[html5lib] implement querySelector/querySelectorAll

pkg/third_party/html5lib/test/selectors/selectors.dart

+/// Test for the Selectors API ported from
+/// <https://github.com/w3c/web-platform-tests/tree/master/selectors-api>
+library html5lib.test.selectors.selectors;
+
+// Bit-mapped flags to indicate which tests the selector is suitable for
+var TEST_QSA_BASELINE     = 0x01; // querySelector() and querySelectorAll() baseline tests
+var TEST_QSA_ADDITIONAL   = 0x02; // querySelector() and querySelectorAll() additional tests
+var TEST_FIND_BASELINE    = 0x04; // find() and findAll() baseline tests, may be unsuitable for querySelector[All]
+var TEST_FIND_ADDITIONAL  = 0x08; // find() and findAll() additional tests, may be unsuitable for querySelector[All]
+var TEST_MATCH_BASELINE   = 0x10; // matches() baseline tests
+var TEST_MATCH_ADDITIONAL = 0x20; // matches() additional tests
+
+
+/*
+ * All of these invalid selectors should result in a SyntaxError being thrown by the APIs.
+ *
+ *   name:     A descriptive name of the selector being tested
+ *   selector: The selector to test
+ */
+var invalidSelectors = [
+  {'name': "Empty String",                 'selector': ""},
+  {'name': "Invalid character",            'selector': "["},
+  {'name': "Invalid character",            'selector': "]"},
+  {'name': "Invalid character",            'selector': "("},
+  {'name': "Invalid character",            'selector': ")"},
+  {'name': "Invalid character",            'selector': "{"},
+  {'name': "Invalid character",            'selector': "}"},
+  {'name': "Invalid character",            'selector': "<"},
+  {'name': "Invalid character",            'selector': ">"},
+  {'name': "Invalid ID",                   'selector': "#"},
+  {'name': "Invalid group of selectors",   'selector': "div,"},
+  {'name': "Invalid class",                'selector': "."},
+  {'name': "Invalid class",                'selector': ".5cm"},
+  {'name': "Invalid class",                'selector': "..test"},
+  {'name': "Invalid class",                'selector': ".foo..quux"},
+  {'name': "Invalid class",                'selector': ".bar."},
+  {'name': "Invalid combinator",           'selector': "div & address, p"},
+  {'name': "Invalid combinator",           'selector': "div >> address, p"},
+  {'name': "Invalid combinator",           'selector': "div ++ address, p"},
+  {'name': "Invalid combinator",           'selector': "div ~~ address, p"},
+  {'name': "Invalid [att=value] selector", 'selector': "[*=test]"},
+  {'name': "Invalid [att=value] selector", 'selector': "[*|*=test]"},
+  {'name': "Invalid [att=value] selector", 'selector': "[class= space unquoted ]"},
+  {'name': "Unknown pseudo-class",         'selector': "div:example"},
+  {'name': "Unknown pseudo-class",         'selector': ":example"},
+  {'name': "Unknown pseudo-element",       'selector': "div::example"},
+  {'name': "Unknown pseudo-element",       'selector': "::example"},
+  {'name': "Invalid pseudo-element",       'selector': ":::before"},
+  {'name': "Undeclared namespace",         'selector': "ns|div"},
+  {'name': "Undeclared namespace",         'selector': ":not(ns|div)"},
+  {'name': "Invalid namespace",            'selector': "^|div"},
+  {'name': "Invalid namespace",            'selector': "\$|div"}
+];
+
+/*
+ * All of these should be valid selectors, expected to match zero or more elements in the document.
+ * None should throw any errors.
+ *
+ *   name:     A descriptive name of the selector being tested
+ *   selector: The selector to test
+ *   'expect':   A list of IDs of the elements expected to be matched. List must be given in tree order.
+ *   'exclude':  An array of contexts to exclude from testing. The valid values are:
+ *             ["document", "element", "fragment", "detached", "html", "xhtml"]
+ *             The "html" and "xhtml" values represent the type of document being queried. These are useful
+ *             for tests that are affected by differences between HTML and XML, such as case sensitivity.
+ *   'level':    An integer indicating the CSS or Selectors level in which the selector being tested was introduced.
+ *   'testType': A bit-mapped flag indicating the type of test.
+ *
+ * Note: Interactive pseudo-classes (:active :hover and :focus) have not been tested in this test suite.
+ */
+var validSelectors = [
+  // Type Selector
+  {'name': "Type selector, matching html element", 'selector': "html", 'expect': ["html"],          'exclude': ["element", "fragment", "detached"], 'level': 1, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Type selector, matching html element", 'selector': "html", 'expect': [] /*no matches*/, 'exclude': ["document"],                        'level': 1, 'testType': TEST_QSA_BASELINE},
+  {'name': "Type selector, matching body element", 'selector': "body", 'expect': ["body"],          'exclude': ["element", "fragment", "detached"], 'level': 1, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Type selector, matching body element", 'selector': "body", 'expect': [] /*no matches*/, 'exclude': ["document"],                        'level': 1, 'testType': TEST_QSA_BASELINE},
+
+  // Universal Selector
+  // Testing "*" for entire an entire context node is handled separately.
