ai_old/goja/object_goreflect_test.go
2024-09-20 16:50:35 +08:00

1668 lines
31 KiB
Go

package goja
import (
"errors"
"fmt"
"math"
"reflect"
"strings"
"testing"
"time"
)
func TestGoReflectGet(t *testing.T) {
const SCRIPT = `
o.X + o.Y;
`
type O struct {
X int
Y string
}
r := New()
o := O{X: 4, Y: "2"}
r.Set("o", o)
v, err := r.RunString(SCRIPT)
if err != nil {
t.Fatal(err)
}
if s, ok := v.(String); ok {
if s.String() != "42" {
t.Fatalf("Unexpected string: %s", s)
}
} else {
t.Fatalf("Unexpected type: %s", v)
}
}
func TestGoReflectSet(t *testing.T) {
const SCRIPT = `
o.X++;
o.Y += "P";
`
type O struct {
X int
Y string
}
r := New()
o := O{X: 4, Y: "2"}
r.Set("o", &o)
_, err := r.RunString(SCRIPT)
if err != nil {
t.Fatal(err)
}
if o.X != 5 {
t.Fatalf("Unexpected X: %d", o.X)
}
if o.Y != "2P" {
t.Fatalf("Unexpected Y: %s", o.Y)
}
r.Set("o", o)
_, err = r.RunString(SCRIPT)
if err != nil {
t.Fatal(err)
}
if res, ok := r.Get("o").Export().(O); ok {
if res.X != 6 {
t.Fatalf("Unexpected res.X: %d", res.X)
}
if res.Y != "2PP" {
t.Fatalf("Unexpected res.Y: %s", res.Y)
}
}
}
func TestGoReflectEnumerate(t *testing.T) {
const SCRIPT = `
var hasX = false;
var hasY = false;
for (var key in o) {
switch (key) {
case "X":
if (hasX) {
throw "Already have X";
}
hasX = true;
break;
case "Y":
if (hasY) {
throw "Already have Y";
}
hasY = true;
break;
default:
throw "Unexpected property: " + key;
}
}
hasX && hasY;
`
type S struct {
X, Y int
}
r := New()
r.Set("o", S{X: 40, Y: 2})
v, err := r.RunString(SCRIPT)
if err != nil {
t.Fatal(err)
}
if !v.StrictEquals(valueTrue) {
t.Fatalf("Expected true, got %v", v)
}
}
func TestGoReflectCustomIntUnbox(t *testing.T) {
const SCRIPT = `
i + 2;
`
type CustomInt int
var i CustomInt = 40
r := New()
r.Set("i", i)
v, err := r.RunString(SCRIPT)
if err != nil {
t.Fatal(err)
}
if !v.StrictEquals(intToValue(42)) {
t.Fatalf("Expected int 42, got %v", v)
}
}
func TestGoReflectPreserveCustomType(t *testing.T) {
const SCRIPT = `
i;
`
type CustomInt int
var i CustomInt = 42
r := New()
r.Set("i", i)
v, err := r.RunString(SCRIPT)
if err != nil {
t.Fatal(err)
}
ve := v.Export()
if ii, ok := ve.(CustomInt); ok {
if ii != i {
t.Fatalf("Wrong value: %v", ii)
}
} else {
t.Fatalf("Wrong type: %v", ve)
}
}
func TestGoReflectCustomIntValueOf(t *testing.T) {
const SCRIPT = `
if (i instanceof Number) {
i.valueOf();
} else {
throw new Error("Value is not a number");
}
`
type CustomInt int
var i CustomInt = 42
r := New()
r.Set("i", i)
v, err := r.RunString(SCRIPT)
if err != nil {
t.Fatal(err)
}
if !v.StrictEquals(intToValue(42)) {
t.Fatalf("Expected int 42, got %v", v)
}
}
func TestGoReflectEqual(t *testing.T) {
const SCRIPT = `
x === y;
`
type CustomInt int
var x CustomInt = 42
var y CustomInt = 42
r := New()
r.Set("x", x)
r.Set("y", y)
v, err := r.RunString(SCRIPT)
if err != nil {
t.Fatal(err)
}
if !v.StrictEquals(valueTrue) {
t.Fatalf("Expected true, got %v", v)
}
}
type testGoReflectMethod_O struct {
field string
Test string
}
func (o testGoReflectMethod_O) Method(s string) string {
return o.field + s
}
func TestGoReflectMethod(t *testing.T) {
const SCRIPT = `
o.Method(" 123")
`
o := testGoReflectMethod_O{
field: "test",
}
r := New()
r.Set("o", &o)
v, err := r.RunString(SCRIPT)
if err != nil {
t.Fatal(err)
}
if !v.StrictEquals(asciiString("test 123")) {
t.Fatalf("Expected 'test 123', got %v", v)
}
}
func (o *testGoReflectMethod_O) Set(s string) {
o.field = s
}
func (o *testGoReflectMethod_O) Get() string {
return o.field
}
func TestGoReflectMethodPtr(t *testing.T) {
const SCRIPT = `
o.Set("42")
o.Get()
`
o := testGoReflectMethod_O{
field: "test",
}
r := New()
r.Set("o", &o)
v, err := r.RunString(SCRIPT)
