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()
})