+  {'name': "Universal selector, matching all children of element with specified ID",       'selector': "#universal>*",   'expect': ["universal-p1", "universal-hr1", "universal-pre1", "universal-p2", "universal-address1"], 'level': 2, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Universal selector, matching all grandchildren of element with specified ID",  'selector': "#universal>*>*", 'expect': ["universal-code1", "universal-span1", "universal-a1", "universal-code2"],                 'level': 2, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Universal selector, matching all children of empty element with specified ID", 'selector': "#empty>*",       'expect': [] /*no matches*/,                                                                         'level': 2, 'testType': TEST_QSA_BASELINE},
+  {'name': "Universal selector, matching all descendants of element with specified ID",    'selector': "#universal *",   'expect': ["universal-p1", "universal-code1", "universal-hr1", "universal-pre1", "universal-span1", "universal-p2", "universal-a1", "universal-address1", "universal-code2", "universal-a2"], 'level': 2, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+
+  // Attribute Selectors
+  // - presence                  [att]
+  {'name': "Attribute presence selector, matching align attribute with value",                    'selector': ".attr-presence-div1[align]",                             'expect': ["attr-presence-div1"],                                             'level': 2, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Attribute presence selector, matching align attribute with empty value",              'selector': ".attr-presence-div2[align]",                             'expect': ["attr-presence-div2"],                                             'level': 2, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Attribute presence selector, matching title attribute, case insensitivity",           'selector': "#attr-presence [TiTlE]",                                 'expect': ["attr-presence-a1", "attr-presence-span1"], 'exclude': ["xhtml"],    'level': 2, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Attribute presence selector, not matching title attribute, case sensitivity",         'selector': "#attr-presence [TiTlE]",                                 'expect': [],                                          'exclude': ["html"],     'level': 2, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Attribute presence selector, matching custom data-* attribute",                       'selector': "[data-attr-presence]",                                   'expect': ["attr-presence-pre1", "attr-presence-blockquote1"],                'level': 2, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Attribute presence selector, not matching attribute with similar name",               'selector': ".attr-presence-div3[align], .attr-presence-div4[align]", 'expect': [] /*no matches*/,                                                  'level': 2, 'testType': TEST_QSA_BASELINE},
+  {'name': "Attribute presence selector, matching attribute with non-ASCII characters",           'selector': "ul[data-中文]",                                            'expect': ["attr-presence-ul1"],                                              'level': 2, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Attribute presence selector, not matching default option without selected attribute", 'selector': "#attr-presence-select1 option[selected]",                'expect': [] /* no matches */,                                                'level': 2, 'testType': TEST_QSA_BASELINE},
+  {'name': "Attribute presence selector, matching option with selected attribute",                'selector': "#attr-presence-select2 option[selected]",                'expect': ["attr-presence-select2-option4"],                                  'level': 2, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Attribute presence selector, matching multiple options with selected attributes",     'selector': "#attr-presence-select3 option[selected]",                'expect': ["attr-presence-select3-option2", "attr-presence-select3-option3"], 'level': 2, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+
+  // - value                     [att=val]
+  {'name': "Attribute value selector, matching align attribute with value",                                    'selector': "#attr-value [align=\"center\"]",                                     'expect': ["attr-value-div1"], 'level': 2, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Attribute value selector, matching align attribute with empty value",                              'selector': "#attr-value [align=\"\"]",                                           'expect': ["attr-value-div2"], 'level': 2, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Attribute value selector, not matching align attribute with partial value",                        'selector': "#attr-value [align=\"c\"]",                                          'expect': [] /*no matches*/,   'level': 2, 'testType': TEST_QSA_BASELINE},
+  {'name': "Attribute value selector, not matching align attribute with incorrect value",                      'selector': "#attr-value [align=\"centera\"]",                                    'expect': [] /*no matches*/,   'level': 2, 'testType': TEST_QSA_BASELINE},
+  {'name': "Attribute value selector, matching custom data-* attribute with unicode escaped value",            'selector': "[data-attr-value=\"\\e9\"]",                                         'expect': ["attr-value-div3"], 'level': 2, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Attribute value selector, matching custom data-* attribute with escaped character",                'selector': "[data-attr-value\_foo=\"\\e9\"]",                                    'expect': ["attr-value-div4"], 'level': 2, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Attribute value selector with single-quoted value, matching multiple inputs with type attributes", 'selector': "#attr-value input[type='hidden'],#attr-value input[type='radio']",   'expect': ["attr-value-input3", "attr-value-input4", "attr-value-input6", "attr-value-input8", "attr-value-input9"], 'level': 2, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Attribute value selector with double-quoted value, matching multiple inputs with type attributes", 'selector': "#attr-value input[type=\"hidden\"],#attr-value input[type='radio']", 'expect': ["attr-value-input3", "attr-value-input4", "attr-value-input6", "attr-value-input8", "attr-value-input9"], 'level': 2, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Attribute value selector with unquoted value, matching multiple inputs with type attributes",      'selector': "#attr-value input[type=hidden],#attr-value input[type=radio]",       'expect': ["attr-value-input3", "attr-value-input4", "attr-value-input6", "attr-value-input8", "attr-value-input9"], 'level': 2, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Attribute value selector, matching attribute with value using non-ASCII characters",               'selector': "[data-attr-value=中文]",                                               'expect': ["attr-value-div5"], 'level': 2, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+
+  // - whitespace-separated list [att~=val]
