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Unified Diff: packages/html/test/parser_feature_test.dart

Issue 1400473008: Roll Observatory packages and add a roll script (Closed) Base URL: git@github.com:dart-lang/observatory_pub_packages.git@master
Patch Set: Created 5 years, 2 months ago
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Index: packages/html/test/parser_feature_test.dart
diff --git a/packages/html/test/parser_feature_test.dart b/packages/html/test/parser_feature_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..54d68a945845ac4d4d03f87f991fc5c713ad3d79
--- /dev/null
+++ b/packages/html/test/parser_feature_test.dart
@@ -0,0 +1,476 @@
+/// Additional feature tests that aren't based on test data.
+library parser_feature_test;
+
+import 'package:unittest/unittest.dart';
+import 'package:html/dom.dart';
+import 'package:html/parser.dart';
+import 'package:html/src/constants.dart';
+import 'package:html/src/encoding_parser.dart';
+import 'package:html/src/treebuilder.dart';
+import 'package:source_span/source_span.dart';
+
+main() {
+ _testElementSpans();
+ test('doctype is cloneable', () {
+ var doc = parse('<!doctype HTML>');
+ DocumentType doctype = doc.nodes[0];
+ expect(doctype.clone(false).toString(), '<!DOCTYPE html>');
+ });
+
+ test('line counter', () {
+ // http://groups.google.com/group/html5lib-discuss/browse_frm/thread/f4f00e4a2f26d5c0
+ var doc = parse("<pre>\nx\n&gt;\n</pre>");
+ expect(doc.body.innerHtml, "<pre>x\n&gt;\n</pre>");
+ });
+
+ test('namespace html elements on', () {
+ var doc = new HtmlParser('', tree: new TreeBuilder(true)).parse();
+ expect(doc.nodes[0].namespaceUri, Namespaces.html);
+ });
+
+ test('namespace html elements off', () {
+ var doc = new HtmlParser('', tree: new TreeBuilder(false)).parse();
+ expect(doc.nodes[0].namespaceUri, null);
+ });
+
+ test('parse error spans - full', () {
+ var parser = new HtmlParser('''
+<!DOCTYPE html>
+<html>
+ <body>
+ <!DOCTYPE html>
+ </body>
+</html>
+''', generateSpans: true, sourceUrl: 'ParseError');
+ var doc = parser.parse();
+ expect(doc.body.outerHtml, '<body>\n \n \n\n</body>');
+ expect(parser.errors.length, 1);
+ ParseError error = parser.errors[0];
+ expect(error.errorCode, 'unexpected-doctype');
+
+ // Note: these values are 0-based, but the printed format is 1-based.
+ expect(error.span.start.line, 3);
+ expect(error.span.end.line, 3);
+ expect(error.span.start.column, 2);
+ expect(error.span.end.column, 17);
+ expect(error.span.text, '<!DOCTYPE html>');
+
+ expect(error.toString(), '''
+On line 4, column 3 of ParseError: Unexpected DOCTYPE. Ignored.
