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1 /* | 1 /* |
2 * testharness-helpers contains various useful extensions to testharness.js to | 2 * testharness-helpers contains various useful extensions to testharness.js to |
3 * allow them to be used across multiple tests before they have been | 3 * allow them to be used across multiple tests before they have been |
4 * upstreamed. This file is intended to be usable from both document and worker | 4 * upstreamed. This file is intended to be usable from both document and worker |
5 * environments, so code should for example not rely on the DOM. | 5 * environments, so code should for example not rely on the DOM. |
6 */ | 6 */ |
7 | 7 |
8 // Returns a promise that fulfills after the provided |promise| is fulfilled. | 8 // Returns a promise that fulfills after the provided |promise| is fulfilled. |
9 // The |test| succeeds only if |promise| rejects with an exception matching | 9 // The |test| succeeds only if |promise| rejects with an exception matching |
10 // |code|. Accepted values for |code| follow those accepted for assert_throws(). | 10 // |code|. Accepted values for |code| follow those accepted for assert_throws(). |
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25 function() { | 25 function() { |
26 throw 'assert_promise_rejects: ' + description + ' Promise did not reject.
'; | 26 throw 'assert_promise_rejects: ' + description + ' Promise did not reject.
'; |
27 }, | 27 }, |
28 function(e) { | 28 function(e) { |
29 if (code !== undefined) { | 29 if (code !== undefined) { |
30 assert_throws(code, function() { throw e; }, description); | 30 assert_throws(code, function() { throw e; }, description); |
31 } | 31 } |
32 }); | 32 }); |
33 } | 33 } |
34 | 34 |
35 // Equivalent to testharness.js's assert_object_equals(), but correctly | |
36 // tests that property ownership is the same. | |
37 // TODO(jsbell): Upstream this to assert_object_equals and remove. | |
38 function assert_object_equals_fixed(actual, expected, description) | |
39 { | |
40 function check_equal(actual, expected, stack) | |
41 { | |
42 stack.push(actual); | |
43 var p; | |
44 for (p in actual) { | |
45 assert_equals(expected.hasOwnProperty(p), actual.hasOwnProperty(p), | |
46 "different property ownership: " + p + " - " + descrip
tion); | |
47 | |
48 if (typeof actual[p] === "object" && actual[p] !== null) { | |
49 if (stack.indexOf(actual[p]) === -1) { | |
50 check_equal(actual[p], expected[p], stack); | |
51 } | |
52 } else { | |
53 assert_equals(actual[p], expected[p], description); | |
54 } | |
55 } | |
56 for (p in expected) { | |
57 assert_equals(expected.hasOwnProperty(p), actual.hasOwnProperty(p), | |
58 "different property ownership: " + p + " - " + descrip
tion); | |
59 } | |
60 stack.pop(); | |
61 } | |
62 check_equal(actual, expected, []); | |
63 } | |
64 | |
65 // Equivalent to assert_in_array, but uses the object-aware equivalence relation | |
66 // provided by assert_object_equals_fixed(). | |
67 function assert_object_in_array(actual, expected_array, description) { | |
68 assert_true(expected_array.some(function(element) { | |
69 try { | |
70 assert_object_equals_fixed(actual, element); | |
71 return true; | |
72 } catch (e) { | |
73 return false; | |
74 } | |
75 }), description); | |
76 } | |
77 | |
78 // Assert that the two arrays |actual| and |expected| contain the same set of | |
79 // elements as determined by assert_object_equals_fixed. The order is not signif
icant. | |
80 // | |
81 // |expected| is assumed to not contain any duplicates as determined by | |
82 // assert_object_equals_fixed(). | |
83 function assert_array_equivalent(actual, expected, description) { | |
84 assert_true(Array.isArray(actual), description); | |
85 assert_equals(actual.length, expected.length, description); | |
86 expected.forEach(function(expected_element) { | |
87 // assert_in_array treats the first argument as being 'actual', and the | |
88 // second as being 'expected array'. We are switching them around because | |
89 // we want to be resilient against the |actual| array containing | |
90 // duplicates. | |
91 assert_object_in_array(expected_element, actual, description); | |
92 }); | |
93 } | |
94 | |
95 // Asserts that two arrays |actual| and |expected| contain the same set of | |
96 // elements as determined by assert_object_equals(). The corresponding elements | |
97 // must occupy corresponding indices in their respective arrays. | |
98 function assert_array_objects_equals(actual, expected, description) { | |
99 assert_true(Array.isArray(actual), description); | |
100 assert_equals(actual.length, expected.length, description); | |
101 actual.forEach(function(value, index) { | |
102 assert_object_equals(value, expected[index], | |
103 description + ' : object[' + index + ']'); | |
104 }); | |
105 } | |
106 | |
107 // Asserts that |object| that is an instance of some interface has the attribute | 35 // Asserts that |object| that is an instance of some interface has the attribute |
108 // |attribute_name| following the conditions specified by WebIDL, but it's | 36 // |attribute_name| following the conditions specified by WebIDL, but it's |
109 // acceptable that the attribute |attribute_name| is an own property of the | 37 // acceptable that the attribute |attribute_name| is an own property of the |
110 // object because we're in the middle of moving the attribute to a prototype | 38 // object because we're in the middle of moving the attribute to a prototype |
111 // chain. Once we complete the transition to prototype chains, | 39 // chain. Once we complete the transition to prototype chains, |
112 // assert_will_be_idl_attribute must be replaced with assert_idl_attribute | 40 // assert_will_be_idl_attribute must be replaced with assert_idl_attribute |
113 // defined in testharness.js. | 41 // defined in testharness.js. |
114 // | 42 // |
115 // FIXME: Remove assert_will_be_idl_attribute once we complete the transition | 43 // FIXME: Remove assert_will_be_idl_attribute once we complete the transition |
116 // of moving the DOM attributes to prototype chains. (http://crbug.com/43394) | 44 // of moving the DOM attributes to prototype chains. (http://crbug.com/43394) |
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135 if (typeof src != "object") | 63 if (typeof src != "object") |
136 return src; | 64 return src; |
137 var dst = Array.isArray(src) ? [] : {}; | 65 var dst = Array.isArray(src) ? [] : {}; |
138 for (var property in src) { | 66 for (var property in src) { |
139 dst[property] = deepCopy(src[property]); | 67 dst[property] = deepCopy(src[property]); |
140 } | 68 } |
141 return dst; | 69 return dst; |
142 } | 70 } |
143 return JSON.stringify(deepCopy(object)); | 71 return JSON.stringify(deepCopy(object)); |
144 } | 72 } |
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