+  {'name': "Attribute whitespace-separated list selector, matching class attribute with value",                                  'selector': "#attr-whitespace [class~=\"div1\"]",                                        'expect': ["attr-whitespace-div1"], 'level': 2, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Attribute whitespace-separated list selector, not matching class attribute with empty value",                        'selector': "#attr-whitespace [class~=\"\"]",                                            'expect': [] /*no matches*/ ,       'level': 2, 'testType': TEST_QSA_BASELINE},
+  {'name': "Attribute whitespace-separated list selector, not matching class attribute with partial value",                      'selector': "[data-attr-whitespace~=\"div\"]",                                           'expect': [] /*no matches*/ ,       'level': 2, 'testType': TEST_QSA_BASELINE},
+  {'name': "Attribute whitespace-separated list selector, matching custom data-* attribute with unicode escaped value",          'selector': "[data-attr-whitespace~=\"\\0000e9\"]",                                      'expect': ["attr-whitespace-div4"], 'level': 2, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Attribute whitespace-separated list selector, matching custom data-* attribute with escaped character",              'selector': "[data-attr-whitespace\_foo~=\"\\e9\"]",                                     'expect': ["attr-whitespace-div5"], 'level': 2, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Attribute whitespace-separated list selector with single-quoted value, matching multiple links with rel attributes", 'selector': "#attr-whitespace a[rel~='bookmark'],  #attr-whitespace a[rel~='nofollow']", 'expect': ["attr-whitespace-a1", "attr-whitespace-a2", "attr-whitespace-a3", "attr-whitespace-a5", "attr-whitespace-a7"], 'level': 2, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Attribute whitespace-separated list selector with double-quoted value, matching multiple links with rel attributes", 'selector': "#attr-whitespace a[rel~=\"bookmark\"],#attr-whitespace a[rel~='nofollow']", 'expect': ["attr-whitespace-a1", "attr-whitespace-a2", "attr-whitespace-a3", "attr-whitespace-a5", "attr-whitespace-a7"], 'level': 2, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Attribute whitespace-separated list selector with unquoted value, matching multiple links with rel attributes",      'selector': "#attr-whitespace a[rel~=bookmark],    #attr-whitespace a[rel~=nofollow]",   'expect': ["attr-whitespace-a1", "attr-whitespace-a2", "attr-whitespace-a3", "attr-whitespace-a5", "attr-whitespace-a7"], 'level': 2, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Attribute whitespace-separated list selector with double-quoted value, not matching value with space",               'selector': "#attr-whitespace a[rel~=\"book mark\"]",                                    'expect': [] /* no matches */,      'level': 2, 'testType': TEST_QSA_BASELINE},
+  {'name': "Attribute whitespace-separated list selector, matching title attribute with value using non-ASCII characters",       'selector': "#attr-whitespace [title~=中文]",                                              'expect': ["attr-whitespace-p1"],   'level': 2, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+
+  // - hyphen-separated list     [att|=val]
+  {'name': "Attribute hyphen-separated list selector, not matching unspecified lang attribute",    'selector': "#attr-hyphen-div1[lang|=\"en\"]",    'expect': [] /*no matches*/,    'level': 2, 'testType': TEST_QSA_BASELINE},
+  {'name': "Attribute hyphen-separated list selector, matching lang attribute with exact value",   'selector': "#attr-hyphen-div2[lang|=\"fr\"]",    'expect': ["attr-hyphen-div2"], 'level': 2, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Attribute hyphen-separated list selector, matching lang attribute with partial value", 'selector': "#attr-hyphen-div3[lang|=\"en\"]",    'expect': ["attr-hyphen-div3"], 'level': 2, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Attribute hyphen-separated list selector, not matching incorrect value",               'selector': "#attr-hyphen-div4[lang|=\"es-AR\"]", 'expect': [] /*no matches*/,    'level': 2, 'testType': TEST_QSA_BASELINE},
+
+  // - substring begins-with     [att^=val] (Level 3)
+  {'name': "Attribute begins with selector, matching href attributes beginning with specified substring",                             'selector': "#attr-begins a[href^=\"http://www\"]", 'expect': ["attr-begins-a1", "attr-begins-a3"],     'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+  {'name': "Attribute begins with selector, matching lang attributes beginning with specified substring, ",                           'selector': "#attr-begins [lang^=\"en-\"]",         'expect': ["attr-begins-div2", "attr-begins-div4"], 'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+  {'name': "Attribute begins with selector, not matching class attribute not beginning with specified substring",                     'selector': "#attr-begins [class^=apple]",          'expect': [] /*no matches*/,                        'level': 3, 'testType': TEST_QSA_ADDITIONAL},
+  {'name': "Attribute begins with selector with single-quoted value, matching class attribute beginning with specified substring",    'selector': "#attr-begins [class^=' apple']",       'expect': ["attr-begins-p1"],                       'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+  {'name': "Attribute begins with selector with double-quoted value, matching class attribute beginning with specified substring",    'selector': "#attr-begins [class^=\" apple\"]",     'expect': ["attr-begins-p1"],                       'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+  {'name': "Attribute begins with selector with unquoted value, not matching class attribute not beginning with specified substring", 'selector': "#attr-begins [class^= apple]",         'expect': [] /*no matches*/,                        'level': 3, 'testType': TEST_QSA_ADDITIONAL},
+
+  // - substring ends-with       [att\$=val] (Level 3)
+  {'name': "Attribute ends with selector, matching href attributes ending with specified substring",                             'selector': "#attr-ends a[href\$=\".org\"]",   'expect': ["attr-ends-a1", "attr-ends-a3"],     'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+  {'name': "Attribute ends with selector, matching lang attributes ending with specified substring, ",                           'selector': "#attr-ends [lang\$=\"-CH\"]",     'expect': ["attr-ends-div2", "attr-ends-div4"], 'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+  {'name': "Attribute ends with selector, not matching class attribute not ending with specified substring",                     'selector': "#attr-ends [class\$=apple]",      'expect': [] /*no matches*/,                    'level': 3, 'testType': TEST_QSA_ADDITIONAL},
+  {'name': "Attribute ends with selector with single-quoted value, matching class attribute ending with specified substring",    'selector': "#attr-ends [class\$='apple ']",   'expect': ["attr-ends-p1"],                     'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+  {'name': "Attribute ends with selector with double-quoted value, matching class attribute ending with specified substring",    'selector': "#attr-ends [class\$=\"apple \"]", 'expect': ["attr-ends-p1"],                     'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+  {'name': "Attribute ends with selector with unquoted value, not matching class attribute not ending with specified substring", 'selector': "#attr-ends [class\$=apple ]",     'expect': [] /*no matches*/,                    'level': 3, 'testType': TEST_QSA_ADDITIONAL},
+
+  // - substring contains        [att*=val] (Level 3)
