Fixed serverside errors occurring when getting files with no extension

model/file_info.go

@@ -32,6 +32,11 @@ func GetInfoForBytes(filename string, data []byte) (*FileInfo, *AppError) {
 		mimeType = mime.TypeByExtension(extension)
 	}
 
+	if extension != "" && extension[0] == '.' {
+		// the client expects a file extension without the leading period
+		extension = extension[1:]
+	}
+
 	hasPreviewImage := isImage
 	if mimeType == "image/gif" {
 		// just show the gif itself instead of a preview image for animated gifs
@@ -45,7 +50,7 @@ func GetInfoForBytes(filename string, data []byte) (*FileInfo, *AppError) {
 	return &FileInfo{
 		Filename:        filename,
 		Size:            size,
-		Extension:       extension[1:],
+		Extension:       extension,
 		MimeType:        mimeType,
 		HasPreviewImage: hasPreviewImage,
 	}, nil

model/file_info_test.go

@@ -19,7 +19,7 @@ func TestGetInfoForBytes(t *testing.T) {
 	} else if info.Size != 1000 {
 		t.Fatalf("Got incorrect size: %v", info.Size)
 	} else if info.Extension != "txt" {
-		t.Fatalf("Git incorrect file extension: %v", info.Extension)
+		t.Fatalf("Got incorrect file extension: %v", info.Extension)
 	} else if info.MimeType != "text/plain; charset=utf-8" {
 		t.Fatalf("Got incorrect mime type: %v", info.MimeType)
 	} else if info.HasPreviewImage {
@@ -33,7 +33,7 @@ func TestGetInfoForBytes(t *testing.T) {
 	} else if info.Size != 1000 {
 		t.Fatalf("Got incorrect size: %v", info.Size)
 	} else if info.Extension != "png" {
-		t.Fatalf("Git incorrect file extension: %v", info.Extension)
+		t.Fatalf("Got incorrect file extension: %v", info.Extension)
 	} else if info.MimeType != "image/png" {
 		t.Fatalf("Got incorrect mime type: %v", info.MimeType)
 	} else if !info.HasPreviewImage {
@@ -49,7 +49,7 @@ func TestGetInfoForBytes(t *testing.T) {
 	} else if info.Size != 35 {
 		t.Fatalf("Got incorrect size: %v", info.Size)
 	} else if info.Extension != "gif" {
-		t.Fatalf("Git incorrect file extension: %v", info.Extension)
+		t.Fatalf("Got incorrect file extension: %v", info.Extension)
 	} else if info.MimeType != "image/gif" {
 		t.Fatalf("Got incorrect mime type: %v", info.MimeType)
 	} else if !info.HasPreviewImage {
@@ -67,10 +67,24 @@ func TestGetInfoForBytes(t *testing.T) {
 	} else if info.Size != 38689 {
 		t.Fatalf("Got incorrect size: %v", info.Size)
 	} else if info.Extension != "gif" {
-		t.Fatalf("Git incorrect file extension: %v", info.Extension)
+		t.Fatalf("Got incorrect file extension: %v", info.Extension)
 	} else if info.MimeType != "image/gif" {
 		t.Fatalf("Got incorrect mime type: %v", info.MimeType)
 	} else if info.HasPreviewImage {
 		t.Fatalf("Got HasPreviewImage = true for animated gif")
 	}
+
+	if info, err := GetInfoForBytes("filewithoutextension", fakeFile); err != nil {
+		t.Fatal(err)
+	} else if info.Filename != "filewithoutextension" {
+		t.Fatalf("Got incorrect filename: %v", info.Filename)
+	} else if info.Size != 1000 {
+		t.Fatalf("Got incorrect size: %v", info.Size)
+	} else if info.Extension != "" {
+		t.Fatalf("Got incorrect file extension: %v", info.Extension)
+	} else if info.MimeType != "" {
+		t.Fatalf("Got incorrect mime type: %v", info.MimeType)
+	} else if info.HasPreviewImage {
+		t.Fatalf("Got HasPreviewImage = true for non-image file")
+	}
 }