fix: sheriff.toml config should be optional (#37)

Author: scastlara

internal/config/patrol.go

@@ -66,8 +66,9 @@ func GetPatrolConfiguration(cliOpts PatrolCLIOpts) (config PatrolConfig, err err
 	if cliOpts.Config != "" {
 		found, err := getTOMLFile(cliOpts.Config, &tomlOpts)
 		if !found {
-			return config, fmt.Errorf("failed to find configuration file %v", cliOpts.Config)
-		} else if err != nil {
+			zerolog.Info().Msg("No configuration file found, running with CLI options only")
+		}
+		if err != nil {
 			return config, errors.Join(errors.New("failed to parse patrol configuration file"), err)
 		}
 

internal/config/patrol_test.go

@@ -73,7 +73,8 @@ func TestGetPatrolConfigurationInexistentFile(t *testing.T) {
 		Verbose: true,
 	})
 
-	assert.NotNil(t, err)
+	// It is allowed to run sheriff without a configuration file
+	assert.Nil(t, err)
 }
 
 func TestParseUrls(t *testing.T) {