+  {'name': "Attribute contains selector, matching href attributes beginning with specified substring",                          'selector': "#attr-contains a[href*=\"http://www\"]",     'expect': ["attr-contains-a1", "attr-contains-a3"],     'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+  {'name': "Attribute contains selector, matching href attributes ending with specified substring",                             'selector': "#attr-contains a[href*=\".org\"]",           'expect': ["attr-contains-a1", "attr-contains-a2"],     'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+  {'name': "Attribute contains selector, matching href attributes containing specified substring",                              'selector': "#attr-contains a[href*=\".example.\"]",      'expect': ["attr-contains-a1", "attr-contains-a3"],     'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+  {'name': "Attribute contains selector, matching lang attributes beginning with specified substring, ",                        'selector': "#attr-contains [lang*=\"en-\"]",             'expect': ["attr-contains-div2", "attr-contains-div6"], 'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+  {'name': "Attribute contains selector, matching lang attributes ending with specified substring, ",                           'selector': "#attr-contains [lang*=\"-CH\"]",             'expect': ["attr-contains-div3", "attr-contains-div5"], 'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+  {'name': "Attribute contains selector with single-quoted value, matching class attribute beginning with specified substring", 'selector': "#attr-contains [class*=' apple']",           'expect': ["attr-contains-p1"],                         'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+  {'name': "Attribute contains selector with single-quoted value, matching class attribute ending with specified substring",    'selector': "#attr-contains [class*='orange ']",          'expect': ["attr-contains-p1"],                         'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+  {'name': "Attribute contains selector with single-quoted value, matching class attribute containing specified substring",     'selector': "#attr-contains [class*='ple banana ora']",   'expect': ["attr-contains-p1"],                         'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+  {'name': "Attribute contains selector with double-quoted value, matching class attribute beginning with specified substring", 'selector': "#attr-contains [class*=\" apple\"]",         'expect': ["attr-contains-p1"],                         'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+  {'name': "Attribute contains selector with double-quoted value, matching class attribute ending with specified substring",    'selector': "#attr-contains [class*=\"orange \"]",        'expect': ["attr-contains-p1"],                         'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+  {'name': "Attribute contains selector with double-quoted value, matching class attribute containing specified substring",     'selector': "#attr-contains [class*=\"ple banana ora\"]", 'expect': ["attr-contains-p1"],                         'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+  {'name': "Attribute contains selector with unquoted value, matching class attribute beginning with specified substring",      'selector': "#attr-contains [class*= apple]",             'expect': ["attr-contains-p1"],                         'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+  {'name': "Attribute contains selector with unquoted value, matching class attribute ending with specified substring",         'selector': "#attr-contains [class*=orange ]",            'expect': ["attr-contains-p1"],                         'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+  {'name': "Attribute contains selector with unquoted value, matching class attribute containing specified substring",          'selector': "#attr-contains [class*= banana ]",           'expect': ["attr-contains-p1"],                         'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+
+  // Pseudo-classes
+  // - :root                 (Level 3)
+  {'name': ":root pseudo-class selector, matching document root element",      'selector': ":root", 'expect': ["html"],          'exclude': ["element", "fragment", "detached"], 'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+  {'name': ":root pseudo-class selector, not matching document root element",  'selector': ":root", 'expect': [] /*no matches*/, 'exclude': ["document"],                        'level': 3, 'testType': TEST_QSA_ADDITIONAL},
+
+  // - :nth-child(n)         (Level 3)
+  {'name': ":nth-child selector, matching the third child element",                              'selector': "#pseudo-nth-table1 :nth-child(3)", 'expect': ["pseudo-nth-td3", "pseudo-nth-td9", "pseudo-nth-tr3", "pseudo-nth-td15"],                    'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+  {'name': ":nth-child selector, matching every third child element",                            'selector': "#pseudo-nth li:nth-child(3n)",     'expect': ["pseudo-nth-li3", "pseudo-nth-li6", "pseudo-nth-li9", "pseudo-nth-li12"],                    'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+  {'name': ":nth-child selector, matching every second child element, starting from the fourth", 'selector': "#pseudo-nth li:nth-child(2n+4)",   'expect': ["pseudo-nth-li4", "pseudo-nth-li6", "pseudo-nth-li8", "pseudo-nth-li10", "pseudo-nth-li12"], 'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+  {'name': ":nth-child selector, matching every fourth child element, starting from the third",  'selector': "#pseudo-nth-p1 :nth-child(4n-1)",  'expect': ["pseudo-nth-em2", "pseudo-nth-span3"],                                                       'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+
+  // - :nth-last-child       (Level 3)
+  {'name': ":nth-last-child selector, matching the third last child element",                                           'selector': "#pseudo-nth-table1 :nth-last-child(3)", 'expect': ["pseudo-nth-tr1", "pseudo-nth-td4", "pseudo-nth-td10", "pseudo-nth-td16"],                 'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+  {'name': ":nth-last-child selector, matching every third child element from the end",                                 'selector': "#pseudo-nth li:nth-last-child(3n)",     'expect': ["pseudo-nth-li1", "pseudo-nth-li4", "pseudo-nth-li7", "pseudo-nth-li10"],                  'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+  {'name': ":nth-last-child selector, matching every second child element from the end, starting from the fourth last", 'selector': "#pseudo-nth li:nth-last-child(2n+4)",   'expect': ["pseudo-nth-li1", "pseudo-nth-li3", "pseudo-nth-li5", "pseudo-nth-li7", "pseudo-nth-li9"], 'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+  {'name': ":nth-last-child selector, matching every fourth element from the end, starting from the third last",        'selector': "#pseudo-nth-p1 :nth-last-child(4n-1)",  'expect': ["pseudo-nth-span2", "pseudo-nth-span4"],                                                   'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+
+  // - :nth-of-type(n)       (Level 3)