if err != nil {
t.Fatal(err)
}
if !v.StrictEquals(asciiString("42")) {
t.Fatalf("Expected '42', got %v", v)
}
}
func (b *testBoolS) Method() bool {
return bool(*b)
}
func TestGoReflectPtrMethodOnNonPtrValue(t *testing.T) {
var o testGoReflectMethod_O
o.Get()
vm := New()
vm.Set("o", o)
_, err := vm.RunString(`o.Get()`)
if err != nil {
t.Fatal(err)
}
_, err = vm.RunString(`o.Method()`)
if err != nil {
t.Fatal(err)
}
var b testBoolS
vm.Set("b", b)
_, err = vm.RunString(`b.Method()`)
if err != nil {
t.Fatal(err)
}
}
func TestGoReflectStructField(t *testing.T) {
type S struct {
F testGoReflectMethod_O
B testBoolS
}
var s S
vm := New()
vm.Set("s", &s)
const SCRIPT = `
s.F.Set("Test");
assert.sameValue(s.F.Method(""), "Test", "1");
s.B = true;
assert.sameValue(s.B.Method(), true, "2");
assert.sameValue(s.B.toString(), "B", "3");
`
vm.testScriptWithTestLib(SCRIPT, _undefined, t)
}
func TestGoReflectProp(t *testing.T) {
const SCRIPT = `
var d1 = Object.getOwnPropertyDescriptor(o, "Get");
var d2 = Object.getOwnPropertyDescriptor(o, "Test");
!d1.writable && !d1.configurable && d2.writable && !d2.configurable;
`
o := testGoReflectMethod_O{
field: "test",
}
r := New()
r.Set("o", &o)
v, err := r.RunString(SCRIPT)
if err != nil {
t.Fatal(err)
}
if !v.StrictEquals(valueTrue) {
t.Fatalf("Expected true, got %v", v)
}
}
func TestGoReflectRedefineFieldSuccess(t *testing.T) {
const SCRIPT = `
Object.defineProperty(o, "Test", {value: "AAA"}) === o;
`
o := testGoReflectMethod_O{}
r := New()
r.Set("o", &o)
v, err := r.RunString(SCRIPT)
if err != nil {
t.Fatal(err)
}
if !v.StrictEquals(valueTrue) {
t.Fatalf("Expected true, got %v", v)
}
if o.Test != "AAA" {
t.Fatalf("Expected 'AAA', got '%s'", o.Test)
}
}
func TestGoReflectRedefineFieldNonWritable(t *testing.T) {
const SCRIPT = `
var thrown = false;
try {
Object.defineProperty(o, "Test", {value: "AAA", writable: false});
} catch (e) {
if (e instanceof TypeError) {
thrown = true;
} else {
throw e;
}
}
thrown;
`
o := testGoReflectMethod_O{Test: "Test"}
r := New()
r.Set("o", &o)
v, err := r.RunString(SCRIPT)
if err != nil {
t.Fatal(err)
}
if !v.StrictEquals(valueTrue) {
t.Fatalf("Expected true, got %v", v)
}
if o.Test != "Test" {
t.Fatalf("Expected 'Test', got: '%s'", o.Test)
}
}
func TestGoReflectRedefineFieldConfigurable(t *testing.T) {
const SCRIPT = `
var thrown = false;
try {
Object.defineProperty(o, "Test", {value: "AAA", configurable: true});
} catch (e) {
if (e instanceof TypeError) {
thrown = true;
} else {
throw e;
}
}
thrown;
`
o := testGoReflectMethod_O{Test: "Test"}
r := New()
r.Set("o", &o)
v, err := r.RunString(SCRIPT)
if err != nil {
t.Fatal(err)
}
if !v.StrictEquals(valueTrue) {
t.Fatalf("Expected true, got %v", v)
}
if o.Test != "Test" {
t.Fatalf("Expected 'Test', got: '%s'", o.Test)
}
}
func TestGoReflectRedefineMethod(t *testing.T) {
const SCRIPT = `
var thrown = false;
try {
Object.defineProperty(o, "Method", {value: "AAA", configurable: true});
} catch (e) {
if (e instanceof TypeError) {
thrown = true;
} else {
throw e;
}
}
thrown;
`
o := testGoReflectMethod_O{Test: "Test"}
r := New()
r.Set("o", &o)
v, err := r.RunString(SCRIPT)
if err != nil {
t.Fatal(err)
}
if !v.StrictEquals(valueTrue) {
t.Fatalf("Expected true, got %v", v)
}
}
func TestGoReflectEmbeddedStruct(t *testing.T) {
const SCRIPT = `
if (o.ParentField2 !== "ParentField2") {
throw new Error("ParentField2 = " + o.ParentField2);
}
if (o.Parent.ParentField2 !== 2) {
throw new Error("o.Parent.ParentField2 = " + o.Parent.ParentField2);
}
if (o.ParentField1 !== 1) {
throw new Error("o.ParentField1 = " + o.ParentField1);
}
if (o.ChildField !== 3) {
throw new Error("o.ChildField = " + o.ChildField);
}
