Move config file reading to another function for testing

main.go

@@ -3,8 +3,6 @@ package main
 import (
 	"flag"
 	"fmt"
-	"gopkg.in/yaml.v3"
-	"io"
 	"log"
 	"os"
 	"path"
@@ -39,53 +37,8 @@ func main() {
 		Errors:    make([]*Error, 0),
 		RWMutex:   new(sync.RWMutex),
 	}
-	// if config_file is default, see if there's an `.ls-lint.yaml` file instead
-	if *config_file == ".ls-lint.yml" {
-		files, err := os.ReadDir(cwd)
-		if err != nil {
-			log.Fatal(err)
-		}
 
-		for _, file := range files {
-			match, match_err := path.Match(".ls-lint.y*ml", file.Name())
-			if match_err != nil {
-				log.Fatal(match_err)
-			}
-			if match {
-				*config_file = file.Name()
-				break
-			}
-		}
-	}
-	// open config file
-	file, err := os.Open(*config_file)
-
-	if err != nil {
-		log.Fatal(err)
-	}
-
-	// close file
-	defer func() {
-		err = file.Close()
-
-		if err != nil {
-			log.Fatal(err)
-		}
-	}()
-
-	// read file
-	configBytes, err := io.ReadAll(file)
-
-	if err != nil {
-		log.Fatal(err)
-	}
-
-	// to yaml
-	err = yaml.Unmarshal(configBytes, &config)
-
-	if err != nil {
-		log.Fatal(err)
-	}
+	read_config_file(cwd, *config_file, config)
 
 	// runner
 	if err := linter.Run(filesystem, config, *debug, false); err != nil {

read_config_file.go

@@ -0,0 +1,60 @@
+package main
+
+import (
+	"gopkg.in/yaml.v3"
+	"io"
+	"log"
+	"os"
+	"path"
+)
+
+func read_config_file(cwd string, config_file string, config *Config) {
+
+	// if config_file is default, see if there's an `.ls-lint.yaml` file instead
+	if config_file == ".ls-lint.yml" {
+		files, err := os.ReadDir(cwd)
+		if err != nil {
+			log.Fatal(err)
+		}
+
+		for _, file := range files {
+			match, match_err := path.Match(".ls-lint.y*ml", file.Name())
+			if match_err != nil {
+				log.Fatal(match_err)
+			}
+			if match {
+				config_file = file.Name()
+				break
+			}
+		}
+	}
+	// open config file
+	file, err := os.Open(config_file)
+
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	// close file
+	defer func() {
+		err = file.Close()
+
+		if err != nil {
+			log.Fatal(err)
+		}
+	}()
+
+	// read file
+	configBytes, err := io.ReadAll(file)
+
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	// to yaml
+	err = yaml.Unmarshal(configBytes, &config)
+
+	if err != nil {
+		log.Fatal(err)
+	}
+}

read_config_file_test.go

@@ -0,0 +1,27 @@
+package main
+
+import (
+	"log"
+	"os"
+	"reflect"
+	"sync"
+	"testing"
+)
+
+func TestReadConfigFile(t *testing.T) {
+	examples_config := &Config{
+		RWMutex: new(sync.RWMutex),
+	}
+	root_config := &Config {
+		RWMutex: new(sync.RWMutex),
+	}
+	cwd, err := os.Getwd()
+	if err != nil {
+		log.Fatal(err)
+	}
+	read_config_file(cwd, "./examples/nuxt-nuxt-js/.ls-lint.yml", examples_config)
+	read_config_file(cwd, ".ls-lint.yml", root_config)
+	if reflect.DeepEqual(examples_config.getLs(), root_config.getLs()) {
+		t.Errorf("Both configuration files have the same ls rules")
+	}
+}