+  {'name': ":nth-of-type selector, matching the third em element",                                        'selector': "#pseudo-nth-p1 em:nth-of-type(3)",      'expect': ["pseudo-nth-em3"],                                                                                 'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+  {'name': ":nth-of-type selector, matching every second element of their type",                          'selector': "#pseudo-nth-p1 :nth-of-type(2n)",       'expect': ["pseudo-nth-em2", "pseudo-nth-span2", "pseudo-nth-span4", "pseudo-nth-strong2", "pseudo-nth-em4"], 'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+  {'name': ":nth-of-type selector, matching every second elemetn of their type, starting from the first", 'selector': "#pseudo-nth-p1 span:nth-of-type(2n-1)", 'expect': ["pseudo-nth-span1", "pseudo-nth-span3"],                                                           'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+
+  // - :nth-last-of-type(n)  (Level 3)
+  {'name': ":nth-last-of-type selector, matching the thrid last em element", 'selector': "#pseudo-nth-p1 em:nth-last-of-type(3)",      'expect': ["pseudo-nth-em2"],                                                                                 'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+  {'name': ":nth-last-of-type selector, matching every second last element of their type", 'selector': "#pseudo-nth-p1 :nth-last-of-type(2n)",       'expect': ["pseudo-nth-span1", "pseudo-nth-em1", "pseudo-nth-strong1", "pseudo-nth-em3", "pseudo-nth-span3"], 'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+  {'name': ":nth-last-of-type selector, matching every second last element of their type, starting from the last", 'selector': "#pseudo-nth-p1 span:nth-last-of-type(2n-1)", 'expect': ["pseudo-nth-span2", "pseudo-nth-span4"],                                                           'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+
+  // - :first-of-type        (Level 3)
+  {'name': ":first-of-type selector, matching the first em element", 'selector': "#pseudo-nth-p1 em:first-of-type",      'expect': ["pseudo-nth-em1"],                                           'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+  {'name': ":first-of-type selector, matching the first of every type of element", 'selector': "#pseudo-nth-p1 :first-of-type",        'expect': ["pseudo-nth-span1", "pseudo-nth-em1", "pseudo-nth-strong1"], 'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+  {'name': ":first-of-type selector, matching the first td element in each table row", 'selector': "#pseudo-nth-table1 tr :first-of-type", 'expect': ["pseudo-nth-td1", "pseudo-nth-td7", "pseudo-nth-td13"],      'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+
+  // - :last-of-type         (Level 3)
+  {'name': ":last-of-type selector, matching the last em elemnet", 'selector': "#pseudo-nth-p1 em:last-of-type",      'expect': ["pseudo-nth-em4"],                                           'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+  {'name': ":last-of-type selector, matching the last of every type of element", 'selector': "#pseudo-nth-p1 :last-of-type",        'expect': ["pseudo-nth-span4", "pseudo-nth-strong2", "pseudo-nth-em4"], 'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+  {'name': ":last-of-type selector, matching the last td element in each table row", 'selector': "#pseudo-nth-table1 tr :last-of-type", 'expect': ["pseudo-nth-td6", "pseudo-nth-td12", "pseudo-nth-td18"],     'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+
+  // - :first-child
+  {'name': ":first-child pseudo-class selector, matching first child div element",          'selector': "#pseudo-first-child div:first-child",                                        'expect': ["pseudo-first-child-div1"],                                                          'level': 2, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': ":first-child pseudo-class selector, doesn't match non-first-child elements",    'selector': ".pseudo-first-child-div2:first-child, .pseudo-first-child-div3:first-child", 'expect': [] /*no matches*/,                                                                    'level': 2, 'testType': TEST_QSA_BASELINE},
+  {'name': ":first-child pseudo-class selector, matching first-child of multiple elements", 'selector': "#pseudo-first-child span:first-child",                                       'expect': ["pseudo-first-child-span1", "pseudo-first-child-span3", "pseudo-first-child-span5"], 'level': 2, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+
+  // - :last-child           (Level 3)
+  {'name': ":last-child pseudo-class selector, matching last child div element",           'selector': "#pseudo-last-child div:last-child",                                       'expect': ["pseudo-last-child-div3"],                                                        'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+  {'name': ":last-child pseudo-class selector, doesn't match non-last-child elements",     'selector': ".pseudo-last-child-div1:last-child, .pseudo-last-child-div2:first-child", 'expect': [] /*no matches*/,                                                                 'level': 3, 'testType': TEST_QSA_ADDITIONAL},
+  {'name': ":last-child pseudo-class selector, matching first-child of multiple elements", 'selector': "#pseudo-last-child span:last-child",                                      'expect': ["pseudo-last-child-span2", "pseudo-last-child-span4", "pseudo-last-child-span6"], 'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+
+  // - :only-child           (Level 3)
+  {'name': ":pseudo-only-child pseudo-class selector, matching all only-child elements", 'selector': "#pseudo-only :only-child", 'expect': ["pseudo-only-span1"], 'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+  {'name': ":pseudo-only-child pseudo-class selector, matching only-child em elements",  'selector': "#pseudo-only em:only-child", 'expect': [] /*no matches*/,   'level': 3, 'testType': TEST_QSA_ADDITIONAL},
+
+  // - :only-of-type         (Level 3)
+  {'name': ":pseudo-only-of-type pseudo-class selector, matching all elements with no siblings of the same type", 'selector': "#pseudo-only :only-of-type", 'expect': ["pseudo-only-span1", "pseudo-only-em1"], 'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+  {'name': ":pseudo-only-of-type pseudo-class selector, matching em elements with no siblings of the same type",  'selector': "#pseudo-only em:only-of-type", 'expect': ["pseudo-only-em1"],                    'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+
+  // - :empty                (Level 3)
+  {'name': ":empty pseudo-class selector, matching empty p elements",   'selector': "#pseudo-empty p:empty", 'expect': ["pseudo-empty-p1", "pseudo-empty-p2"],                       'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+  {'name': ":empty pseudo-class selector, matching all empty elements", 'selector': "#pseudo-empty :empty",  'expect': ["pseudo-empty-p1", "pseudo-empty-p2", "pseudo-empty-span1"], 'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+
+  // - :link and :visited
+  // Implementations may treat all visited links as unvisited, so these cannot be tested separately.
+  // The only guarantee is that ":link,:visited" matches the set of all visited and unvisited links and that they are individually mutually exclusive sets.
+  {'name': ":link and :visited pseudo-class selectors, matching a and area elements with href attributes",        'selector': "#pseudo-link :link, #pseudo-link :visited", 'expect': ["pseudo-link-a1", "pseudo-link-a2", "pseudo-link-area1"],                                'level': 1, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': ":link and :visited pseudo-class selectors, matching link elements with href attributes",              'selector': "#head :link, #head :visited",               'expect': ["pseudo-link-link1", "pseudo-link-link2"], 'exclude': ["element", "fragment", "detached"], 'level': 1, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': ":link and :visited pseudo-class selectors, not matching link elements with href attributes",          'selector': "#head :link, #head :visited",               'expect': [] /*no matches*/,                          'exclude': ["document"],                        'level': 1, 'testType': TEST_QSA_BASELINE},
