Function TestDynamicArray

object_dynamic_test.go:167–245

(t *testing.T)

}

func TestDynamicArray(t *testing.T) {
	vm := New()
	dynObj := &testDynArray{
		r: vm,
	}
	a := vm.NewDynamicArray(dynObj)
	vm.Set("a", a)
	vm.testScriptWithTestLibX(`
	assert(a instanceof Array, "instanceof Array");
	assert(a instanceof Object, "instanceof Object");
	assert(a === a, "self equality");
	assert(a !== [], "non-equality");
	assert(Array.isArray(a), "isArray()");
	assert("length" in a, "length in a");
	assert.sameValue(a.length, 0, "len == 0");
	assert.sameValue(a[0], undefined, "a[0] (1)");

	a[0] = 0;
	assert.sameValue(a[0], 0, "a[0] (2)");
	assert.sameValue(a.length, 1, "length");
	assert(deepEqual(Object.getOwnPropertyDescriptor(a, 0), {value: 0, writable: true, enumerable: true, configurable: true}), "prop desc");
	assert(deepEqual(Object.getOwnPropertyDescriptor(a, "length"), {value: 1, writable: true, enumerable: false, configurable: false}), "length prop desc");

	assert("__proto__" in a, "__proto__ in a");
	assert.sameValue(a.__proto__, Array.prototype, "__proto__");

	assert(compareArray(Object.keys(a), ["0"]), "Object.keys()");
	assert(compareArray(Reflect.ownKeys(a), ["0", "length"]), "Reflect.ownKeys()");

	a.length = 2;
	assert.sameValue(a.length, 2, "length after grow");
	assert.sameValue(a[1], undefined, "a[1]");

	a[1] = 1;
	assert.sameValue(a[1], 1, "a[1] after set");
	a.length = 1;
	assert.sameValue(a.length, 1, "length after shrink");
	assert.sameValue(a[1], undefined, "a[1] after shrink");
	a.length = 2;
	assert.sameValue(a.length, 2, "length after shrink and grow");
	assert.sameValue(a[1], undefined, "a[1] after grow");

	a[0] = 3; a[1] = 1; a[2] = 2;
	assert.sameValue(a.length, 3);
	var keys = [];
	for (var key in a) {
		keys.push(key);
	}
	assert(compareArray(keys, ["0","1","2"]), "for-in");

	var vals = [];
	for (var val of a) {
		vals.push(val);
	}
	assert(compareArray(vals, [3,1,2]), "for-of");

	a.sort();
	assert(compareArray(a, [1,2,3]), "sort: "+a);