chore: add logger test (#55)

* chore: add logger test

* chore: fix linting

* chore: add README badge

README.md

@@ -2,6 +2,7 @@
 
 ![Latest release](https://img.shields.io/github/v/release/QuokkaStake/cosmos-transactions-bot)
 [![Actions Status](https://github.com/QuokkaStake/cosmos-transactions-bot/workflows/test/badge.svg)](https://github.com/QuokkaStake/cosmos-transactions-bot/actions)
+[![codecov](https://codecov.io/gh/QuokkaStake/cosmos-transactions-bot/graph/badge.svg?token=NDKDV02PC1)](https://codecov.io/gh/QuokkaStake/cosmos-transactions-bot)
 
 cosmos-transactions-bot is a tool that listens to transactions with a specific filter on multiple chains
 and reports them to a Telegram channel.

pkg/logger/logger.go

@@ -22,7 +22,7 @@ func GetLogger(config config.LogConfig) *zerolog.Logger {
 
 	logLevel, err := zerolog.ParseLevel(config.LogLevel)
 	if err != nil {
-		log.Fatal().Err(err).Msg("Could not parse log level")
+		log.Panic().Err(err).Msg("Could not parse log level")
 	}
 
 	zerolog.SetGlobalLevel(logLevel)

pkg/logger/logger_test.go

@@ -0,0 +1,42 @@
+package logger_test
+
+import (
+	configPkg "main/pkg/config"
+	loggerPkg "main/pkg/logger"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestGetDefaultLogger(t *testing.T) {
+	t.Parallel()
+
+	logger := loggerPkg.GetDefaultLogger()
+	require.NotNil(t, logger)
+}
+
+func TestGetLoggerInvalidLogLevel(t *testing.T) {
+	t.Parallel()
+
+	defer func() {
+		if r := recover(); r == nil {
+			require.Fail(t, "Expected to have a panic here!")
+		}
+	}()
+
+	loggerPkg.GetLogger(configPkg.LogConfig{LogLevel: "invalid"})
+}
+
+func TestGetLoggerValidPlain(t *testing.T) {
+	t.Parallel()
+
+	logger := loggerPkg.GetLogger(configPkg.LogConfig{LogLevel: "info"})
+	require.NotNil(t, logger)
+}
+
+func TestGetLoggerValidJSON(t *testing.T) {
+	t.Parallel()
+
+	logger := loggerPkg.GetLogger(configPkg.LogConfig{LogLevel: "info", JSONOutput: true})
+	require.NotNil(t, logger)
+}