✨ (filemanager): Add clear file

leka · Dec 9, 2022 · d249709 · d249709
1 parent 7de1587
commit d249709
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Showing 3 changed files with 35 additions and 0 deletions.
diff --git a/libs/FileManagerKit/include/FileManagerKit.h b/libs/FileManagerKit/include/FileManagerKit.h
@@ -61,4 +61,5 @@ struct File : public interface::File, public mbed::NonCopyable<File> {
 
 auto create_directory(const std::filesystem::path &path) -> bool;
 auto remove(const std::filesystem::path &path) -> bool;
+void clear(const std::filesystem::path &path);
 }	// namespace leka::FileManagerKit
diff --git a/libs/FileManagerKit/source/FileManagerKit.cpp b/libs/FileManagerKit/source/FileManagerKit.cpp
@@ -20,3 +20,10 @@ auto FileManagerKit::remove(const std::filesystem::path &path) -> bool
 {
 	return std::filesystem::remove(path);
 }
+
+void FileManagerKit::clear(const std::filesystem::path &path)
+{
+	if (std::filesystem::exists(path)) {
+		std::filesystem::resize_file(path, 0);
+	}
+}
diff --git a/libs/FileManagerKit/tests/FileManagerKit_test.cpp b/libs/FileManagerKit/tests/FileManagerKit_test.cpp
@@ -81,3 +81,30 @@ TEST_F(FileSystemTest, removeNotExistingDirectory)
 	auto removed = FileManagerKit::remove(path_B);
 	ASSERT_FALSE(removed);
 }
+
+TEST_F(FileSystemTest, clear)
+{
+	std::ofstream(path_A).put('a');
+
+	auto initial_file_size	= std::filesystem::file_size(path_A);
+	auto initial_free_space = std::filesystem::space(path_A).free;
+
+	EXPECT_NE(initial_file_size, 0);
+
+	FileManagerKit::clear(path_A);
+
+	auto final_file_size  = std::filesystem::file_size(path_A);
+	auto final_free_space = std::filesystem::space(path_A).free;
+
+	EXPECT_LT(final_file_size, initial_file_size);
+	EXPECT_GT(final_free_space, initial_free_space);
+}
+
+TEST_F(FileSystemTest, clearNotExistingFile)
+{
+	auto removed = FileManagerKit::remove(path_A);
+
+	FileManagerKit::clear(path_A);
+
+	// nothing expected
+}