Improve test coverage

config/config_test.go

@@ -298,3 +298,10 @@ func TestLoadFileThatDoesNotExist(t *testing.T) {
 		t.Error("Should've returned an error, because the file specified doesn't exist")
 	}
 }
+
+func TestLoadDefaultConfigurationFile(t *testing.T) {
+	err := LoadDefaultConfiguration()
+	if err == nil {
+		t.Error("Should've returned an error, because there's no configuration files at the default path nor the default fallback path")
+	}
+}

core/service_test.go

@@ -49,6 +49,7 @@ func TestService_ValidateAndSetDefaults(t *testing.T) {
 		Name:       "TwiNNatioN",
 		Url:        "https://twinnation.org/health",
 		Conditions: []*Condition{&condition},
+		Alerts:     []*Alert{{Type: PagerDutyAlert}},
 	}
 	service.ValidateAndSetDefaults()
 	if service.Method != "GET" {
@@ -60,4 +61,16 @@ func TestService_ValidateAndSetDefaults(t *testing.T) {
 	if service.Headers == nil {
 		t.Error("Service headers should've defaulted to an empty map")
 	}
+	if len(service.Alerts) != 1 {
+		t.Error("Service should've had 1 alert")
+	}
+	if service.Alerts[0].Enabled {
+		t.Error("Service alert should've defaulted to disabled")
+	}
+	if service.Alerts[0].SuccessThreshold != 2 {
+		t.Error("Service alert should've defaulted to a success threshold of 2")
+	}
+	if service.Alerts[0].FailureThreshold != 3 {
+		t.Error("Service alert should've defaulted to a failure threshold of 3")
+	}
 }