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