* first action! (#1)

node_modules/xtend/test.js

@@ -0,0 +1,103 @@
+var test = require("tape")
+var extend = require("./")
+var mutableExtend = require("./mutable")
+
+test("merge", function(assert) {
+    var a = { a: "foo" }
+    var b = { b: "bar" }
+
+    assert.deepEqual(extend(a, b), { a: "foo", b: "bar" })
+    assert.end()
+})
+
+test("replace", function(assert) {
+    var a = { a: "foo" }
+    var b = { a: "bar" }
+
+    assert.deepEqual(extend(a, b), { a: "bar" })
+    assert.end()
+})
+
+test("undefined", function(assert) {
+    var a = { a: undefined }
+    var b = { b: "foo" }
+
+    assert.deepEqual(extend(a, b), { a: undefined, b: "foo" })
+    assert.deepEqual(extend(b, a), { a: undefined, b: "foo" })
+    assert.end()
+})
+
+test("handle 0", function(assert) {
+    var a = { a: "default" }
+    var b = { a: 0 }
+
+    assert.deepEqual(extend(a, b), { a: 0 })
+    assert.deepEqual(extend(b, a), { a: "default" })
+    assert.end()
+})
+
+test("is immutable", function (assert) {
+    var record = {}
+
+    extend(record, { foo: "bar" })
+    assert.equal(record.foo, undefined)
+    assert.end()
+})
+
+test("null as argument", function (assert) {
+    var a = { foo: "bar" }
+    var b = null
+    var c = void 0
+
+    assert.deepEqual(extend(b, a, c), { foo: "bar" })
+    assert.end()
+})
+
+test("mutable", function (assert) {
+    var a = { foo: "bar" }
+
+    mutableExtend(a, { bar: "baz" })
+
+    assert.equal(a.bar, "baz")
+    assert.end()
+})
+
+test("null prototype", function(assert) {
+    var a = { a: "foo" }
+    var b = Object.create(null)
+    b.b = "bar";
+
+    assert.deepEqual(extend(a, b), { a: "foo", b: "bar" })
+    assert.end()
+})
+
+test("null prototype mutable", function (assert) {
+    var a = { foo: "bar" }
+    var b = Object.create(null)
+    b.bar = "baz";
+
+    mutableExtend(a, b)
+
+    assert.equal(a.bar, "baz")
+    assert.end()
+})
+
+test("prototype pollution", function (assert) {
+    var a = {}
+    var maliciousPayload = '{"__proto__":{"oops":"It works!"}}'
+
+    assert.strictEqual(a.oops, undefined)
+    extend({}, maliciousPayload)
+    assert.strictEqual(a.oops, undefined)
+    assert.end()
+})
+
+test("prototype pollution mutable", function (assert) {
+    var a = {}
+    var maliciousPayload = '{"__proto__":{"oops":"It works!"}}'
+
+    assert.strictEqual(a.oops, undefined)
+    mutableExtend({}, maliciousPayload)
+    assert.strictEqual(a.oops, undefined)
+    assert.end()
+})