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Add memoizeCapped.

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This commit is contained in:
John-David Dalton
2016-08-28 23:25:50 -07:00
parent 78a7fa1d14
commit e58de14437
2 changed files with 39 additions and 43 deletions
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57
test/test.js
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@@ -733,7 +733,8 @@
lodashStable.each([
'baseEach',
'isIndex',
'isIterateeCall'
'isIterateeCall',
'memoizeCapped'
], function(funcName) {
_['_' + funcName] = interopRequire(path.join(basePath, '_' + funcName));
});
@@ -14657,54 +14658,32 @@
_.memoize.Cache = oldCache;
});
}());
/*--------------------------------------------------------------------------*/
QUnit.module('memoizeCapped');
(function() {
var func = _._memoizeCapped;
QUnit.test('should enforce a max cache size of `MAX_MEMOIZE_SIZE`', function(assert) {
assert.expect(2);
var memoized = _.memoize(identity),
cache = memoized.cache;
if (func) {
var memoized = func(identity),
cache = memoized.cache;
lodashStable.times(MAX_MEMOIZE_SIZE, memoized);
assert.strictEqual(cache.size, MAX_MEMOIZE_SIZE);
lodashStable.times(MAX_MEMOIZE_SIZE, memoized);
assert.strictEqual(cache.size, MAX_MEMOIZE_SIZE);
memoized(MAX_MEMOIZE_SIZE);
assert.strictEqual(cache.size, 1);
});
QUnit.test('should not error when the max cache size is exceeded with a weak map', function(assert) {
assert.expect(1);
if (WeakMap) {
var memoized = _.memoize(identity),
pass = true;
try {
memoized.cache = new WeakMap;
lodashStable.times(MAX_MEMOIZE_SIZE + 1, function() { memoized({}); });
} catch (e) {
pass = false;
}
assert.ok(pass);
memoized(MAX_MEMOIZE_SIZE);
assert.strictEqual(cache.size, 1);
}
else {
skipAssert(assert);
skipAssert(assert, 2);
}
});
QUnit.test('should not error when the max cache size is exceeded with an immutable map', function(assert) {
assert.expect(1);
var memoized = _.memoize(identity),
pass = true;
try {
memoized.cache = new ImmutableCache;
lodashStable.times(MAX_MEMOIZE_SIZE + 1, memoized);
} catch (e) {
pass = false;
}
assert.ok(pass);
});
}());
/*--------------------------------------------------------------------------*/