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38 //-----------------------------------------------------------------------------
39 var BUGNUMBER = "(none)";
40 var summary = "Basic support for accessing iterable objects using Iterator";
43 printBugNumber(BUGNUMBER);
52 function Array_equals(a, b)
54 if (!(a instanceof Array) || !(b instanceof Array))
55 throw new Error("Arguments not both of type Array");
56 if (a.length != b.length)
58 for (var i = 0, sz = a.length; i < sz; i++)
64 var iterable = { persistedProp: 17 };
68 // nothing unusual so far -- verify basic properties
69 for (var i in iterable)
71 if (i != "persistedProp")
72 throw "no persistedProp!";
73 if (iterable[i] != 17)
74 throw "iterable[\"persistedProp\"] == 17";
77 var keys = ["foo", "bar", "baz"];
78 var vals = [6, 5, 14];
80 iterable.__iterator__ =
86 for (var i = 0; i < keys.length; i++)
91 yield [keys[i], vals[i]];
97 /* Test [key, value] Iterator */
99 var lastSeen = "INITIALVALUE";
100 var it = Iterator(iterable);
105 var nextVal = it.next();
106 if (!Array_equals(nextVal, [keys[index], vals[index]]))
107 throw "Iterator(iterable): wrong next result\n" +
108 " expected: " + [keys[index], vals[index]] + "\n" +
109 " actual: " + nextVal;
110 lastSeen = keys[index];
116 if (lastSeen !== keys[keys.length - 1])
117 throw "Iterator(iterable): not everything was iterated!\n" +
118 " last iterated was: " + lastSeen + "\n" +
120 if (e !== StopIteration)
121 throw "Iterator(iterable): missing or invalid StopIteration";
124 if (iterable.persistedProp != 17)
125 throw "iterable.persistedProp not persisted!";
127 /* Test [key, value] Iterator, called with an explicit |false| parameter */
129 lastSeen = "INITIALVALUE";
130 it = Iterator(iterable, false);
135 var nextVal = it.next();
136 if (!Array_equals(nextVal, [keys[index], vals[index]]))
137 throw "Iterator(iterable, false): wrong next result\n" +
138 " expected: " + [keys[index], vals[index]] + "\n" +
139 " actual: " + nextVal;
140 lastSeen = keys[index];
146 if (lastSeen !== keys[keys.length - 1])
147 throw "Iterator(iterable, false): not everything was iterated!\n" +
148 " last iterated was: " + lastSeen + "\n" +
150 if (e !== StopIteration)
151 throw "Iterator(iterable, false): missing or invalid StopIteration";
154 if (iterable.persistedProp != 17)
155 throw "iterable.persistedProp not persisted!";
157 /* Test key-only Iterator */
159 lastSeen = undefined;
160 it = Iterator(iterable, true);
165 var nextVal = it.next();
166 if (nextVal !== keys[index])
167 throw "Iterator(iterable, true): wrong next result\n" +
168 " expected: " + keys[index] + "\n" +
169 " actual: " + nextVal;
170 lastSeen = keys[index];
176 if (lastSeen !== keys[keys.length - 1])
177 throw "Iterator(iterable, true): not everything was iterated!\n" +
178 " last iterated was: " + lastSeen + "\n" +
180 if (e !== StopIteration)
181 throw "Iterator(iterable, true): missing or invalid StopIteration";
184 if (iterable.persistedProp != 17)
185 throw "iterable.persistedProp not persisted!";
197 reportCompare(expect, actual, summary);