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comparison: js/src/tests/js1_7/extensions/basic-Iterator.js
js/src/tests/js1_7/extensions/basic-Iterator.js
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| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 //----------------------------------------------------------------------------- | |
| 7 var BUGNUMBER = "(none)"; | |
| 8 var summary = "Basic support for accessing iterable objects using Iterator"; | |
| 9 var actual, expect; | |
| 10 | |
| 11 printBugNumber(BUGNUMBER); | |
| 12 printStatus(summary); | |
| 13 | |
| 14 /************** | |
| 15 * BEGIN TEST * | |
| 16 **************/ | |
| 17 | |
| 18 var failed = false; | |
| 19 | |
| 20 function Array_equals(a, b) | |
| 21 { | |
| 22 if (!(a instanceof Array) || !(b instanceof Array)) | |
| 23 throw new Error("Arguments not both of type Array"); | |
| 24 if (a.length != b.length) | |
| 25 return false; | |
| 26 for (var i = 0, sz = a.length; i < sz; i++) | |
| 27 if (a[i] !== b[i]) | |
| 28 return false; | |
| 29 return true; | |
| 30 } | |
| 31 | |
| 32 var iterable = { persistedProp: 17 }; | |
| 33 | |
| 34 try | |
| 35 { | |
| 36 // nothing unusual so far -- verify basic properties | |
| 37 for (var i in iterable) | |
| 38 { | |
| 39 if (i != "persistedProp") | |
| 40 throw "no persistedProp!"; | |
| 41 if (iterable[i] != 17) | |
| 42 throw "iterable[\"persistedProp\"] == 17"; | |
| 43 } | |
| 44 | |
| 45 var keys = ["foo", "bar", "baz"]; | |
| 46 var vals = [6, 5, 14]; | |
| 47 | |
| 48 iterable.__iterator__ = | |
| 49 function(keysOnly) | |
| 50 { | |
| 51 var gen = | |
| 52 function() | |
| 53 { | |
| 54 for (var i = 0; i < keys.length; i++) | |
| 55 { | |
| 56 if (keysOnly) | |
| 57 yield keys[i]; | |
| 58 else | |
| 59 yield [keys[i], vals[i]]; | |
| 60 } | |
| 61 }; | |
| 62 return gen(); | |
| 63 }; | |
| 64 | |
| 65 /* Test [key, value] Iterator */ | |
| 66 var index = 0; | |
| 67 var lastSeen = "INITIALVALUE"; | |
| 68 var it = Iterator(iterable); | |
| 69 try | |
| 70 { | |
| 71 while (true) | |
| 72 { | |
| 73 var nextVal = it.next(); | |
| 74 if (!Array_equals(nextVal, [keys[index], vals[index]])) | |
| 75 throw "Iterator(iterable): wrong next result\n" + | |
| 76 " expected: " + [keys[index], vals[index]] + "\n" + | |
| 77 " actual: " + nextVal; | |
| 78 lastSeen = keys[index]; | |
| 79 index++; | |
| 80 } | |
| 81 } | |
| 82 catch (e) | |
| 83 { | |
| 84 if (lastSeen !== keys[keys.length - 1]) | |
| 85 throw "Iterator(iterable): not everything was iterated!\n" + | |
| 86 " last iterated was: " + lastSeen + "\n" + | |
| 87 " error: " + e; | |
| 88 if (e !== StopIteration) | |
| 89 throw "Iterator(iterable): missing or invalid StopIteration"; | |
| 90 } | |
| 91 | |
| 92 if (iterable.persistedProp != 17) | |
| 93 throw "iterable.persistedProp not persisted!"; | |
| 94 | |
| 95 /* Test [key, value] Iterator, called with an explicit |false| parameter */ | |
| 96 var index = 0; | |
| 97 lastSeen = "INITIALVALUE"; | |
| 98 it = Iterator(iterable, false); | |
| 99 try | |
| 100 { | |
| 101 while (true) | |
| 102 { | |
| 103 var nextVal = it.next(); | |
| 104 if (!Array_equals(nextVal, [keys[index], vals[index]])) | |
| 105 throw "Iterator(iterable, false): wrong next result\n" + | |
| 106 " expected: " + [keys[index], vals[index]] + "\n" + | |
| 107 " actual: " + nextVal; | |
| 108 lastSeen = keys[index]; | |
| 109 index++; | |
| 110 } | |
| 111 } | |
| 112 catch (e) | |
| 113 { | |
| 114 if (lastSeen !== keys[keys.length - 1]) | |
| 115 throw "Iterator(iterable, false): not everything was iterated!\n" + | |
| 116 " last iterated was: " + lastSeen + "\n" + | |
| 117 " error: " + e; | |
| 118 if (e !== StopIteration) | |
| 119 throw "Iterator(iterable, false): missing or invalid StopIteration"; | |
| 120 } | |
| 121 | |
| 122 if (iterable.persistedProp != 17) | |
| 123 throw "iterable.persistedProp not persisted!"; | |
| 124 | |
| 125 /* Test key-only Iterator */ | |
| 126 index = 0; | |
| 127 lastSeen = undefined; | |
| 128 it = Iterator(iterable, true); | |
| 129 try | |
| 130 { | |
| 131 while (true) | |
| 132 { | |
| 133 var nextVal = it.next(); | |
| 134 if (nextVal !== keys[index]) | |
| 135 throw "Iterator(iterable, true): wrong next result\n" + | |
| 136 " expected: " + keys[index] + "\n" + | |
| 137 " actual: " + nextVal; | |
| 138 lastSeen = keys[index]; | |
| 139 index++; | |
| 140 } | |
| 141 } | |
| 142 catch (e) | |
| 143 { | |
| 144 if (lastSeen !== keys[keys.length - 1]) | |
| 145 throw "Iterator(iterable, true): not everything was iterated!\n" + | |
| 146 " last iterated was: " + lastSeen + "\n" + | |
| 147 " error: " + e; | |
| 148 if (e !== StopIteration) | |
| 149 throw "Iterator(iterable, true): missing or invalid StopIteration"; | |
| 150 } | |
| 151 | |
| 152 if (iterable.persistedProp != 17) | |
| 153 throw "iterable.persistedProp not persisted!"; | |
| 154 } | |
| 155 catch (e) | |
| 156 { | |
| 157 failed = e; | |
| 158 } | |
| 159 | |
| 160 | |
| 161 | |
| 162 expect = false; | |
| 163 actual = failed; | |
| 164 | |
| 165 reportCompare(expect, actual, summary); |