+ <!DOCTYPE html>
+ ^^^^^^^^^^^^^^^''');
+ });
+
+ test('parse error spans - minimal', () {
+ var parser = new HtmlParser('''
+<!DOCTYPE html>
+<html>
+ <body>
+ <!DOCTYPE html>
+ </body>
+</html>
+''');
+ var doc = parser.parse();
+ expect(doc.body.outerHtml, '<body>\n \n \n\n</body>');
+ expect(parser.errors.length, 1);
+ ParseError error = parser.errors[0];
+ expect(error.errorCode, 'unexpected-doctype');
+ expect(error.span.start.line, 3);
+ // Note: error position is at the end, not the beginning
+ expect(error.span.start.column, 17);
+ });
+
+ test('text spans should have the correct length', () {
+ var textContent = '\n hello {{name}}';
+ var html = '<body><div>$textContent</div>';
+ var doc = parse(html, generateSpans: true);
+ Text text = doc.body.nodes[0].nodes[0];
+ expect(text, new isInstanceOf<Text>());
+ expect(text.data, textContent);
+ expect(text.sourceSpan.start.offset, html.indexOf(textContent));
+ expect(text.sourceSpan.length, textContent.length);
+ });
+
+ test('attribute spans', () {
+ var text = '<element name="x-foo" extends="x-bar" constructor="Foo">';
+ var doc = parse(text, generateSpans: true);
+ var elem = doc.querySelector('element');
+ expect(elem.sourceSpan.start.offset, 0);
+ expect(elem.sourceSpan.end.offset, text.length);
+ expect(elem.sourceSpan.text, text);
+
+ expect(elem.attributeSpans['quux'], null);
+
+ var span = elem.attributeSpans['extends'];
+ expect(span.start.offset, text.indexOf('extends'));
+ expect(span.text, 'extends="x-bar"');
+ });
+
+ test('attribute value spans', () {
+ var text = '<element name="x-foo" extends="x-bar" constructor="Foo">';
+ var doc = parse(text, generateSpans: true);
+ var elem = doc.querySelector('element');
+
+ expect(elem.attributeValueSpans['quux'], null);
+
+ var span = elem.attributeValueSpans['extends'];
+ expect(span.start.offset, text.indexOf('x-bar'));
+ expect(span.text, 'x-bar');
+ });
+
+ test('attribute spans if no attributes', () {
+ var text = '<element>';
+ var doc = parse(text, generateSpans: true);
+ var elem = doc.querySelector('element');
+
+ expect(elem.attributeSpans['quux'], null);
+ expect(elem.attributeValueSpans['quux'], null);
+ });
+
+ test('attribute spans if no attribute value', () {
+ var text = '<foo template>';
+ var doc = parse(text, generateSpans: true);
+ var elem = doc.querySelector('foo');
+
+ expect(
+ elem.attributeSpans['template'].start.offset, text.indexOf('template'));
+ expect(elem.attributeValueSpans.containsKey('template'), false);
+ });
+
+ test('attribute spans null if code parsed without spans', () {
+ var text = '<element name="x-foo" extends="x-bar" constructor="Foo">';
+ var doc = parse(text);
+ var elem = doc.querySelector('element');
+ expect(elem.sourceSpan, null);
+ expect(elem.attributeSpans['quux'], null);
+ expect(elem.attributeSpans['extends'], null);
+ });
+
+ test('void element innerHTML', () {
+ var doc = parse('<div></div>');
+ expect(doc.body.innerHtml, '<div></div>');
+ doc = parse('<body><script></script></body>');
+ expect(doc.body.innerHtml, '<script></script>');
+ doc = parse('<br>');
+ expect(doc.body.innerHtml, '<br>');
+ doc = parse('<br><foo><bar>');
+ expect(doc.body.innerHtml, '<br><foo><bar></bar></foo>');
+ });
+
+ test('empty document has html, body, and head', () {
+ var doc = parse('');
+ var html = '<html><head></head><body></body></html>';
+ expect(doc.outerHtml, html);
+ expect(doc.documentElement.outerHtml, html);
+ expect(doc.head.outerHtml, '<head></head>');
+ expect(doc.body.outerHtml, '<body></body>');
+ });
+
+ test('strange table case', () {
+ var doc = parse('<table><tbody><foo>').body;
+ expect(doc.innerHtml, '<foo></foo><table><tbody></tbody></table>');
+ });
+
+ group('html serialization', () {
+ test('attribute order', () {
+ // Note: the spec only requires a stable order.
