fixed error on invalid config path (#250)

acceptanceTests/tap_test.go

@@ -71,7 +71,6 @@ func TestTapAndFetch(t *testing.T) {
 				}
 
 				entries := requestResult.([]interface{})
-
 				if len(entries) == 0 {
 					return fmt.Errorf("unexpected entries result - Expected more than 0 entries")
 				}
@@ -523,6 +522,10 @@ func TestTapRedact(t *testing.T) {
 		}
 
 		entries := requestResult.([]interface{})
+		if len(entries) == 0 {
+			return fmt.Errorf("unexpected entries result - Expected more than 0 entries")
+		}
+
 		firstEntry :=  entries[0].(map[string]interface{})
 
 		entryUrl := fmt.Sprintf("%v/api/entries/%v", apiServerUrl, firstEntry["id"])
@@ -625,6 +628,10 @@ func TestTapNoRedact(t *testing.T) {
 		}
 
 		entries := requestResult.([]interface{})
+		if len(entries) == 0 {
+			return fmt.Errorf("unexpected entries result - Expected more than 0 entries")
+		}
+
 		firstEntry :=  entries[0].(map[string]interface{})
 
 		entryUrl := fmt.Sprintf("%v/api/entries/%v", apiServerUrl, firstEntry["id"])
@@ -727,6 +734,10 @@ func TestTapRegexMasking(t *testing.T) {
 		}
 
 		entries := requestResult.([]interface{})
+		if len(entries) == 0 {
+			return fmt.Errorf("unexpected entries result - Expected more than 0 entries")
+		}
+
 		firstEntry :=  entries[0].(map[string]interface{})
 
 		entryUrl := fmt.Sprintf("%v/api/entries/%v", apiServerUrl, firstEntry["id"])

cli/config/config.go

@@ -37,11 +37,14 @@ func InitConfig(cmd *cobra.Command) error {
 		return err
 	}
 
-	configFilePath := cmd.Flags().Lookup(ConfigFilePathCommandName).Value.String()
+	configFilePathFlag := cmd.Flags().Lookup(ConfigFilePathCommandName)
-
+	configFilePath := configFilePathFlag.Value.String()
 	if err := mergeConfigFile(configFilePath); err != nil {
-		return fmt.Errorf("invalid config, %w\n"+
+		_, isPathError := err.(*os.PathError)
-			"you can regenerate the file by removing it (%v) and using `mizu config -r`", err, configFilePath)
+		if configFilePathFlag.Changed || !isPathError {
+			return fmt.Errorf("invalid config, %w\n"+
+				"you can regenerate the file by removing it (%v) and using `mizu config -r`", err, configFilePath)
+		}
 	}
 
 	cmd.Flags().Visit(initFlag)
@@ -67,7 +70,7 @@ func GetConfigWithDefaults() (string, error) {
 func mergeConfigFile(configFilePath string) error {
 	reader, openErr := os.Open(configFilePath)
 	if openErr != nil {
-		return nil
+		return openErr
 	}
 
 	buf, readErr := ioutil.ReadAll(reader)