+  {'name': ":link and :visited pseudo-class selectors, chained, mutually exclusive pseudo-classes match nothing", 'selector': ":link:visited",                             'expect': [] /*no matches*/,                          'exclude': ["document"],                        'level': 1, 'testType': TEST_QSA_BASELINE},
+
+  // - :target               (Level 3)
+  {'name': ":target pseudo-class selector, matching the element referenced by the URL fragment identifier", 'selector': ":target", 'expect': [] /*no matches*/, 'exclude': ["document", "element"],  'level': 3, 'testType': TEST_QSA_ADDITIONAL},
+  {'name': ":target pseudo-class selector, matching the element referenced by the URL fragment identifier", 'selector': ":target", 'expect': ["target"],        'exclude': ["fragment", "detached"], 'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+
+  // - :lang()
+  {'name': ":lang pseudo-class selector, matching inherited language",                     'selector': "#pseudo-lang-div1:lang(en)",    'expect': ["pseudo-lang-div1"], 'exclude': ["detached", "fragment"], 'level': 2, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': ":lang pseudo-class selector, not matching element with no inherited language", 'selector': "#pseudo-lang-div1:lang(en)",    'expect': [] /*no matches*/,    'exclude': ["document", "element"],  'level': 2, 'testType': TEST_QSA_BASELINE},
+  {'name': ":lang pseudo-class selector, matching specified language with exact value",    'selector': "#pseudo-lang-div2:lang(fr)",    'expect': ["pseudo-lang-div2"],                                    'level': 2, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': ":lang pseudo-class selector, matching specified language with partial value",  'selector': "#pseudo-lang-div3:lang(en)",    'expect': ["pseudo-lang-div3"],                                    'level': 2, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': ":lang pseudo-class selector, not matching incorrect language",                 'selector': "#pseudo-lang-div4:lang(es-AR)", 'expect': [] /*no matches*/,                                       'level': 2, 'testType': TEST_QSA_BASELINE},
+
+  // - :enabled              (Level 3)
+  {'name': ":enabled pseudo-class selector, matching all enabled form controls",  'selector': "#pseudo-ui :enabled",  'expect': ["pseudo-ui-input1", "pseudo-ui-input2", "pseudo-ui-input3", "pseudo-ui-input4", "pseudo-ui-input5", "pseudo-ui-input6",
+                                                                                                                           "pseudo-ui-input7", "pseudo-ui-input8", "pseudo-ui-input9", "pseudo-ui-textarea1", "pseudo-ui-button1"],    'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+
+  // - :disabled             (Level 3)
+  {'name': ":enabled pseudo-class selector, matching all disabled form controls", 'selector': "#pseudo-ui :disabled", 'expect': ["pseudo-ui-input10", "pseudo-ui-input11", "pseudo-ui-input12", "pseudo-ui-input13", "pseudo-ui-input14", "pseudo-ui-input15",
+                                                                                                                           "pseudo-ui-input16", "pseudo-ui-input17", "pseudo-ui-input18", "pseudo-ui-textarea2", "pseudo-ui-button2"], 'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+
+  // - :checked              (Level 3)
+  {'name': ":checked pseudo-class selector, matching checked radio buttons and checkboxes", 'selector': "#pseudo-ui :checked", 'expect': ["pseudo-ui-input4", "pseudo-ui-input6", "pseudo-ui-input13", "pseudo-ui-input15"],  'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+
+  // - :not(s)               (Level 3)
+  {'name': ":not pseudo-class selector, matching ", 'selector': "#not>:not(div)",   'expect': ["not-p1", "not-p2", "not-p3"], 'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+  {'name': ":not pseudo-class selector, matching ", 'selector': "#not * :not(:first-child)",   'expect': ["not-em1", "not-em2", "not-em3"], 'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+  {'name': ":not pseudo-class selector, matching nothing", 'selector': ":not(*)",   'expect': [] /* no matches */, 'level': 3, 'testType': TEST_QSA_ADDITIONAL},
+  {'name': ":not pseudo-class selector, matching nothing", 'selector': ":not(*|*)", 'expect': [] /* no matches */, 'level': 3, 'testType': TEST_QSA_ADDITIONAL},
+
+  // Pseudo-elements
+  // - ::first-line
+  {'name': ":first-line pseudo-element (one-colon syntax) selector, not matching any elements",    'selector': "#pseudo-element:first-line",    'expect': [] /*no matches*/, 'level': 2, 'testType': TEST_QSA_BASELINE},
+  {'name': "::first-line pseudo-element (two-colon syntax) selector, not matching any elements",   'selector': "#pseudo-element::first-line",   'expect': [] /*no matches*/, 'level': 3, 'testType': TEST_QSA_ADDITIONAL},
+
+  // - ::first-letter
+  {'name': ":first-letter pseudo-element (one-colon syntax) selector, not matching any elements",  'selector': "#pseudo-element:first-letter",  'expect': [] /*no matches*/, 'level': 2, 'testType': TEST_QSA_BASELINE},
+  {'name': "::first-letter pseudo-element (two-colon syntax) selector, not matching any elements", 'selector': "#pseudo-element::first-letter", 'expect': [] /*no matches*/, 'level': 3, 'testType': TEST_QSA_ADDITIONAL},
+
+  // - ::before
+  {'name': ":before pseudo-element (one-colon syntax) selector, not matching any elements",        'selector': "#pseudo-element:before",        'expect': [] /*no matches*/, 'level': 2, 'testType': TEST_QSA_BASELINE},
+  {'name': "::before pseudo-element (two-colon syntax) selector, not matching any elements",       'selector': "#pseudo-element::before",       'expect': [] /*no matches*/, 'level': 3, 'testType': TEST_QSA_ADDITIONAL},
+
+  // - ::after
+  {'name': ":after pseudo-element (one-colon syntax) selector, not matching any elements",         'selector': "#pseudo-element:after",         'expect': [] /*no matches*/, 'level': 2, 'testType': TEST_QSA_BASELINE},
+  {'name': "::after pseudo-element (two-colon syntax) selector, not matching any elements",        'selector': "#pseudo-element::after",        'expect': [] /*no matches*/, 'level': 3, 'testType': TEST_QSA_ADDITIONAL},
+
+  // Class Selectors
+  {'name': "Class selector, matching element with specified class",                                           'selector': ".class-p",                'expect': ["class-p1","class-p2", "class-p3"],                                              'level': 1, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Class selector, chained, matching only elements with all specified classes",                      'selector': "#class .apple.orange.banana",    'expect': ["class-div1", "class-div2", "class-p4", "class-div3", "class-p6", "class-div4"], 'level': 1, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Class Selector, chained, with type selector",                                                     'selector': "div.apple.banana.orange", 'expect': ["class-div1", "class-div2", "class-div3", "class-div4"],                         'level': 1, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  // Caution: If copying and pasting the folowing non-ASCII classes, ensure unicode normalisation is not performed in the process.
