Fix windows test

Author: mnsboev

utils/image/base64converter_test.go

@@ -248,9 +248,7 @@ func TestToBase64WithBaseDir_EmptyBaseDir(t *testing.T) {
 func TestResolveImagePath(t *testing.T) {
 	absolutePath := filepath.Join(string(filepath.Separator), "absolute", "path.png")
 	baseDir := filepath.Join(string(filepath.Separator), "base", "dir")
-	expectedWithBase := filepath.Join(string(filepath.Separator), "base", "dir", "images", "pic.png")
-	expectedCurrentDir := filepath.Join(string(filepath.Separator), "base", "dir", "pic.png")
-	expectedParentDir := filepath.Join(string(filepath.Separator), "base", "pic.png")
+	relativePath := filepath.Join("images", "pic.png")
 
 	tests := []struct {
 		name      string
@@ -259,10 +257,10 @@ func TestResolveImagePath(t *testing.T) {
 		expected  string
 	}{
 		{"absolute path", absolutePath, baseDir, absolutePath},
-		{"relative path with base", "images/pic.png", baseDir, expectedWithBase},
-		{"relative path no base", "images/pic.png", "", "images/pic.png"},
-		{"current dir relative", "./pic.png", baseDir, expectedCurrentDir},
-		{"parent dir relative", "../pic.png", baseDir, expectedParentDir},
+		{"relative path with base", relativePath, baseDir, filepath.Join(baseDir, relativePath)},
+		{"relative path no base", relativePath, "", relativePath},
+		{"current dir relative", filepath.Join(".", "pic.png"), baseDir, filepath.Join(baseDir, "pic.png")},
+		{"parent dir relative", filepath.Join("..", "pic.png"), baseDir, filepath.Join(baseDir, "..", "pic.png")},
 	}
 
 	for _, test := range tests {