var keys = {};
for (var k in o) {
if (keys[k]) {
throw new Error("Duplicate key: " + k);
}
keys[k] = true;
}
var expectedKeys = ["ParentField2", "ParentField1", "Parent", "ChildField"];
for (var i in expectedKeys) {
if (!keys[expectedKeys[i]]) {
throw new Error("Missing key in enumeration: " + expectedKeys[i]);
}
delete keys[expectedKeys[i]];
}
var remainingKeys = Object.keys(keys);
if (remainingKeys.length > 0) {
throw new Error("Unexpected keys: " + remainingKeys);
}
o.ParentField2 = "ParentField22";
o.Parent.ParentField2 = 22;
o.ParentField1 = 11;
o.ChildField = 33;
`
type Parent struct {
ParentField1 int
ParentField2 int
}
type Child struct {
ParentField2 string
Parent
ChildField int
}
vm := New()
o := Child{
Parent: Parent{
ParentField1: 1,
ParentField2: 2,
},
ParentField2: "ParentField2",
ChildField: 3,
}
vm.Set("o", &o)
_, err := vm.RunString(SCRIPT)
if err != nil {
t.Fatal(err)
}
if o.ParentField2 != "ParentField22" {
t.Fatalf("ParentField2 = %q", o.ParentField2)
}
if o.Parent.ParentField2 != 22 {
t.Fatalf("Parent.ParentField2 = %d", o.Parent.ParentField2)
}
if o.ParentField1 != 11 {
t.Fatalf("ParentField1 = %d", o.ParentField1)
}
if o.ChildField != 33 {
t.Fatalf("ChildField = %d", o.ChildField)
}
}
type jsonTagNamer struct{}
func (jsonTagNamer) FieldName(_ reflect.Type, field reflect.StructField) string {
if jsonTag := field.Tag.Get("json"); jsonTag != "" {
return jsonTag
}
return field.Name
}
func (jsonTagNamer) MethodName(_ reflect.Type, method reflect.Method) string {
return method.Name
}
func TestGoReflectCustomNaming(t *testing.T) {
type testStructWithJsonTags struct {
A string `json:"b"` // <-- script sees field "A" as property "b"
}
o := &testStructWithJsonTags{"Hello world"}
r := New()
r.SetFieldNameMapper(&jsonTagNamer{})
r.Set("fn", func() *testStructWithJsonTags { return o })
t.Run("get property", func(t *testing.T) {
v, err := r.RunString(`fn().b`)
if err != nil {
t.Fatal(err)
}
if !v.StrictEquals(newStringValue(o.A)) {
t.Fatalf("Expected %q, got %v", o.A, v)
}
})
t.Run("set property", func(t *testing.T) {
_, err := r.RunString(`fn().b = "Hello universe"`)
if err != nil {
t.Fatal(err)
}
if o.A != "Hello universe" {
t.Fatalf("Expected \"Hello universe\", got %q", o.A)
}
})
t.Run("enumerate properties", func(t *testing.T) {
v, err := r.RunString(`Object.keys(fn())`)
if err != nil {
t.Fatal(err)
}
if !reflect.DeepEqual(v.Export(), []interface{}{"b"}) {
t.Fatalf("Expected [\"b\"], got %v", v.Export())
}
})
}
func TestGoReflectCustomObjNaming(t *testing.T) {
type testStructWithJsonTags struct {
A string `json:"b"` // <-- script sees field "A" as property "b"
}
r := New()
r.SetFieldNameMapper(&jsonTagNamer{})
t.Run("Set object in slice", func(t *testing.T) {
testSlice := &[]testStructWithJsonTags{{"Hello world"}}
r.Set("testslice", testSlice)
_, err := r.RunString(`testslice[0] = {b:"setted"}`)
if err != nil {
t.Fatal(err)
}
if (*testSlice)[0].A != "setted" {
t.Fatalf("Expected \"setted\", got %q", (*testSlice)[0])
}
})
t.Run("Set object in map", func(t *testing.T) {
testMap := map[string]testStructWithJsonTags{"key": {"Hello world"}}
r.Set("testmap", testMap)
_, err := r.RunString(`testmap["key"] = {b:"setted"}`)
if err != nil {
t.Fatal(err)
}
if testMap["key"].A != "setted" {
t.Fatalf("Expected \"setted\", got %q", testMap["key"])
}
})
t.Run("Add object to map", func(t *testing.T) {
testMap := map[string]testStructWithJsonTags{}
r.Set("testmap", testMap)
_, err := r.RunString(`testmap["newkey"] = {b:"setted"}`)
if err != nil {
t.Fatal(err)
}
if testMap["newkey"].A != "setted" {
t.Fatalf("Expected \"setted\", got %q", testMap["newkey"])
}
})
}
type fieldNameMapper1 struct{}
