object_goslice_reflect_test.go

package goja

import "testing"

func TestGoSliceReflectBasic(t *testing.T) {
	const SCRIPT = `
	var sum = 0;
	for (var i = 0; i < a.length; i++) {
		sum += a[i];
	}
	sum;
	`
	r := New()
	r.Set("a", []int{1, 2, 3, 4})
	v, err := r.RunString(SCRIPT)
	if err != nil {
		t.Fatal(err)
	}
	if i := v.ToInteger(); i != 10 {
		t.Fatalf("Expected 10, got: %d", i)
	}

}

func TestGoSliceReflectIn(t *testing.T) {
	const SCRIPT = `
	var idx = "";
	for (var i in a) {
		idx += i;
	}
	idx;
	`
	r := New()
	r.Set("a", []int{1, 2, 3, 4})
	v, err := r.RunString(SCRIPT)
	if err != nil {
		t.Fatal(err)
	}
	if i := v.String(); i != "0123" {
		t.Fatalf("Expected '0123', got: '%s'", i)
	}
}

func TestGoSliceReflectSet(t *testing.T) {
	const SCRIPT = `
	a[0] = 33;
	a[1] = 333;
	a[2] = "42";
	a[3] = {};
	a[4] = 0;
	`
	r := New()
	a := []int8{1, 2, 3, 4}
	r.Set("a", a)
	_, err := r.RunString(SCRIPT)
	if err != nil {
		t.Fatal(err)
	}

	if a[0] != 33 {
		t.Fatalf("a[0] = %d, expected 33", a[0])
	}
	if a[1] != 77 {
		t.Fatalf("a[1] = %d, expected 77", a[0])
	}
	if a[2] != 42 {
		t.Fatalf("a[2] = %d, expected 42", a[0])
	}
	if a[3] != 0 {
		t.Fatalf("a[3] = %d, expected 0", a[0])
	}
}

func TestGoSliceReflectPush(t *testing.T) {

	r := New()

	t.Run("Can push to array by array ptr", func(t *testing.T) {
		a := []int8{1}
		r.Set("a", &a)
		_, err := r.RunString(`a.push (10)`)
		if err != nil {
			t.Fatal(err)
		}

		if a[1] != 10 {
			t.Fatalf("a[1] = %d, expected 10", a[1])
		}
	})

	t.Run("Can push to array by struct ptr", func(t *testing.T) {
		type testStr struct {
			A []int
		}
		a := testStr{
			A: []int{2},
		}

		r.Set("a", &a)
		_, err := r.RunString(`a.A.push (10)`)
		if err != nil {
			t.Fatal(err)
		}

		if a.A[1] != 10 {
			t.Fatalf("a[1] = %v, expected 10", a)
		}
	})

}

func TestGoSliceReflectProto(t *testing.T) {
	const SCRIPT = `
	a.join(",")
	`

	r := New()
	a := []int8{1, 2, 3, 4}
	r.Set("a", a)
	ret, err := r.RunString(SCRIPT)
	if err != nil {
		t.Fatal(err)
	}
	if s := ret.String(); s != "1,2,3,4" {
		t.Fatalf("Unexpected result: '%s'", s)
	}
}

type gosliceReflect_withMethods []interface{}

func (s gosliceReflect_withMethods) Method() bool {
	return true
}

func TestGoSliceReflectMethod(t *testing.T) {
	const SCRIPT = `
	typeof a === "object" && a[0] === 42 && a.Method() === true;
	`

	vm := New()
	a := make(gosliceReflect_withMethods, 1)
	a[0] = 42
	vm.Set("a", a)
	v, err := vm.RunString(SCRIPT)
	if err != nil {
		t.Fatal(err)
	}
	if !v.StrictEquals(valueTrue) {
		t.Fatalf("Expected true, got %v", v)
	}

}

func TestGoSliceReflectGetStr(t *testing.T) {
	r := New()
	v := r.ToValue([]string{"test"})
	if o, ok := v.(*Object); ok {
		if e := o.Get("0").Export(); e != "test" {
			t.Fatalf("Unexpected o.Get(\"0\"): %v", e)
		}
	}
}