Function TestContainsNotContainsFailMessage

assert/assertions_test.go:1102–1158

(t *testing.T)

}

func TestContainsNotContainsFailMessage(t *testing.T) {
	t.Parallel()

	mockT := new(mockTestingT)

	type nonContainer struct {
		Value string
	}

	cases := []struct {
		assertion func(t TestingT, s, contains interface{}, msgAndArgs ...interface{}) bool
		container interface{}
		instance  interface{}
		expected  string
	}{
		{
			assertion: Contains,
			container: "Hello World",
			instance:  errors.New("Hello"),
			expected:  "\"Hello World\" does not contain &errors.errorString{s:\"Hello\"}",
		},
		{
			assertion: Contains,
			container: map[string]int{"one": 1},
			instance:  "two",
			expected:  "map[string]int{\"one\":1} does not contain \"two\"\n",
		},
		{
			assertion: NotContains,
			container: map[string]int{"one": 1},
			instance:  "one",
			expected:  "map[string]int{\"one\":1} should not contain \"one\"",
		},
		{
			assertion: Contains,
			container: nonContainer{Value: "Hello"},
			instance:  "Hello",
			expected:  "assert.nonContainer{Value:\"Hello\"} could not be applied builtin len()\n",
		},
		{
			assertion: NotContains,
			container: nonContainer{Value: "Hello"},
			instance:  "Hello",
			expected:  "assert.nonContainer{Value:\"Hello\"} could not be applied builtin len()\n",
		},
	}
	for _, c := range cases {
		name := filepath.Base(runtime.FuncForPC(reflect.ValueOf(c.assertion).Pointer()).Name())
		t.Run(fmt.Sprintf("%v(%T, %T)", name, c.container, c.instance), func(t *testing.T) {
			c.assertion(mockT, c.container, c.instance)
			actualFail := mockT.errorString()
			if !strings.Contains(actualFail, c.expected) {
				t.Errorf("Contains failure should include %q but was %q", c.expected, actualFail)
			}
		})
	}
}