tests(validation): add validation tests

probes_test.go

@@ -15,7 +15,100 @@ func getStatusFromEndpoint(t *testing.T, client *http.Client, endpoint string) i
 	return resp.StatusCode
 }
 
-func TestKubeprobes(t *testing.T) {
+func TestValidation(t *testing.T) {
+	var (
+		live  = NewStatefulProbe()
+		ready = NewStatefulProbe()
+	)
+
+	tests := map[string]struct {
+		opts          []Option
+		expectedError bool
+	}{
+		"no modifications and no error": {
+			opts: []Option{
+				WithLivenessStatefulProbes(live),
+				WithReadinessStatefulProbes(ready),
+			},
+		},
+		"modifications and no error": {
+			opts: []Option{
+				WithLivenessStatefulProbes(live),
+				WithReadinessStatefulProbes(ready),
+				WithLivenessPath("/livez"),
+				WithReadinessPath("/readyz"),
+			},
+		},
+		"missing liveness probes": {
+			opts: []Option{
+				WithReadinessStatefulProbes(ready),
+			},
+			expectedError: true,
+		},
+		"missing readiness probes": {
+			opts: []Option{
+				WithLivenessStatefulProbes(live),
+			},
+			expectedError: true,
+		},
+		"liveness probe path empty": {
+			opts: []Option{
+				WithLivenessStatefulProbes(live),
+				WithReadinessStatefulProbes(ready),
+				WithLivenessPath(""),
+			},
+			expectedError: true,
+		},
+		"readiness probe path empty": {
+			opts: []Option{
+				WithLivenessStatefulProbes(live),
+				WithReadinessStatefulProbes(ready),
+				WithReadinessPath(""),
+			},
+			expectedError: true,
+		},
+		"liveness probe path does not start with slash": {
+			opts: []Option{
+				WithLivenessStatefulProbes(live),
+				WithReadinessStatefulProbes(ready),
+				WithLivenessPath("livez"),
+			},
+			expectedError: true,
+		},
+		"readiness probe path does not start with slash": {
+			opts: []Option{
+				WithLivenessStatefulProbes(live),
+				WithReadinessStatefulProbes(ready),
+				WithReadinessPath("readyz"),
+			},
+			expectedError: true,
+		},
+		"liveness and readiness probe paths are equal": {
+			opts: []Option{
+				WithLivenessStatefulProbes(live),
+				WithReadinessStatefulProbes(ready),
+				WithLivenessPath("/check"),
+				WithReadinessPath("/check"),
+			},
+			expectedError: true,
+		},
+	}
+
+	for name, tc := range tests {
+		name, tc := name, tc
+		t.Run(name, func(t *testing.T) {
+			_, err := New(tc.opts...)
+			switch {
+			case err == nil && tc.expectedError:
+				t.Error("expected error, but no error was returned")
+			case err != nil && !tc.expectedError:
+				t.Errorf("expected no error but got %v", err)
+			}
+		})
+	}
+}
+
+func TestHandler(t *testing.T) {
 	live, ready := NewStatefulProbe(), NewStatefulProbe()
 
 	tests := map[string]struct {
@@ -50,10 +143,13 @@ func TestKubeprobes(t *testing.T) {
 		},
 	}
 
-	kp, _ := New(
+	kp, err := New(
 		WithLivenessStatefulProbes(live),
 		WithReadinessStatefulProbes(ready),
 	)
+	if err != nil {
+		t.Errorf("expected no error, got %v", err)
+	}
 
 	srv := httptest.NewServer(kp)
 	defer srv.Close()