cover more lines

.gitignore

@@ -13,4 +13,5 @@ vendor/
 *.test
 
 # Output of the go coverage tool, specifically when used with LiteIDE
-*.out
+*.out
+coverage.txt

go.mod

@@ -10,6 +10,7 @@ require (
 	github.com/mattn/go-isatty v0.0.14 // indirect
 	github.com/prometheus/client_golang v1.11.0
 	github.com/spf13/pflag v1.0.5
+	github.com/stretchr/testify v1.7.0
 	go.uber.org/atomic v1.9.0 // indirect
 	go.uber.org/multierr v1.7.0 // indirect
 	go.uber.org/zap v1.20.0

internal/logging/logging_test.go

@@ -1,13 +1,11 @@
 package logging
 
 import (
-	"go.uber.org/zap"
+	"github.com/stretchr/testify/assert"
 	"testing"
 )
 
 func TestGetLogger(t *testing.T) {
-	_, err := zap.NewProduction()
-	if err != nil {
-		t.Errorf("%v\n", err.Error())
-	}
+	logger := GetLogger()
+	assert.NotNil(t, logger)
 }

internal/metrics/metrics_test.go

@@ -1,30 +1,15 @@
 package metrics
 
 import (
-	"fmt"
-	"net/http"
 	"testing"
 	"time"
-
-	"github.com/gorilla/mux"
-	"github.com/prometheus/client_golang/prometheus/promhttp"
-	"go.uber.org/zap"
 )
 
 func TestRunMetricsServer(t *testing.T) {
 	errChan := make(chan error, 1)
 
 	go func() {
-		router := mux.NewRouter()
-		metricServer := &http.Server{
-			Handler:      router,
-			Addr:         fmt.Sprintf(":%d", opts.MetricsPort),
-			WriteTimeout: time.Duration(int32(opts.WriteTimeoutSeconds)) * time.Second,
-			ReadTimeout:  time.Duration(int32(opts.ReadTimeoutSeconds)) * time.Second,
-		}
-		router.Handle("/metrics", promhttp.Handler())
-		logger.Info("starting metrics server", zap.Int("port", opts.MetricsPort))
-		errChan <- metricServer.ListenAndServe()
+		errChan <- RunMetricsServer()
 	}()
 
 	for {

internal/options/options_test.go

@@ -0,0 +1,14 @@
+package options
+
+import (
+	"github.com/stretchr/testify/assert"
+	"testing"
+)
+
+// TestGetOreillyTrialOptions function tests if GetOreillyTrialOptions function running properly
+func TestGetVarnishCacheInvalidatorOptions(t *testing.T) {
+	t.Log("fetching default options.VarnishCacheInvalidatorOptions")
+	opts := GetVarnishCacheInvalidatorOptions()
+	assert.NotNil(t, opts)
+	t.Logf("fetched default options.VarnishCacheInvalidatorOptions, %v\n", opts)
+}