added mockFunction

Signed-off-by: satyazzz123 <beherasatyajit716@gmail.com>

environment/container/fileinfo.go

@@ -1,5 +1,5 @@
 /*
- *  Copyright IBM Corporation 2020, 2021
+ *  Copyright IBM Corporation 2021
  *
  *  Licensed under the Apache License, Version 2.0 (the "License");
  *  you may not use this file except in compliance with the License.
@@ -13,47 +13,106 @@
  *  See the License for the specific language governing permissions and
  *  limitations under the License.
  */
-
 package container
 
 import (
-	"io/fs"
+	"testing"
 	"time"
 
 	"github.com/docker/docker/api/types"
 )
 
-// FileInfo implements fs.FileInfo interface
-type FileInfo struct {
-	stat types.ContainerPathStat
+func mockFunction() types.ContainerPathStat {
+	return types.ContainerPathStat{
+		Name:  "mockfile.txt",
+		Size:  int64(512),
+		Mode:  0755,
+		Mtime: time.Now(),
+	}
 }
 
-// Name implements fs.FileInfo interface
-func (f *FileInfo) Name() string { // base name of the file
-	return f.stat.Name
-}
+func TestFileInfoName(t *testing.T) {
+	t.Run("Testing Name method", func(t *testing.T) {
+		// Use the mock function to get a types.ContainerPathStat object
+		realStat := mockFunction()
 
-// Size implements fs.FileInfo interface
-func (f *FileInfo) Size() int64 { // length in bytes for regular files; system-dependent for others
-	return f.stat.Size
+		// Use the real stat to create a FileInfo instance
+		fileInfo := &FileInfo{
+			stat: realStat,
+		}
+
+		// Call the Name method and check if it returns the expected name
+		actualName := fileInfo.Name()
+		if actualName != realStat.Name {
+			t.Errorf("Name() = %s, expected %s", actualName, realStat.Name)
+		}
+	})
 }
 
-// Mode implements fs.FileInfo interface
-func (f *FileInfo) Mode() fs.FileMode { // file mode bits
-	return f.stat.Mode
+func TestFileInfoSize(t *testing.T) {
+	t.Run("Testing Size method", func(t *testing.T) {
+
+		realStat := mockFunction()
+
+		fileInfo := &FileInfo{
+			stat: realStat,
+		}
+
+		// Call the Size method and check if it returns the expected size
+		actualSize := fileInfo.Size()
+		if actualSize != realStat.Size {
+			t.Errorf("Size() = %d, expected %d", actualSize, realStat.Size)
+		}
+	})
 }
 
-// ModTime implements fs.FileInfo interface
-func (f *FileInfo) ModTime() time.Time { // modification time
-	return f.stat.Mtime
+func TestFileInfoMode(t *testing.T) {
+	t.Run("Testing Mode method", func(t *testing.T) {
+
+		realStat := mockFunction()
+
+		fileInfo := &FileInfo{
+			stat: realStat,
+		}
+
+		// Call the Mode method and check if it returns the expected mode
+		actualMode := fileInfo.Mode()
+		if actualMode != realStat.Mode {
+			t.Errorf("Mode() = %v, expected %v", actualMode, realStat.Mode)
+		}
+	})
 }
 
-// IsDir implements fs.FileInfo interface
-func (f *FileInfo) IsDir() bool { // abbreviation for Mode().IsDir()
-	return f.stat.Mode.IsDir()
+func TestFileInfoModTime(t *testing.T) {
+	t.Run("Testing ModTime method", func(t *testing.T) {
+
+		realStat := mockFunction()
+
+		fileInfo := &FileInfo{
+			stat: realStat,
+		}
+
+		// Call the ModTime method and check if it returns the expected mod time
+		actualModTime := fileInfo.ModTime()
+		if !actualModTime.Equal(realStat.Mtime) {
+			t.Errorf("ModTime() = %v, expected %v", actualModTime, realStat.Mtime)
+		}
+	})
 }
 
-// Sys implements fs.FileInfo interface
-func (f *FileInfo) Sys() interface{} { // underlying data source (can return nil)
-	return nil
+func TestFileInfoIsDir(t *testing.T) {
+	t.Run("Testing IsDir method", func(t *testing.T) {
+
+		realStat := mockFunction()
+
+		fileInfo := &FileInfo{
+			stat: realStat,
+		}
+
+		// Call the IsDir method and check if it returns the expected value
+		actualIsDir := fileInfo.IsDir()
+		if actualIsDir != realStat.Mode.IsDir() {
+			t.Errorf("IsDir() = %v, expected %v", actualIsDir, realStat.Mode.IsDir())
+		}
+	})
 }