+ // However, we preserve the input order via LinkedHashMap
+ var body = parse('<foo d=1 a=2 c=3 b=4>').body;
+ expect(body.innerHtml, '<foo d="1" a="2" c="3" b="4"></foo>');
+ expect(body.querySelector('foo').attributes.remove('a'), '2');
+ expect(body.innerHtml, '<foo d="1" c="3" b="4"></foo>');
+ body.querySelector('foo').attributes['a'] = '0';
+ expect(body.innerHtml, '<foo d="1" c="3" b="4" a="0"></foo>');
+ });
+
+ test('escaping Text node in <script>', () {
+ Element e = parseFragment('<script>a && b</script>').firstChild;
+ expect(e.outerHtml, '<script>a && b</script>');
+ });
+
+ test('escaping Text node in <span>', () {
+ Element e = parseFragment('<span>a && b</span>').firstChild;
+ expect(e.outerHtml, '<span>a &amp;&amp; b</span>');
+ });
+
+ test('Escaping attributes', () {
+ Element e = parseFragment('<div class="a<b>">').firstChild;
+ expect(e.outerHtml, '<div class="a<b>"></div>');
+ e = parseFragment('<div class=\'a"b\'>').firstChild;
+ expect(e.outerHtml, '<div class="a&quot;b"></div>');
+ });
+
+ test('Escaping non-breaking space', () {
+ var text = '<span>foO\u00A0bar</span>';
+ expect(text.codeUnitAt(text.indexOf('O') + 1), 0xA0);
+ Element e = parseFragment(text).firstChild;
+ expect(e.outerHtml, '<span>foO&nbsp;bar</span>');
+ });
+
+ test('Newline after <pre>', () {
+ Element e = parseFragment('<pre>\n\nsome text</span>').firstChild;
+ expect((e.firstChild as Text).data, '\nsome text');
+ expect(e.outerHtml, '<pre>\n\nsome text</pre>');
+
+ e = parseFragment('<pre>\nsome text</span>').firstChild;
+ expect((e.firstChild as Text).data, 'some text');
+ expect(e.outerHtml, '<pre>some text</pre>');
+ });
+
+ test('xml namespaces', () {
+ // Note: this is a nonsensical example, but it triggers the behavior
+ // we're looking for with attribute names in foreign content.
+ var doc = parse('''
+ <body>
+ <svg>
+ <desc xlink:type="simple"
+ xlink:href="http://example.com/logo.png"
+ xlink:show="new"></desc>
+ ''');
+ var n = doc.querySelector('desc');
+ var keys = n.attributes.keys.toList();
+ expect(keys[0], new isInstanceOf<AttributeName>());
+ expect(keys[0].prefix, 'xlink');
+ expect(keys[0].namespace, 'http://www.w3.org/1999/xlink');
+ expect(keys[0].name, 'type');
+
+ expect(n.outerHtml, '<desc xlink:type="simple" '
+ 'xlink:href="http://example.com/logo.png" xlink:show="new"></desc>');
+ });
+ });
+
+ test('error printing without spans', () {
+ var parser = new HtmlParser('foo');
+ var doc = parser.parse();
+ expect(doc.body.innerHtml, 'foo');
+ expect(parser.errors.length, 1);
+ expect(parser.errors[0].errorCode, 'expected-doctype-but-got-chars');
+ expect(parser.errors[0].message,
+ 'Unexpected non-space characters. Expected DOCTYPE.');
+ expect(parser.errors[0].toString(),
+ 'ParserError on line 1, column 4: Unexpected non-space characters. '
+ 'Expected DOCTYPE.\n'
+ 'foo\n'
+ ' ^');
+ });
+
+ test('Element.text', () {
+ var doc = parseFragment('<div>foo<div>bar</div>baz</div>');
+ var e = doc.firstChild;
+ var text = e.firstChild;
+ expect((text as Text).data, 'foo');
+ expect(e.text, 'foobarbaz');
