feat(bounty-service): Update config unit testing to properly use WriteFIle to remove linter errors

Author: DauntlessDev

services/bounty-service/internal/config/config_test.go

@@ -10,12 +10,16 @@ import (
 func TestLoadConfig(t *testing.T) {
 	// Create a temporary .env file for testing
 	tempEnvFile := ".env.test"
-	os.WriteFile(tempEnvFile, []byte("DATABASE_URL=test_db_url\nSERVER_PORT=8081"), 0644)
-	defer os.Remove(tempEnvFile) // Clean up the temporary file
+	err := os.WriteFile(tempEnvFile, []byte("DATABASE_URL=test_db_url\nSERVER_PORT=8081"), 0644)
+	assert.NoError(t, err)
+	defer func() {
+		err := os.Remove(tempEnvFile)
+		assert.NoError(t, err)
+	}()
 
 	// Unset environment variables that might interfere with the test
-	os.Unsetenv("DATABASE_URL")
-	os.Unsetenv("SERVER_PORT")
+	_ = os.Unsetenv("DATABASE_URL")
+	_ = os.Unsetenv("SERVER_PORT")
 
 	cfg, err := LoadConfig(tempEnvFile)
 
@@ -25,24 +29,34 @@ func TestLoadConfig(t *testing.T) {
 	assert.Equal(t, "8081", cfg.ServerPort)
 
 	// Test with missing .env file (should not return an error)
-	os.Remove(tempEnvFile)
+	err = os.Remove(tempEnvFile)
+	assert.NoError(t, err)
+
 	cfg, err = LoadConfig()
 	assert.NoError(t, err)
 	assert.NotNil(t, cfg)
 
 	// Clean up environment variables set by the test
-	os.Unsetenv("DATABASE_URL")
-	os.Unsetenv("SERVER_PORT")
+	_ = os.Unsetenv("DATABASE_URL")
+	_ = os.Unsetenv("SERVER_PORT")
 }
 
 func TestLoadConfig_EnvVarsOverride(t *testing.T) {
 	// Set environment variables directly
-	os.Setenv("DATABASE_URL", "env_db_url")
-	os.Setenv("SERVER_PORT", "9000")
-	// Create a temporary .env file (should be overridden by direct env vars)
+	err := os.Setenv("DATABASE_URL", "env_db_url")
+	assert.NoError(t, err)
+
+	err = os.Setenv("SERVER_PORT", "9000")
+	assert.NoError(t, err)
+
+	// Create a temporary .env file (should be overridden by env vars)
 	tempEnvFile := ".env.test"
-	os.WriteFile(tempEnvFile, []byte("DATABASE_URL=file_db_url\nSERVER_PORT=8082"), 0644)
-	defer os.Remove(tempEnvFile)
+	err = os.WriteFile(tempEnvFile, []byte("DATABASE_URL=file_db_url\nSERVER_PORT=8082"), 0644)
+	assert.NoError(t, err)
+	defer func() {
+		err := os.Remove(tempEnvFile)
+		assert.NoError(t, err)
+	}()
 
 	cfg, err := LoadConfig(tempEnvFile)