Move from float64 to int64 as return value in FileSizeInBytes method

fileutil/fileutil.go

@@ -17,7 +17,7 @@ type FileManager interface {
 	RemoveAll(path string) error
 	Write(path string, value string, perm os.FileMode) error
 	WriteBytes(path string, value []byte) error
-	FileSizeInBytes(pth string) (float64, error)
+	FileSizeInBytes(pth string) (int64, error)
 }
 
 type fileManager struct {
@@ -92,14 +92,14 @@ func (f fileManager) WriteBytes(path string, value []byte) error {
 }
 
 // FileSizeInBytes checks if the provided path exists and return with the file size (bytes) using os.Lstat.
-func (fileManager) FileSizeInBytes(pth string) (float64, error) {
+func (fileManager) FileSizeInBytes(pth string) (int64, error) {
 	if pth == "" {
 		return 0, errors.New("No path provided")
 	}
-	fileInf, err := os.Lstat(pth)
+	fileInf, err := os.Stat(pth)
 	if err != nil {
 		return 0, err
 	}
 
-	return float64(fileInf.Size()), nil
+	return fileInf.Size(), nil
 }

fileutil/fileutil_test.go

@@ -67,14 +67,14 @@ func TestFileSizeInBytes(t *testing.T) {
 
 			fileSize, err := manager.FileSizeInBytes(tmpFilePath)
 			require.NoError(t, err)
-			require.Equal(t, float64(len([]byte(content))), fileSize)
+			require.Equal(t, int64(len([]byte(content))), fileSize)
 		}
 	})
 
 	t.Run("Failure when non-existing path", func(t *testing.T) {
 		tmpFilePath := filepath.Join(tmpDirPath, "dir-does-not-exist-2", "FileSizeInBytes-error.txt")
 		_, err := manager.FileSizeInBytes(tmpFilePath)
-		require.EqualError(t, err, "lstat "+tmpFilePath+": no such file or directory")
+		require.EqualError(t, err, "stat "+tmpFilePath+": no such file or directory")
 	})
 
 	t.Run("Failure when path is empty string", func(t *testing.T) {