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Add more isLength tests.

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This commit is contained in:
John-David Dalton
2014-12-31 01:07:28 -06:00
parent a302ca3d6c
commit b2e8359d31
1 changed files with 11 additions and 14 deletions
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25
test/test.js
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@@ -4931,22 +4931,19 @@
_.each(collectionMethods, function(methodName) {
var func = _[methodName];
test('`_.' + methodName + '` should treat objects with lengths of `0` as array-like', 1, function() {
var pass = true;
func({ 'length': 0 }, function() { pass = false; }, 0);
ok(pass);
});
test('`_.' + methodName + '` should use `isLength` to determine whether a value is array-like', 2, function() {
function isIteratedAsObject(length) {
var result = false;
func({ 'length': length }, function() { result = true; }, 0);
return result;
}
test('`_.' + methodName + '` should not treat objects with negative lengths as array-like', 1, function() {
var pass = false;
func({ 'length': -1 }, function() { pass = true; }, 0);
ok(pass);
});
var values = [-1, '1', 1.1, Object(1), MAX_SAFE_INTEGER + 1],
expected = _.map(values, _.constant(true)),
actual = _.map(values, isIteratedAsObject);
test('`_.' + methodName + '` should not treat objects with non-number lengths as array-like', 1, function() {
var pass = false;
func({ 'length': '0' }, function() { pass = true; }, 0);
ok(pass);
deepEqual(actual, expected);
ok(!isIteratedAsObject(0));
});
});