+  {'name': "Class selector, matching element with class value using non-ASCII characters",                    'selector': ".台北Táiběi",             'expect': ["class-span1"],               'level': 1, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Class selector, matching multiple elements with class value using non-ASCII characters",          'selector': ".台北",                     'expect': ["class-span1","class-span2"], 'level': 1, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Class selector, chained, matching element with multiple class values using non-ASCII characters", 'selector': ".台北Táiběi.台北",          'expect': ["class-span1"],               'level': 1, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Class selector, matching element with class with escaped character",                              'selector': ".foo\\:bar",              'expect': ["class-span3"],               'level': 1, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Class selector, matching element with class with escaped character",                              'selector': ".test\\.foo\\[5\\]bar",   'expect': ["class-span4"],               'level': 1, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+
+  // ID Selectors
+  {'name': "ID selector, matching element with specified id",           'selector': "#id #id-div1",              'expect': ["id-div1"],            'level': 1, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "ID selector, chained, matching element with specified id",  'selector': "#id-div1, #id-div1",        'expect': ["id-div1"],            'level': 1, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "ID selector, chained, matching element with specified id",  'selector': "#id-div1, #id-div2",        'expect': ["id-div1", "id-div2"], 'level': 1, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "ID Selector, chained, with type selector",                  'selector': "div#id-div1, div#id-div2",  'expect': ["id-div1", "id-div2"], 'level': 1, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "ID selector, not matching non-existent descendant",         'selector': "#id #none",                 'expect': [] /*no matches*/,      'level': 1, 'testType': TEST_QSA_BASELINE},
+  {'name': "ID selector, not matching non-existent ancestor",           'selector': "#none #id-div1",            'expect': [] /*no matches*/,      'level': 1, 'testType': TEST_QSA_BASELINE},
+  {'name': "ID selector, matching multiple elements with duplicate id", 'selector': "#id-li-duplicate",          'expect': ["id-li-duplicate", "id-li-duplicate", "id-li-duplicate", "id-li-duplicate"], 'level': 1, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+
+  // Caution: If copying and pasting the folowing non-ASCII IDs, ensure unicode normalisation is not performed in the process.
+  {'name': "ID selector, matching id value using non-ASCII characters",    'selector': "#台北Táiběi",           'expect': ["台北Táiběi"],       'level': 1, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "ID selector, matching id value using non-ASCII characters",    'selector': "#台北",                   'expect': ["台北"],               'level': 1, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "ID selector, matching id values using non-ASCII characters",   'selector': "#台北Táiběi, #台北",      'expect': ["台北Táiběi", "台北"], 'level': 1, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+
+  // XXX runMatchesTest() in level2-lib.js can't handle this because obtaining the expected nodes requires escaping characters when generating the selector from 'expect' values
+  {'name': "ID selector, matching element with id with escaped character", 'selector': "#\\#foo\\:bar",         'expect': ["#foo:bar"],         'level': 1, 'testType': TEST_QSA_BASELINE},
+  {'name': "ID selector, matching element with id with escaped character", 'selector': "#test\\.foo\\[5\\]bar", 'expect': ["test.foo[5]bar"],   'level': 1, 'testType': TEST_QSA_BASELINE},
+
+  // Namespaces
+  // XXX runMatchesTest() in level2-lib.js can't handle these because non-HTML elements don't have a recognised id
+  {'name': "Namespace selector, matching element with any namespace",        'selector': "#any-namespace *|div", 'expect': ["any-namespace-div1", "any-namespace-div2", "any-namespace-div3", "any-namespace-div4"], 'level': 3, 'testType': TEST_QSA_BASELINE},
+  {'name': "Namespace selector, matching div elements in no namespace only", 'selector': "#no-namespace |div",   'expect': ["no-namespace-div3"], 'level': 3, 'testType': TEST_QSA_BASELINE},
+  {'name': "Namespace selector, matching any elements in no namespace only", 'selector': "#no-namespace |*",     'expect': ["no-namespace-div3"], 'level': 3, 'testType': TEST_QSA_BASELINE},
+
+  // Combinators
+  // - Descendant combinator ' '
+  {'name': "Descendant combinator, matching element that is a descendant of an element with id",                 'selector': "#descendant div",                   'expect': ["descendant-div1", "descendant-div2", "descendant-div3", "descendant-div4"], 'level': 1, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Descendant combinator, matching element with id that is a descendant of an element",                 'selector': "body #descendant-div1",             'expect': ["descendant-div1"], 'exclude': ["detached", "fragment"], 'level': 1, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Descendant combinator, matching element with id that is a descendant of an element",                 'selector': "div #descendant-div1",              'expect': ["descendant-div1"],                                    'level': 1, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Descendant combinator, matching element with id that is a descendant of an element with id",         'selector': "#descendant #descendant-div2",      'expect': ["descendant-div2"],                                    'level': 1, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Descendant combinator, matching element with class that is a descendant of an element with id",      'selector': "#descendant .descendant-div2",      'expect': ["descendant-div2"],                                    'level': 1, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Descendant combinator, matching element with class that is a descendant of an element with class",   'selector': ".descendant-div1 .descendant-div3", 'expect': ["descendant-div3"],                                    'level': 1, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Descendant combinator, not matching element with id that is not a descendant of an element with id", 'selector': "#descendant-div1 #descendant-div4", 'expect': [] /*no matches*/,                                      'level': 1, 'testType': TEST_QSA_BASELINE},
+  {'name': "Descendant combinator, whitespace characters",                                                       'selector': "#descendant\t\r\n#descendant-div2", 'expect': ["descendant-div2"],                                    'level': 1, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+
+  // - Child combinator '>'
+  {'name': "Child combinator, matching element that is a child of an element with id",                       'selector': "#child>div",                          'expect': ["child-div1", "child-div4"], 'level': 2, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Child combinator, matching element with id that is a child of an element",                       'selector': "div>#child-div1",                     'expect': ["child-div1"],               'level': 2, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Child combinator, matching element with id that is a child of an element with id",               'selector': "#child>#child-div1",                  'expect': ["child-div1"],               'level': 2, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Child combinator, matching element with id that is a child of an element with class",            'selector': "#child-div1>.child-div2",             'expect': ["child-div2"],               'level': 2, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Child combinator, matching element with class that is a child of an element with class",         'selector': ".child-div1>.child-div2",             'expect': ["child-div2"],               'level': 2, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Child combinator, not matching element with id that is not a child of an element with id",       'selector': "#child>#child-div3",                  'expect': [] /*no matches*/,            'level': 2, 'testType': TEST_QSA_BASELINE},
+  {'name': "Child combinator, not matching element with id that is not a child of an element with class",    'selector': "#child-div1>.child-div3",             'expect': [] /*no matches*/,            'level': 2, 'testType': TEST_QSA_BASELINE},
