Tests for IO/FsUtils

tests/IO/FsUtils.cpp

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+/*
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
+#include <catch2/catch_all.hpp>
+
+#include "IO/FsUtils.hpp"
+#include "IO/AppFolders.hpp"
+
+#include <filesystem>
+#include <fstream>
+
+using namespace OpenVulkano;
+
+TEST_CASE("DeleteEmptyDirs", "[FsUtils]")
+{
+	auto baseDir = AppFolders::GetAppTempDir() / "testEmptyDirs";
+	std::filesystem::create_directories(baseDir / "emptyDir");
+	std::filesystem::create_directories(baseDir / "nonEmptyDir");
+	std::ofstream(baseDir / "nonEmptyDir/file.txt").put('x');
+
+	REQUIRE(FsUtils::DeleteEmptyDirs(baseDir));
+	REQUIRE(!std::filesystem::exists(baseDir / "emptyDir"));
+	REQUIRE(std::filesystem::exists(baseDir / "nonEmptyDir"));
+
+	std::filesystem::create_directories(baseDir / "emptyDir");
+	REQUIRE(FsUtils::DeleteEmptyDirs(baseDir, false));
+	REQUIRE(!std::filesystem::exists(baseDir / "emptyDir"));
+
+	std::filesystem::remove_all(baseDir);
+}
+
+TEST_CASE("DeleteEmptySubTrees", "[FsUtils]")
+{
+	auto baseDir = AppFolders::GetAppTempDir() / "testEmptySubtrees";
+	std::filesystem::create_directories(baseDir / "emptyTree" / "subDir1");
+	std::filesystem::create_directories(baseDir / "emptyTree" / "subDir2");
+
+	REQUIRE(FsUtils::DeleteEmptySubTrees(baseDir));
+	REQUIRE(!std::filesystem::exists(baseDir / "emptyTree"));
+
+	std::filesystem::remove_all(baseDir);
+}
+
+TEST_CASE("IsTreeEmpty", "[FsUtils]")
+{
+	auto baseDir = AppFolders::GetAppTempDir() / "testTreeEmpty";
+	std::filesystem::create_directories(baseDir / "emptyDir");
+	std::filesystem::create_directories(baseDir / "nonEmptyDir");
+	std::ofstream(baseDir / "nonEmptyDir/file.txt").put('x');
+
+	REQUIRE(FsUtils::IsTreeEmpty(baseDir / "emptyDir"));
+	REQUIRE(!FsUtils::IsTreeEmpty(baseDir / "nonEmptyDir"));
+
+	std::filesystem::remove_all(baseDir);
+}
+
+TEST_CASE("GetDirSize", "[FsUtils]")
+{
+	auto baseDir = AppFolders::GetAppTempDir() / "testDirSize";
+	std::filesystem::create_directories(baseDir / "dir");
+	std::ofstream(baseDir / "dir/file1.txt").put('x');
+	std::ofstream(baseDir / "dir/file2.txt").put('y');
+
+	REQUIRE(FsUtils::GetDirSize(baseDir / "dir") == 2);
+
+	std::filesystem::remove_all(baseDir);
+}