add TemoFile fixture

sf/filesystem.go

@@ -5,9 +5,11 @@ import (
 	"os"
 )
 
+// TempDir return path for existet temporary folder
+// the folder will remove after test finish with all contents
 func TempDir(e fixenv.Env) string {
 	return e.CacheWithCleanup(nil, nil, func() (res interface{}, cleanup fixenv.FixtureCleanupFunc, err error) {
-		dir, err := os.MkdirTemp("", "")
+		dir, err := os.MkdirTemp("", "fixenv-auto-")
 		mustNoErr(e, err, "failed to create temp dir: %v", err)
 		e.T().Logf("Temp dir created: %v", dir)
 		clean := func() {
@@ -17,3 +19,20 @@ func TempDir(e fixenv.Env) string {
 		return dir, clean, nil
 	}).(string)
 }
+
+// TempFile return path to empty existed file in TempDir
+func TempFile(e fixenv.Env) string {
+	return TempFileNamed(e, "fixenv-auto-")
+}
+
+// TempFileNamed return path to empty file in TempDir
+// pattern is pattern for os.CreateTemp
+func TempFileNamed(e fixenv.Env, pattern string) string {
+	return e.Cache(nil, nil, func() (res interface{}, err error) {
+		dir := TempDir(e)
+		f, err := os.CreateTemp(dir, pattern)
+		mustNoErr(e, err, "failed to create temp file: %w", err)
+		fName := f.Name()
+		return fName, f.Close()
+	}).(string)
+}

sf/filesystem_test.go

@@ -20,3 +20,19 @@ func TestTempDir(t *testing.T) {
 		t.Fatalf("Directory must be removed after test finished, have err: %v", err)
 	}
 }
+
+func TestTempFile(t *testing.T) {
+	var file string
+	t.Run("subtest", func(t *testing.T) {
+		e := fixenv.New(t)
+		file := TempFile(e)
+		if _, err := os.Stat(file); err != nil {
+			t.Fatal(err)
+		}
+	})
+
+	_, err := os.Stat(file)
+	if !os.IsNotExist(err) {
+		t.Fatal("File must be removed with temp directory")
+	}
+}