fix linting warnings

lib/components.go

@@ -4,6 +4,7 @@ import (
 	"sync"
 
 	"fmt"
+
 	"github.com/opencontrol/compliance-masonry/lib/common"
 	"github.com/opencontrol/compliance-masonry/lib/components"
 )
@@ -72,7 +73,7 @@ func (ws *localWorkspace) LoadComponent(componentDir string) error {
 	if ws.components.compareAndAdd(component) {
 		ws.justifications.LoadMappings(component)
 	} else {
-		return fmt.Errorf("Component: %s exists!\n", component.GetKey())
+		return fmt.Errorf("component: %s exists", component.GetKey())
 	}
 	return nil
 }

lib/components_test.go

@@ -1,11 +1,12 @@
 package lib
 
 import (
+	"path/filepath"
+	"testing"
+
 	"github.com/opencontrol/compliance-masonry/lib/common/mocks"
 	"github.com/opencontrol/compliance-masonry/lib/result"
 	"github.com/stretchr/testify/assert"
-	"path/filepath"
-	"testing"
 )
 
 func TestAddComponent(t *testing.T) {
@@ -56,7 +57,7 @@ func TestLoadSameComponentTwice(t *testing.T) {
 	err = ws.LoadComponent(componentPath)
 	// Should return an error that this component was already loaded.
 	assert.NotNil(t, err)
-	assert.Equal(t, "Component: EC2 exists!\n", err.Error())
+	assert.Equal(t, "component: EC2 exists", err.Error())
 }
 
 func TestBadLoadComponent(t *testing.T) {

tools/fs/fs.go

@@ -26,7 +26,7 @@ type OSUtil struct {
 // OpenAndReadFile is a util that will check if the file exists, open and then read the file.
 func (fs OSUtil) OpenAndReadFile(file string) ([]byte, error) {
 	if _, err := os.Stat(file); os.IsNotExist(err) {
-		return nil, fmt.Errorf("Error: %s does not exist\n", file)
+		return nil, fmt.Errorf("error: %s does not exist", file)
 	}
 	bytes, err := ioutil.ReadFile(file)
 	if err != nil {