Function TestInheritanceAndNewTarget

class_test.go:681–741

TestInheritanceAndNewTarget tests inheritance support with new.target

(t *testing.T)

// TestInheritanceAndNewTarget tests inheritance support with new.target
func TestInheritanceAndNewTarget(t *testing.T) {
	rt := NewRuntime()
	defer rt.Close()

	context := rt.NewContext()
	defer context.Close()

	// Create and register Point class
	pointConstructor, _ := createPointClass(context)
	if pointConstructor.IsException() {
		defer pointConstructor.Free()
		err := context.Exception()
		t.Fatalf("Failed to create Point class: %v", err)
	}

	// Register Point class globally
	// Note: Globals will manage the memory automatically
	context.Globals().Set("Point", pointConstructor)

	// Test inheritance using extends
	result := context.Eval(`
        class Point3D extends Point {
            constructor(x, y, z) {
                super(x, y);
                this.z = z || 0;
            }

            norm() {
                return Math.sqrt(this.x * this.x + this.y * this.y + this.z * this.z);
            }
        }

        let p3d1 = new Point3D(3, 4, 12);
        p3d1.norm(); // sqrt(3^2 + 4^2 + 12^2) = sqrt(169) = 13
    `)
	defer result.Free()
	if result.IsException() {
		err := context.Exception()
		t.Fatalf("Failed to evaluate inheritance test: %v", err)
	}

	expected := 13.0                                   // sqrt(9 + 16 + 144) = 13
	if math.Abs(result.ToFloat64()-expected) > 0.001 { // Updated: Use ToFloat64()
		t.Errorf("Expected 3D norm 13.0, got %f", result.ToFloat64())
	}

	// Test that inherited object is still instance of Point
	result2 := context.Eval(`
        let p3d2 = new Point3D(1, 2, 3);
        p3d2 instanceof Point;
    `)
	defer result2.Free()
	if result2.IsException() {
		err := context.Exception()
		t.Fatalf("Failed to evaluate instanceof test: %v", err)
	}

	if !result2.ToBool() { // Updated: Use ToBool()