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Support EJSON.clone(arguments).

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This enables (eg) Meteor.apply('foo', arguments). Fixes #946.
This commit is contained in:
David Glasser
2013-04-15 17:24:05 -07:00
parent 49822939c2
commit 583508e10d
2 changed files with 24 additions and 5 deletions
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8
packages/ejson/ejson.js
View File

@@ -301,11 +301,9 @@ EJSON.clone = function (v) {
}
return ret;
}
if (_.isArray(v)) {
ret = v.slice(0);
for (var i = 0; i < v.length; i++)
ret[i] = EJSON.clone(ret[i]);
return ret;
// Clone arrays (and turn 'arguments' into an array).
if (_.isArray(v) || _.isArguments(v)) {
return _.map(v, EJSON.clone);
}
// handle general user-defined typed Objects if they have a clone method
if (typeof v.clone === 'function') {

21
packages/ejson/ejson_test.js
View File

@@ -51,3 +51,24 @@ Tinytest.add("ejson - equality and falsiness", function (test) {
test.isFalse(EJSON.equals(undefined, {foo: "foo"}));
test.isFalse(EJSON.equals({foo: "foo"}, undefined));
});
Tinytest.add("ejson - clone", function (test) {
var cloneTest = function (x, identical) {
var y = EJSON.clone(x);
test.isTrue(EJSON.equals(x, y));
test.equal(x === y, !!identical);
};
cloneTest(null, true);
cloneTest(undefined, true);
cloneTest(42, true);
cloneTest("asdf", true);
cloneTest([1, 2, 3]);
cloneTest([1, "fasdf", {foo: 42}]);
cloneTest({x: 42, y: "asdf"});
var testCloneArgs = function (/*arguments*/) {
var clonedArgs = EJSON.clone(arguments);
test.equal(clonedArgs, [1, 2, "foo", [4]]);
};
testCloneArgs(1, 2, "foo", [4]);
});