Added test_util unit tests

tests/test_util.cc

@@ -0,0 +1,42 @@
+/**
+ * tests/test_util.cc
+ *
+ * Copyright (c) 2021 Bartek Kryza <bkryza@gmail.com>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#define CATCH_CONFIG_MAIN
+
+#include "util/util.h"
+
+#include "catch.h"
+
+TEST_CASE("Test split", "[unit-test]")
+{
+    using C = std::vector<std::string>;
+    using namespace clanguml::util;
+
+    const C empty{};
+
+    CHECK(split("", " ") == C{""});
+    CHECK(split("ABCD", " ") == C{"ABCD"});
+
+    CHECK(split("std::vector::detail", "::") == C{"std", "vector", "detail"});
+}
+
+TEST_CASE("Test ns_relative", "[unit-test]")
+{
+    using namespace clanguml::util;
+
+    CHECK(ns_relative({}, "std::vector") == "std::vector");
+}