+
+ e.text = 'FOO';
+ expect(e.nodes.length, 1);
+ expect(e.firstChild, isNot(text), reason: 'should create a new tree');
+ expect((e.firstChild as Text).data, 'FOO');
+ expect(e.text, 'FOO');
+ });
+
+ test('Text.text', () {
+ var doc = parseFragment('<div>foo<div>bar</div>baz</div>');
+ var e = doc.firstChild;
+ Text text = e.firstChild;
+ expect(text.data, 'foo');
+ expect(text.text, 'foo');
+
+ text.text = 'FOO';
+ expect(text.data, 'FOO');
+ expect(e.text, 'FOObarbaz');
+ expect(text.text, 'FOO');
+ });
+
+ test('Comment.text', () {
+ var doc = parseFragment('<div><!--foo-->bar</div>');
+ var e = doc.firstChild;
+ var c = e.firstChild;
+ expect((c as Comment).data, 'foo');
+ expect(c.text, 'foo');
+ expect(e.text, 'bar');
+
+ c.text = 'qux';
+ expect(c.data, 'qux');
+ expect(c.text, 'qux');
+ expect(e.text, 'bar');
+ });
+
+ test('foreignObject end tag', () {
+ var p = new HtmlParser('''
+<svg width="100%" height="100%" xmlns="http://www.w3.org/2000/svg"
+ version="1.1">
+ <foreignObject width="320px" height="200px">
+ <x-flow></x-flow>
+ </foreignObject>
+</svg>''');
+ var doc = p.parseFragment();
+ expect(p.errors, isEmpty);
+ var svg = doc.querySelector('svg');
+ expect(svg.children[0].children[0].localName, 'x-flow');
+ });
+
+ group('Encoding pre-parser', () {
+ getEncoding(s) => new EncodingParser(s.codeUnits).getEncoding();
+
+ test('gets encoding from meta charset', () {
+ expect(getEncoding('<meta charset="utf-16">'), 'utf-16');
+ });
+
+ test('gets encoding from meta in head', () {
+ expect(getEncoding('<head><meta charset="utf-16">'), 'utf-16');
+ });
+
+ test('skips comments', () {
+ expect(getEncoding('<!--comment--><meta charset="utf-16">'), 'utf-16');
+ });
+
+ test('stops if no match', () {
+ // missing closing tag
+ expect(getEncoding('<meta charset="utf-16"'), null);
+ });
+
+ test('ignores whitespace', () {
+ expect(getEncoding(' <meta charset="utf-16">'), 'utf-16');
+ });
+ });
+}
+
+_testElementSpans() {
+ assertSpan(SourceSpan span, int offset, int end, String text) {
+ expect(span, isNotNull);
+ expect(span.start.offset, offset);
+ expect(span.end.offset, end);
+ expect(span.text, text);
+ }
+
+ group('element spans', () {
+ test('html and body', () {
+ var text = '<html><body>123</body></html>';
+ var doc = parse(text, generateSpans: true);
+ {
+ var elem = doc.querySelector('html');
+ assertSpan(elem.sourceSpan, 0, 6, '<html>');
+ assertSpan(elem.endSourceSpan, 22, 29, '</html>');
+ }
+ {
+ var elem = doc.querySelector('body');
+ assertSpan(elem.sourceSpan, 6, 12, '<body>');
+ assertSpan(elem.endSourceSpan, 15, 22, '</body>');
+ }
+ });
+
+ test('normal', () {
+ var text = '<div><element><span></span></element></div>';
+ var doc = parse(text, generateSpans: true);
+ var elem = doc.querySelector('element');
+ assertSpan(elem.sourceSpan, 5, 14, '<element>');
+ assertSpan(elem.endSourceSpan, 27, 37, '</element>');
+ });
+
+ test('block', () {
+ var text = '<div>123</div>';
+ var doc = parse(text, generateSpans: true);
+ var elem = doc.querySelector('div');
+ assertSpan(elem.sourceSpan, 0, 5, '<div>');