func (fieldNameMapper1) FieldName(_ reflect.Type, f reflect.StructField) string {
return strings.ToLower(f.Name)
}
func (fieldNameMapper1) MethodName(_ reflect.Type, m reflect.Method) string {
return m.Name
}
func TestNonStructAnonFields(t *testing.T) {
type Test1 struct {
M bool
}
type test3 []int
type Test4 []int
type Test2 struct {
test3
Test4
*Test1
}
const SCRIPT = `
JSON.stringify(a);
a.m && a.test3 === undefined && a.test4.length === 2
`
vm := New()
vm.SetFieldNameMapper(fieldNameMapper1{})
vm.Set("a", &Test2{Test1: &Test1{M: true}, Test4: []int{1, 2}, test3: nil})
v, err := vm.RunString(SCRIPT)
if err != nil {
t.Fatal(err)
}
if !v.StrictEquals(valueTrue) {
t.Fatalf("Unexepected result: %v", v)
}
}
func TestStructNonAddressable(t *testing.T) {
type S struct {
Field int
}
const SCRIPT = `
"use strict";
if (!Object.getOwnPropertyDescriptor(s, "Field").writable) {
throw new Error("s.Field is non-writable");
}
if (!Object.getOwnPropertyDescriptor(s1, "Field").writable) {
throw new Error("s1.Field is non-writable");
}
s1.Field = 42;
s.Field = 43;
s;
`
var s S
vm := New()
vm.Set("s", s)
vm.Set("s1", &s)
v, err := vm.RunString(SCRIPT)
if err != nil {
t.Fatal(err)
}
exp := v.Export()
if s1, ok := exp.(S); ok {
if s1.Field != 43 {
t.Fatal(s1)
}
} else {
t.Fatalf("Wrong type: %T", exp)
}
if s.Field != 42 {
t.Fatalf("Unexpected s.Field value: %d", s.Field)
}
}
type testFieldMapper struct {
}
func (testFieldMapper) FieldName(_ reflect.Type, f reflect.StructField) string {
if tag := f.Tag.Get("js"); tag != "" {
if tag == "-" {
return ""
}
return tag
}
return f.Name
}
func (testFieldMapper) MethodName(_ reflect.Type, m reflect.Method) string {
return m.Name
}
func TestHidingAnonField(t *testing.T) {
type InnerType struct {
AnotherField string
}
type OuterType struct {
InnerType `js:"-"`
SomeField string
}
const SCRIPT = `
var a = Object.getOwnPropertyNames(o);
if (a.length !== 2) {
throw new Error("unexpected length: " + a.length);
}
if (a.indexOf("SomeField") === -1) {
throw new Error("no SomeField");
}
if (a.indexOf("AnotherField") === -1) {
throw new Error("no SomeField");
}
`
var o OuterType
vm := New()
vm.SetFieldNameMapper(testFieldMapper{})
vm.Set("o", &o)
_, err := vm.RunString(SCRIPT)
if err != nil {
t.Fatal(err)
}
}
func TestFieldOverriding(t *testing.T) {
type InnerType struct {
AnotherField string
AnotherField1 string
}
type OuterType struct {
InnerType `js:"-"`
SomeField string
AnotherField string `js:"-"`
AnotherField1 string
}
const SCRIPT = `
if (o.SomeField !== "SomeField") {
throw new Error("SomeField");
}
if (o.AnotherField !== "AnotherField inner") {
throw new Error("AnotherField");
}
if (o.AnotherField1 !== "AnotherField1 outer") {
throw new Error("AnotherField1");
}
if (o.InnerType) {
throw new Error("InnerType is present");
}
`
o := OuterType{
InnerType: InnerType{
AnotherField: "AnotherField inner",
AnotherField1: "AnotherField1 inner",
},
SomeField: "SomeField",
AnotherField: "AnotherField outer",
AnotherField1: "AnotherField1 outer",
}
vm := New()
vm.SetFieldNameMapper(testFieldMapper{})
vm.Set("o", &o)
_, err := vm.RunString(SCRIPT)
if err != nil {
t.Fatal(err)
}
}
func TestDefinePropertyUnexportedJsName(t *testing.T) {
type T struct {
Field int
unexported int
}
vm := New()
vm.SetFieldNameMapper(fieldNameMapper1{})
vm.Set("f", &T{unexported: 0})
_, err := vm.RunString(`
"use strict";
Object.defineProperty(f, "field", {value: 42});
if (f.field !== 42) {
throw new Error("Unexpected value: " + f.field);
}
if (f.hasOwnProperty("unexported")) {
throw new Error("hasOwnProperty('unexported') is true");
}
var thrown;
try {
Object.defineProperty(f, "unexported", {value: 1});
} catch (e) {
thrown = e;
