package validate import ( "testing" ) func TestIn(t *testing.T) { type TestCase[T comparable] struct { Input T A []T Err error } strIn := []string{"abcd", "ef", "1234"} strTestCases := []TestCase[string]{ {Input: "abcd", A: strIn}, {Input: "ef", A: strIn}, {Input: "1234", A: strIn}, {Input: "5678", A: strIn, Err: ErrValueNotAllowed}, } for _, tc := range strTestCases { t.Logf("Testing %q against %v", tc.Input, tc.A) f := In(tc.A...) err := f(tc.Input) if err != tc.Err { t.Errorf("Expected error %v, got %v", tc.Err, err) } } intIn := []int{1, 23, 456} intTestCases := []TestCase[int]{ {Input: 1, A: intIn}, {Input: 23, A: intIn}, {Input: 456, A: intIn}, {Input: 789, A: intIn, Err: ErrValueNotAllowed}, } for _, tc := range intTestCases { t.Logf("Testing %d against %v", tc.Input, tc.A) f := In(tc.A...) err := f(tc.Input) if err != tc.Err { t.Errorf("Expected error %v, got %v", tc.Err, err) } } }