+  {'name': "Child combinator, not matching element with class that is not a child of an element with class", 'selector': ".child-div1>.child-div3",             'expect': [] /*no matches*/,            'level': 2, 'testType': TEST_QSA_BASELINE},
+  {'name': "Child combinator, surrounded by whitespace",                                                     'selector': "#child-div1\t\r\n>\t\r\n#child-div2", 'expect': ["child-div2"],               'level': 2, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Child combinator, whitespace after",                                                             'selector': "#child-div1>\t\r\n#child-div2",       'expect': ["child-div2"],               'level': 2, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Child combinator, whitespace before",                                                            'selector': "#child-div1\t\r\n>#child-div2",       'expect': ["child-div2"],               'level': 2, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Child combinator, no whitespace",                                                                'selector': "#child-div1>#child-div2",             'expect': ["child-div2"],               'level': 2, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+
+  // - Adjacent sibling combinator '+'
+  {'name': "Adjacent sibling combinator, matching element that is an adjacent sibling of an element with id",                 'selector': "#adjacent-div2+div",                                         'expect': ["adjacent-div4"], 'level': 2, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Adjacent sibling combinator, matching element with id that is an adjacent sibling of an element",                 'selector': "div+#adjacent-div4",                                         'expect': ["adjacent-div4"], 'level': 2, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Adjacent sibling combinator, matching element with id that is an adjacent sibling of an element with id",         'selector': "#adjacent-div2+#adjacent-div4",                              'expect': ["adjacent-div4"], 'level': 2, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Adjacent sibling combinator, matching element with class that is an adjacent sibling of an element with id",      'selector': "#adjacent-div2+.adjacent-div4",                              'expect': ["adjacent-div4"], 'level': 2, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Adjacent sibling combinator, matching element with class that is an adjacent sibling of an element with class",   'selector': ".adjacent-div2+.adjacent-div4",                              'expect': ["adjacent-div4"], 'level': 2, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Adjacent sibling combinator, matching p element that is an adjacent sibling of a div element",                    'selector': "#adjacent div+p",                                            'expect': ["adjacent-p2"],   'level': 2, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Adjacent sibling combinator, not matching element with id that is not an adjacent sibling of an element with id", 'selector': "#adjacent-div2+#adjacent-p2, #adjacent-div2+#adjacent-div1", 'expect': [] /*no matches*/, 'level': 2, 'testType': TEST_QSA_BASELINE},
+  {'name': "Adjacent sibling combinator, surrounded by whitespace",                                                           'selector': "#adjacent-p2\t\r\n+\t\r\n#adjacent-p3",                      'expect': ["adjacent-p3"],   'level': 2, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Adjacent sibling combinator, whitespace after",                                                                   'selector': "#adjacent-p2+\t\r\n#adjacent-p3",                            'expect': ["adjacent-p3"],   'level': 2, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Adjacent sibling combinator, whitespace before",                                                                  'selector': "#adjacent-p2\t\r\n+#adjacent-p3",                            'expect': ["adjacent-p3"],   'level': 2, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Adjacent sibling combinator, no whitespace",                                                                      'selector': "#adjacent-p2+#adjacent-p3",                                  'expect': ["adjacent-p3"],   'level': 2, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+
+  // - General sibling combinator ~ (Level 3)
+  {'name': "General sibling combinator, matching element that is a sibling of an element with id",                    'selector': "#sibling-div2~div",                                        'expect': ["sibling-div4", "sibling-div6"], 'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+  {'name': "General sibling combinator, matching element with id that is a sibling of an element",                    'selector': "div~#sibling-div4",                                        'expect': ["sibling-div4"],                 'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+  {'name': "General sibling combinator, matching element with id that is a sibling of an element with id",            'selector': "#sibling-div2~#sibling-div4",                              'expect': ["sibling-div4"],                 'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+  {'name': "General sibling combinator, matching element with class that is a sibling of an element with id",         'selector': "#sibling-div2~.sibling-div",                               'expect': ["sibling-div4", "sibling-div6"],                 'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+  {'name': "General sibling combinator, matching p element that is a sibling of a div element",                       'selector': "#sibling div~p",                                           'expect': ["sibling-p2", "sibling-p3"],                   'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+  {'name': "General sibling combinator, not matching element with id that is not a sibling after a p element",        'selector': "#sibling>p~div",                                           'expect': [] /*no matches*/,                'level': 3, 'testType': TEST_QSA_ADDITIONAL},
+  {'name': "General sibling combinator, not matching element with id that is not a sibling after an element with id", 'selector': "#sibling-div2~#sibling-div3, #sibling-div2~#sibling-div1", 'expect': [] /*no matches*/,                'level': 3, 'testType': TEST_QSA_ADDITIONAL},
+  {'name': "General sibling combinator, surrounded by whitespace",                                                    'selector': "#sibling-p2\t\r\n~\t\r\n#sibling-p3",                      'expect': ["sibling-p3"],                   'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+  {'name': "General sibling combinator, whitespace after",                                                            'selector': "#sibling-p2~\t\r\n#sibling-p3",                            'expect': ["sibling-p3"],                   'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+  {'name': "General sibling combinator, whitespace before",                                                           'selector': "#sibling-p2\t\r\n~#sibling-p3",                            'expect': ["sibling-p3"],                   'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+  {'name': "General sibling combinator, no whitespace",                                                               'selector': "#sibling-p2~#sibling-p3",                                  'expect': ["sibling-p3"],                   'level': 3, 'testType': TEST_QSA_ADDITIONAL | TEST_MATCH_BASELINE},
+
+  // Group of selectors (comma)
+  {'name': "Syntax, group of selectors separator, surrounded by whitespace", 'selector': "#group em\t\r \n,\t\r \n#group strong", 'expect': ["group-em1", "group-strong1"], 'level': 1, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Syntax, group of selectors separator, whitespace after",         'selector': "#group em,\t\r\n#group strong",         'expect': ["group-em1", "group-strong1"], 'level': 1, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Syntax, group of selectors separator, whitespace before",        'selector': "#group em\t\r\n,#group strong",         'expect': ["group-em1", "group-strong1"], 'level': 1, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+  {'name': "Syntax, group of selectors separator, no whitespace",            'selector': "#group em,#group strong",               'expect': ["group-em1", "group-strong1"], 'level': 1, 'testType': TEST_QSA_BASELINE | TEST_MATCH_BASELINE},
+];