}
if (!(thrown instanceof TypeError)) {
throw new Error("Unexpected error: ", thrown);
}
`)
if err != nil {
t.Fatal(err)
}
}
type fieldNameMapperToLower struct{}
func (fieldNameMapperToLower) FieldName(_ reflect.Type, f reflect.StructField) string {
return strings.ToLower(f.Name)
}
func (fieldNameMapperToLower) MethodName(_ reflect.Type, m reflect.Method) string {
return strings.ToLower(m.Name)
}
func TestHasOwnPropertyUnexportedJsName(t *testing.T) {
vm := New()
vm.SetFieldNameMapper(fieldNameMapperToLower{})
vm.Set("f", &testGoReflectMethod_O{})
_, err := vm.RunString(`
"use strict";
if (!f.hasOwnProperty("test")) {
throw new Error("hasOwnProperty('test') returned false");
}
if (!f.hasOwnProperty("method")) {
throw new Error("hasOwnProperty('method') returned false");
}
`)
if err != nil {
t.Fatal(err)
}
}
func BenchmarkGoReflectGet(b *testing.B) {
type parent struct {
field, Test1, Test2, Test3, Test4, Test5, Test string
}
type child struct {
parent
Test6 string
}
b.StopTimer()
vm := New()
b.StartTimer()
for i := 0; i < b.N; i++ {
v := vm.ToValue(child{parent: parent{Test: "Test", field: ""}}).(*Object)
v.Get("Test")
}
}
func TestNestedStructSet(t *testing.T) {
type B struct {
Field int
}
type A struct {
B B
}
const SCRIPT = `
'use strict';
a.B.Field++;
if (a1.B.Field != 1) {
throw new Error("a1.B.Field = " + a1.B.Field);
}
var d = Object.getOwnPropertyDescriptor(a1.B, "Field");
if (!d.writable) {
throw new Error("a1.B is not writable");
}
a1.B.Field = 42;
a1;
`
a := A{
B: B{
Field: 1,
},
}
vm := New()
vm.Set("a", &a)
vm.Set("a1", a)
v, err := vm.RunString(SCRIPT)
if err != nil {
t.Fatal(err)
}
exp := v.Export()
if v, ok := exp.(A); ok {
if v.B.Field != 42 {
t.Fatal(v)
}
} else {
t.Fatalf("Wrong type: %T", exp)
}
if v := a.B.Field; v != 2 {
t.Fatalf("Unexpected a.B.Field: %d", v)
}
}
func TestStructNonAddressableAnonStruct(t *testing.T) {
type C struct {
Z int64
X string
}
type B struct {
C
Y string
}
type A struct {
B B
}
a := A{
B: B{
C: C{
Z: 1,
X: "X2",
},
Y: "Y3",
},
}
const SCRIPT = `
"use strict";
var s = JSON.stringify(a);
s;
`
vm := New()
vm.Set("a", &a)
v, err := vm.RunString(SCRIPT)
if err != nil {
t.Fatal(err)
}
expected := `{"B":{"C":{"Z":1,"X":"X2"},"Z":1,"X":"X2","Y":"Y3"}}`
if expected != v.String() {
t.Fatalf("Expected '%s', got '%s'", expected, v.String())
}
}
func TestTagFieldNameMapperInvalidId(t *testing.T) {
vm := New()
vm.SetFieldNameMapper(TagFieldNameMapper("json", true))
type S struct {
Field int `json:"-"`
}
vm.Set("s", S{Field: 42})
res, err := vm.RunString(`s.hasOwnProperty("field") || s.hasOwnProperty("Field")`)
if err != nil {
t.Fatal(err)
}
if res != valueFalse {
t.Fatalf("Unexpected result: %v", res)
}
}
func TestPrimitivePtr(t *testing.T) {
vm := New()
s := "test"
vm.Set("s", &s)
res, err := vm.RunString(`s instanceof String && s == "test"`) // note non-strict equality
if err != nil {
t.Fatal(err)
}
if v := res.ToBoolean(); !v {
t.Fatalf("value: %#v", res)
}
s = "test1"
res, err = vm.RunString(`s == "test1"`)
if err != nil {
t.Fatal(err)
}
if v := res.ToBoolean(); !v {
t.Fatalf("value: %#v", res)
}
}
func TestStringer(t *testing.T) {
vm := New()
vm.Set("e", errors.New("test"))
res, err := vm.RunString("e.toString()")
if err != nil {
t.Fatal(err)
}
if v := res.Export(); v != "test" {
t.Fatalf("v: %v", v)
}
}
func ExampleTagFieldNameMapper() {
vm := New()
vm.SetFieldNameMapper(TagFieldNameMapper("json", true))
type S struct {
Field int `json:"field"`
}
vm.Set("s", S{Field: 42})
res, _ := vm.RunString(`s.field`)
fmt.Println(res.Export())
// Output: 42
}
func ExampleUncapFieldNameMapper() {
vm := New()
s := testGoReflectMethod_O{
Test: "passed",
}
