Add sync command

app/utils_test.go

@@ -0,0 +1,36 @@
+package app
+
+import "testing"
+
+func TestGetFileExtension(t *testing.T) {
+
+	toTest := map[string]string{
+		"myYamlFile.yaml": "yaml",
+		"myTxtFile.txt":   "txt",
+		"myJsonFile.json": "json",
+	}
+
+	for key, value := range toTest {
+		result, err := getFileExcension(key)
+
+		if err != nil {
+			t.Errorf("Unexpected error: %v", err)
+		}
+
+		if result != value {
+			t.Errorf("Expected to get %v, instead of this got %v", value, result)
+		}
+
+	}
+
+}
+
+func TestErrorInGetExcensionFile(t *testing.T) {
+
+	result, err := getFileExcension("test")
+
+	if err == nil {
+		t.Errorf("Expected to get error, instead of this got result %v", result)
+	}
+
+}