Function TestModuleBuilder_Import

module_test.go:406–492

============================================================================= MODULE IMPORT TESTS =============================================================================

(t *testing.T)

// =============================================================================

func TestModuleBuilder_Import(t *testing.T) {
	useStableOwnerHooksForLegacySubtests(t)

	rt := NewRuntime()
	defer rt.Close()
	ctx := rt.NewContext()
	defer ctx.Close()

	t.Run("NamedImports", func(t *testing.T) {
		greetFunc := ctx.NewFunction(func(ctx *Context, this *Value, args []*Value) *Value {
			name := "World"
			if len(args) > 0 {
				name = args[0].ToString()
			}
			return ctx.NewString(fmt.Sprintf("Hello, %s!", name))
		})

		module := NewModuleBuilder("greeting").
			Export("greet", greetFunc).
			Export("defaultName", ctx.NewString("World"))

		err := module.Build(ctx)
		require.NoError(t, err)

		result := ctx.Eval(`
            (async function() {
                const { greet, defaultName } = await import('greeting');
                return greet('QuickJS');
            })()
        `, EvalAwait(true))
		defer result.Free()

		require.False(t, result.IsException())
		require.Equal(t, "Hello, QuickJS!", result.ToString())
	})

	t.Run("FunctionImports", func(t *testing.T) {
		calculateFunc := ctx.NewFunction(func(ctx *Context, this *Value, args []*Value) *Value {
			if len(args) >= 2 {
				a, b := args[0].ToFloat64(), args[1].ToFloat64()
				return ctx.NewFloat64(a * b)
			}
			return ctx.NewFloat64(0)
		})

		module := NewModuleBuilder("calculator").
			Export("multiply", calculateFunc).
			Export("PI", ctx.NewFloat64(3.14159))

		err := module.Build(ctx)
		require.NoError(t, err)

		result := ctx.Eval(`
            (async function() {
                const { multiply, PI } = await import('calculator');
                return multiply(PI, 2);
            })()
        `, EvalAwait(true))