vm.SetFieldNameMapper(UncapFieldNameMapper())
vm.Set("s", s)
res, _ := vm.RunString(`s.test + " and " + s.method("passed too")`)
fmt.Println(res.Export())
// Output: passed and passed too
}
func TestGoReflectWithProto(t *testing.T) {
type S struct {
Field int
}
var s S
vm := New()
vm.Set("s", &s)
vm.testScriptWithTestLib(`
(function() {
'use strict';
var proto = {
Field: "protoField",
test: 42
};
var test1Holder;
Object.defineProperty(proto, "test1", {
set: function(v) {
test1Holder = v;
},
get: function() {
return test1Holder;
}
});
Object.setPrototypeOf(s, proto);
assert.sameValue(s.Field, 0, "s.Field");
s.Field = 2;
assert.sameValue(s.Field, 2, "s.Field");
assert.sameValue(s.test, 42, "s.test");
assert.throws(TypeError, function() {
Object.defineProperty(s, "test", {value: 43});
});
test1Holder = 1;
assert.sameValue(s.test1, 1, "s.test1");
s.test1 = 2;
assert.sameValue(test1Holder, 2, "test1Holder");
})();
`, _undefined, t)
}
func TestGoReflectSymbols(t *testing.T) {
type S struct {
Field int
}
var s S
vm := New()
vm.Set("s", &s)
_, err := vm.RunString(`
'use strict';
var sym = Symbol(66);
s[sym] = "Test";
if (s[sym] !== "Test") {
throw new Error("s[sym]=" + s[sym]);
}
`)
if err != nil {
t.Fatal(err)
}
}
func TestGoReflectSymbolEqualityQuirk(t *testing.T) {
type Field struct {
}
type S struct {
Field *Field
}
var s = S{
Field: &Field{},
}
vm := New()
vm.Set("s", &s)
res, err := vm.RunString(`
var sym = Symbol(66);
var field1 = s.Field;
field1[sym] = true;
var field2 = s.Field;
// Because a wrapper is created every time the property is accessed
// field1 and field2 will be different instances of the wrapper.
// Symbol properties only exist in the wrapper, they cannot be placed into the original Go value,
// hence the following:
field1 === field2 && field1[sym] === true && field2[sym] === undefined;
`)
if err != nil {
t.Fatal(err)
}
if res != valueTrue {
t.Fatal(res)
}
}
func TestGoObj__Proto__(t *testing.T) {
type S struct {
Field int
}
vm := New()
vm.Set("s", S{})
vm.Set("m", map[string]interface{}{})
vm.Set("mr", map[int]string{})
vm.Set("a", []interface{}{})
vm.Set("ar", []string{})
_, err := vm.RunString(`
function f(s, expectedCtor, prefix) {
if (s.__proto__ !== expectedCtor.prototype) {
throw new Error(prefix + ": __proto__: " + s.__proto__);
}
s.__proto__ = null;
if (s.__proto__ !== undefined) { // as there is no longer a prototype, there is no longer the __proto__ property
throw new Error(prefix + ": __proto__ is not undefined: " + s.__proto__);
}
var proto = Object.getPrototypeOf(s);
if (proto !== null) {
throw new Error(prefix + ": proto is not null: " + proto);
}
}
f(s, Object, "struct");
f(m, Object, "simple map");
f(mr, Object, "reflect map");
f(a, Array, "slice");
f(ar, Array, "reflect slice");
`)
if err != nil {
t.Fatal(err)
}
}
func TestGoReflectUnicodeProps(t *testing.T) {
type S struct {
Тест string
}
vm := New()
var s S
vm.Set("s", &s)
_, err := vm.RunString(`
if (!s.hasOwnProperty("Тест")) {
throw new Error("hasOwnProperty");
}
`)
if err != nil {
t.Fatal(err)
}
}
func TestGoReflectPreserveType(t *testing.T) {
vm := New()
var expect = time.Duration(math.MaxInt64)
vm.Set(`make`, func() time.Duration {
return expect
})
vm.Set(`handle`, func(d time.Duration) {
if d.String() != expect.String() {
t.Fatal(`expect`, expect, `, but get`, d)
}
})
_, e := vm.RunString(`
var d=make()
handle(d)
`)
if e != nil {
t.Fatal(e)
}
}
func TestGoReflectCopyOnWrite(t *testing.T) {
type Inner struct {
Field int
}
type S struct {
I Inner
}
var s S
s.I.Field = 1
vm := New()
vm.Set("s", &s)
_, err := vm.RunString(`
if (s.I.Field !== 1) {
throw new Error("s.I.Field: " + s.I.Field);
}
let tmp = s.I; // tmp becomes a reference to s.I
