Function TestDefaultContainer_ResolveAs

component/container_test.go:1064–1127

(t *testing.T)

}

func TestDefaultContainer_ResolveAs(t *testing.T) {
	var testCases = []struct {
		name         string
		ctx          context.Context
		preCondition func(container Container)
		instanceName string
		instanceType reflect.Type

		wantErr error
	}{
		{
			name:         "empty name",
			wantErr:      errors.New("empty name"),
			instanceName: "",
		},
		{
			name:         "nil type",
			wantErr:      errors.New("nil type"),
			instanceName: "anyInstanceName",
			instanceType: nil,
		},
		{
			name: "assignable type",
			preCondition: func(container Container) {
				_ = container.RegisterSingleton("anyInstanceName", AnyComponent{})
			},
			instanceName: "anyInstanceName",
			instanceType: reflect.TypeFor[AnyComponent](),
			wantErr:      nil,
		},
		{
			name: "not assignable type",
			preCondition: func(container Container) {
				_ = container.RegisterSingleton("anyInstanceName", AnyComponent{})
			},
			instanceName: "anyInstanceName",
			instanceType: reflect.TypeFor[AnotherComponent](),
			wantErr:      errors.New("component \"anyInstanceName\" is not assignable to component.AnotherComponent"),
		},
	}

	for _, tc := range testCases {
		t.Run(tc.name, func(t *testing.T) {
			// given
			container := NewDefaultContainer()
			if tc.preCondition != nil {
				tc.preCondition(container)
			}

			result, err := container.ResolveAs(tc.ctx, tc.instanceName, tc.instanceType)
			// when

			// then
			if tc.wantErr != nil {
				require.Error(t, err)
				require.EqualError(t, err, tc.wantErr.Error())
				return
			}