add test for empty object

Author: drlau

notifier/github/client_test.go

@@ -212,6 +212,10 @@ func TestHasAnyLabelDefined(t *testing.T) {
 			},
 			want: false,
 		},
+		{
+			rl: ResultLabels{},
+			want: false,
+		},
 	}
 	for _, testCase := range testCases {
 		if testCase.rl.HasAnyLabelDefined() != testCase.want {
@@ -266,6 +270,11 @@ func TestIsResultLabels(t *testing.T) {
 			label: "",
 			want:  false,
 		},
+		{
+			rl: ResultLabels{},
+			label: "",
+			want:  false,
+		},
 	}
 	for _, testCase := range testCases {
 		if testCase.rl.IsResultLabel(testCase.label) != testCase.want {