if (tmp.Field !== 1) {
throw new Error("tmp.Field: " + tmp.Field);
}
s.I.Field = 2;
if (s.I.Field !== 2) {
throw new Error("s.I.Field (1): " + s.I.Field);
}
if (tmp.Field !== 2) {
throw new Error("tmp.Field (1): " + tmp.Field);
}
s.I = {Field: 3}; // at this point tmp is changed to a copy
if (s.I.Field !== 3) {
throw new Error("s.I.Field (2): " + s.I.Field);
}
if (tmp.Field !== 2) {
throw new Error("tmp.Field (2): " + tmp.Field);
}
`)
if err != nil {
t.Fatal(err)
}
}
func TestReflectSetReflectValue(t *testing.T) {
o := []testGoReflectMethod_O{{}}
vm := New()
vm.Set("o", o)
_, err := vm.RunString(`
const t = o[0];
t.Set("a");
o[0] = {};
o[0].Set("b");
if (t.Get() !== "a") {
throw new Error();
}
`)
if err != nil {
t.Fatal(err)
}
}
func TestReflectOverwriteReflectMap(t *testing.T) {
vm := New()
type S struct {
M map[int]interface{}
}
var s S
s.M = map[int]interface{}{
0: true,
}
vm.Set("s", &s)
_, err := vm.RunString(`
s.M = {1: false};
`)
if err != nil {
t.Fatal(err)
}
if _, exists := s.M[0]; exists {
t.Fatal(s)
}
}
type testBoolS bool
func (testBoolS) String() string {
return "B"
}
type testIntS int
func (testIntS) String() string {
return "I"
}
type testStringS string
func (testStringS) String() string {
return "S"
}
func TestGoReflectToPrimitive(t *testing.T) {
vm := New()
f := func(expr string, expected Value, t *testing.T) {
v, err := vm.RunString(expr)
if err != nil {
t.Fatal(err)
}
if IsNaN(expected) {
if IsNaN(v) {
return
}
} else {
if v.StrictEquals(expected) {
return
}
}
t.Fatalf("%s: expected: %v, actual: %v", expr, expected, v)
}
t.Run("Not Stringers", func(t *testing.T) {
type Bool bool
var b Bool = true
t.Run("Bool", func(t *testing.T) {
vm.Set("b", b)
f("+b", intToValue(1), t)
f("`${b}`", asciiString("true"), t)
f("b.toString()", asciiString("true"), t)
f("b.valueOf()", valueTrue, t)
})
t.Run("*Bool", func(t *testing.T) {
vm.Set("b", &b)
f("+b", intToValue(1), t)
f("`${b}`", asciiString("true"), t)
f("b.toString()", asciiString("true"), t)
f("b.valueOf()", valueTrue, t)
})
type Int int
var i Int = 1
t.Run("Int", func(t *testing.T) {
vm.Set("i", i)
f("+i", intToValue(1), t)
f("`${i}`", asciiString("1"), t)
f("i.toString()", asciiString("1"), t)
f("i.valueOf()", intToValue(1), t)
})
t.Run("*Int", func(t *testing.T) {
vm.Set("i", &i)
f("+i", intToValue(1), t)
f("`${i}`", asciiString("1"), t)
f("i.toString()", asciiString("1"), t)
f("i.valueOf()", intToValue(1), t)
})
type Uint uint
var ui Uint = 1
t.Run("Uint", func(t *testing.T) {
vm.Set("ui", ui)
f("+ui", intToValue(1), t)
f("`${ui}`", asciiString("1"), t)
f("ui.toString()", asciiString("1"), t)
f("ui.valueOf()", intToValue(1), t)
})
t.Run("*Uint", func(t *testing.T) {
vm.Set("ui", &i)
f("+ui", intToValue(1), t)
f("`${ui}`", asciiString("1"), t)
f("ui.toString()", asciiString("1"), t)
f("ui.valueOf()", intToValue(1), t)
})
type Float float64
var fl Float = 1.1
t.Run("Float", func(t *testing.T) {
vm.Set("fl", fl)
f("+fl", floatToValue(1.1), t)
f("`${fl}`", asciiString("1.1"), t)
f("fl.toString()", asciiString("1.1"), t)
f("fl.valueOf()", floatToValue(1.1), t)
})
t.Run("*Float", func(t *testing.T) {
vm.Set("fl", &fl)
f("+fl", floatToValue(1.1), t)
f("`${fl}`", asciiString("1.1"), t)
f("fl.toString()", asciiString("1.1"), t)
f("fl.valueOf()", floatToValue(1.1), t)
})
fl = Float(math.Inf(1))
t.Run("FloatInf", func(t *testing.T) {
vm.Set("fl", fl)
f("+fl", _positiveInf, t)
f("fl.toString()", asciiString("Infinity"), t)
})
type Empty struct{}
var e Empty
t.Run("Empty", func(t *testing.T) {
vm.Set("e", &e)
f("+e", _NaN, t)
f("`${e}`", asciiString("[object Object]"), t)
f("e.toString()", asciiString("[object Object]"), t)