+ assertSpan(elem.endSourceSpan, 8, 14, '</div>');
+ });
+
+ test('form', () {
+ var text = '<form>123</form>';
+ var doc = parse(text, generateSpans: true);
+ var elem = doc.querySelector('form');
+ assertSpan(elem.sourceSpan, 0, 6, '<form>');
+ assertSpan(elem.endSourceSpan, 9, 16, '</form>');
+ });
+
+ test('p explicit end', () {
+ var text = '<p>123</p>';
+ var doc = parse(text, generateSpans: true);
+ var elem = doc.querySelector('p');
+ assertSpan(elem.sourceSpan, 0, 3, '<p>');
+ assertSpan(elem.endSourceSpan, 6, 10, '</p>');
+ });
+
+ test('p implicit end', () {
+ var text = '<div><p>123<p>456</div>';
+ var doc = parse(text, generateSpans: true);
+ var elem = doc.querySelector('p');
+ assertSpan(elem.sourceSpan, 5, 8, '<p>');
+ expect(elem.endSourceSpan, isNull);
+ });
+
+ test('li', () {
+ var text = '<li>123</li>';
+ var doc = parse(text, generateSpans: true);
+ var elem = doc.querySelector('li');
+ assertSpan(elem.sourceSpan, 0, 4, '<li>');
+ assertSpan(elem.endSourceSpan, 7, 12, '</li>');
+ });
+
+ test('heading', () {
+ var text = '<h1>123</h1>';
+ var doc = parse(text, generateSpans: true);
+ var elem = doc.querySelector('h1');
+ assertSpan(elem.sourceSpan, 0, 4, '<h1>');
+ assertSpan(elem.endSourceSpan, 7, 12, '</h1>');
+ });
+
+ test('formatting', () {
+ var text = '<b>123</b>';
+ var doc = parse(text, generateSpans: true);
+ var elem = doc.querySelector('b');
+ assertSpan(elem.sourceSpan, 0, 3, '<b>');
+ assertSpan(elem.endSourceSpan, 6, 10, '</b>');
+ });
+
+ test('table tbody', () {
+ var text = '<table><tbody> </tbody></table>';
+ var doc = parse(text, generateSpans: true);
+ {
+ var elem = doc.querySelector('tbody');
+ assertSpan(elem.sourceSpan, 7, 14, '<tbody>');
+ assertSpan(elem.endSourceSpan, 16, 24, '</tbody>');
+ }
+ });
+
+ test('table tr td', () {
+ var text = '<table><tr><td>123</td></tr></table>';
+ var doc = parse(text, generateSpans: true);
+ {
+ var elem = doc.querySelector('table');
+ assertSpan(elem.sourceSpan, 0, 7, '<table>');
+ assertSpan(elem.endSourceSpan, 28, 36, '</table>');
+ }
+ {
+ var elem = doc.querySelector('tr');
+ assertSpan(elem.sourceSpan, 7, 11, '<tr>');
+ assertSpan(elem.endSourceSpan, 23, 28, '</tr>');
+ }
+ {
+ var elem = doc.querySelector('td');
+ assertSpan(elem.sourceSpan, 11, 15, '<td>');
+ assertSpan(elem.endSourceSpan, 18, 23, '</td>');
+ }
+ });
+
+ test('select optgroup option', () {
+ var text = '<select><optgroup><option>123</option></optgroup></select>';
+ var doc = parse(text, generateSpans: true);
+ {
+ var elem = doc.querySelector('select');
+ assertSpan(elem.sourceSpan, 0, 8, '<select>');
+ assertSpan(elem.endSourceSpan, 49, 58, '</select>');
+ }
+ {
+ var elem = doc.querySelector('optgroup');
+ assertSpan(elem.sourceSpan, 8, 18, '<optgroup>');
+ assertSpan(elem.endSourceSpan, 38, 49, '</optgroup>');
+ }
+ {
+ var elem = doc.querySelector('option');
+ assertSpan(elem.sourceSpan, 18, 26, '<option>');
+ assertSpan(elem.endSourceSpan, 29, 38, '</option>');
+ }
+ });
+ });
+}
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