lib/memory_mapped_file_test.cc

/*
 * Copyright (C) 2017-2020  The Project X-Ray Authors.
 *
 * Use of this source code is governed by a ISC-style
 * license that can be found in the LICENSE file or at
 * https://opensource.org/licenses/ISC
 *
 * SPDX-License-Identifier: ISC
 */
#include <prjxray/memory_mapped_file.h>

#include <gtest/gtest.h>

TEST(MemoryMappedFileTest, NonExistantFile) {
	EXPECT_FALSE(prjxray::MemoryMappedFile::InitWithFile("does_not_exist"));
}

TEST(MemoryMappedFileTest, ZeroLengthFileReturnObjectWithZeroLength) {
	auto file = prjxray::MemoryMappedFile::InitWithFile("empty_file");
	ASSERT_TRUE(file);
	EXPECT_EQ(nullptr, file->data());
	EXPECT_EQ(static_cast<size_t>(0), file->size());
}

TEST(MemoryMappedFileTest, ExistingFile) {
	auto file = prjxray::MemoryMappedFile::InitWithFile("small_file");
	ASSERT_TRUE(file);
	EXPECT_EQ(static_cast<size_t>(4), file->size());
	EXPECT_EQ(0, memcmp("foo\n", file->data(), 4));
}