f("e.valueOf()", vm.ToValue(&e), t)
})
})
t.Run("Stringers", func(t *testing.T) {
var b testBoolS = true
t.Run("Bool", func(t *testing.T) {
vm.Set("b", b)
f("`${b}`", asciiString("B"), t)
f("b.toString()", asciiString("B"), t)
f("b.valueOf()", valueTrue, t)
f("+b", intToValue(1), t)
})
t.Run("*Bool", func(t *testing.T) {
vm.Set("b", &b)
f("`${b}`", asciiString("B"), t)
f("b.toString()", asciiString("B"), t)
f("b.valueOf()", valueTrue, t)
f("+b", intToValue(1), t)
})
var i testIntS = 1
t.Run("Int", func(t *testing.T) {
vm.Set("i", i)
f("`${i}`", asciiString("I"), t)
f("i.toString()", asciiString("I"), t)
f("i.valueOf()", intToValue(1), t)
f("+i", intToValue(1), t)
})
t.Run("*Int", func(t *testing.T) {
vm.Set("i", &i)
f("`${i}`", asciiString("I"), t)
f("i.toString()", asciiString("I"), t)
f("i.valueOf()", intToValue(1), t)
f("+i", intToValue(1), t)
})
var s testStringS
t.Run("String", func(t *testing.T) {
vm.Set("s", s)
f("`${s}`", asciiString("S"), t)
f("s.toString()", asciiString("S"), t)
f("s.valueOf()", asciiString("S"), t)
f("+s", _NaN, t)
})
t.Run("*String", func(t *testing.T) {
vm.Set("s", &s)
f("`${s}`", asciiString("S"), t)
f("s.toString()", asciiString("S"), t)
f("s.valueOf()", asciiString("S"), t)
f("+s", _NaN, t)
})
})
}
type testGoReflectFuncRt struct {
}
func (*testGoReflectFuncRt) M(call FunctionCall, r *Runtime) Value {
if r == nil {
panic(typeError("Runtime is nil"))
}
return call.Argument(0)
}
func (*testGoReflectFuncRt) C(call ConstructorCall, r *Runtime) *Object {
if r == nil {
panic(typeError("Runtime is nil in constructor"))
}
call.This.Set("r", call.Argument(0))
return nil
}
func TestGoReflectFuncWithRuntime(t *testing.T) {
vm := New()
var s testGoReflectFuncRt
vm.Set("s", &s)
res, err := vm.RunString("s.M(true)")
if err != nil {
t.Fatal(err)
}
if res != valueTrue {
t.Fatal(res)
}
res, err = vm.RunString("new s.C(true).r")
if err != nil {
t.Fatal(err)
}
if res != valueTrue {
t.Fatal(res)
}
}
func TestGoReflectDefaultToString(t *testing.T) {
var s testStringS
vm := New()
v := vm.ToValue(s).(*Object)
v.Delete("toString")
v.Delete("valueOf")
vm.Set("s", v)
_, err := vm.RunString(`
class S {
toString() {
return "X";
}
}
if (s.toString() !== "S") {
throw new Error(s.toString());
}
if (("" + s) !== "S") {
throw new Error("" + s);
}
Object.setPrototypeOf(s, S.prototype);
if (s.toString() !== "X") {
throw new Error(s.toString());
}
if (("" + s) !== "X") {
throw new Error("" + s);
}
`)
if err != nil {
t.Fatal(err)
}
}
func TestGoReflectUnexportedEmbedStruct(t *testing.T) {
type privateEmbed struct {
A string
}
type PublicEmbed struct {
B string
}
type privateNested struct {
C string
}
type PublicNested struct {
D string
}
type Foo struct {
privateEmbed
PublicEmbed
privateNested privateNested
PublicNested PublicNested
e string
F string
}
vm := New()
vm.Set("foo", Foo{
privateEmbed: privateEmbed{A: "testA"},
PublicEmbed: PublicEmbed{B: "testB"},
privateNested: privateNested{C: "testC"},
PublicNested: PublicNested{D: "testD"},
e: "testE",
F: "testF",
})
scenarios := []struct {
expr string
expected string
}{
{"foo.privateEmbed", "undefined"},
{"foo.A", "testA"},
// ---
{"foo.PublicEmbed", "[object Object]"},
{"foo.B", "testB"},
{"foo.PublicEmbed.B", "testB"},
// ---
{"foo.privateNested", "undefined"},
{"foo.C", "undefined"},
// ---
{"foo.PublicNested", "[object Object]"},
{"foo.D", "undefined"},
{"foo.PublicNested.D", "testD"},
// ---
{"foo.e", "undefined"},
{"foo.F", "testF"},
}
for _, s := range scenarios {
t.Run(s.expr, func(t *testing.T) {
v, err := vm.RunString(s.expr)
if err != nil {
t.Fatal(err)
}
vStr := v.String()
if vStr != s.expected {
t.Fatalf("Expected %q, got %q", s.expected, vStr)
}
})
}
}