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// Copyright 2014 The Bazel Authors. All rights reserved.
//
// 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.
#include <stdio.h>
#include <string.h>
#include <memory> // unique_ptr
#include <thread> // NOLINT (to silence Google-internal linter)
#include "src/main/cpp/util/file.h"
#include "src/main/cpp/util/file_platform.h"
#include "src/test/cpp/util/test_util.h"
#include "gtest/gtest.h"
namespace blaze_util {
using std::string;
TEST(FileTest, TestSingleThreadedPipe) {
std::unique_ptr<IPipe> pipe(CreatePipe());
char buffer[50] = {0};
ASSERT_TRUE(pipe.get()->Send("hello", 5));
ASSERT_EQ(3, pipe.get()->Receive(buffer, 3));
ASSERT_TRUE(pipe.get()->Send(" world", 6));
ASSERT_EQ(5, pipe.get()->Receive(buffer + 3, 5));
ASSERT_EQ(3, pipe.get()->Receive(buffer + 8, 40));
ASSERT_EQ(0, strncmp(buffer, "hello world", 11));
}
TEST(FileTest, TestMultiThreadedPipe) {
std::unique_ptr<IPipe> pipe(CreatePipe());
char buffer[50] = {0};
std::thread writer_thread([&pipe]() {
ASSERT_TRUE(pipe.get()->Send("hello", 5));
ASSERT_TRUE(pipe.get()->Send(" world", 6));
});
// Wait for all data to be fully written to the pipe.
writer_thread.join();
ASSERT_EQ(3, pipe.get()->Receive(buffer, 3));
ASSERT_EQ(5, pipe.get()->Receive(buffer + 3, 5));
ASSERT_EQ(3, pipe.get()->Receive(buffer + 8, 40));
ASSERT_EQ(0, strncmp(buffer, "hello world", 11));
}
TEST(FileTest, TestReadFile) {
const char* tempdir = getenv("TEST_TMPDIR");
ASSERT_NE(nullptr, tempdir);
ASSERT_NE(0, tempdir[0]);
std::string filename(JoinPath(tempdir, "test.readfile"));
AutoFileStream fh(fopen(filename.c_str(), "wt"));
EXPECT_TRUE(fh.IsOpen());
ASSERT_EQ(11, fwrite("hello world", 1, 11, fh));
fh.Close();
std::string actual;
ASSERT_TRUE(ReadFile(filename, &actual));
ASSERT_EQ(std::string("hello world"), actual);
ASSERT_TRUE(ReadFile(filename, &actual, 5));
ASSERT_EQ(std::string("hello"), actual);
ASSERT_TRUE(ReadFile("/dev/null", &actual, 42));
ASSERT_EQ(std::string(""), actual);
}
TEST(FileTest, TestWriteFile) {
const char* tempdir = getenv("TEST_TMPDIR");
ASSERT_NE(nullptr, tempdir);
ASSERT_NE(0, tempdir[0]);
std::string filename(JoinPath(tempdir, "test.writefile"));
ASSERT_TRUE(WriteFile("hello", 3, filename));
char buf[6] = {0};
AutoFileStream fh(fopen(filename.c_str(), "rt"));
EXPECT_TRUE(fh.IsOpen());
fflush(fh);
ASSERT_EQ(3, fread(buf, 1, 5, fh));
fh.Close();
ASSERT_EQ(std::string(buf), std::string("hel"));
ASSERT_TRUE(WriteFile("hello", 5, filename));
fh = fopen(filename.c_str(), "rt");
EXPECT_TRUE(fh.IsOpen());
memset(buf, 0, 6);
ASSERT_EQ(5, fread(buf, 1, 5, fh));
fh.Close();
ASSERT_EQ(std::string(buf), std::string("hello"));
ASSERT_TRUE(WriteFile("hello", 5, "/dev/null"));
ASSERT_EQ(0, remove(filename.c_str()));
}
TEST(FileTest, TestMtimeHandling) {
const char* tempdir_cstr = getenv("TEST_TMPDIR");
ASSERT_NE(tempdir_cstr, nullptr);
ASSERT_NE(tempdir_cstr[0], 0);
string tempdir(tempdir_cstr);
std::unique_ptr<IFileMtime> mtime(CreateFileMtime());
bool actual = false;
ASSERT_TRUE(mtime.get()->GetIfInDistantFuture(tempdir, &actual));
ASSERT_FALSE(actual);
// Create a new file, assert its mtime is not in the future.
string file(JoinPath(tempdir, "foo.txt"));
ASSERT_TRUE(WriteFile("hello", 5, file));
ASSERT_TRUE(mtime.get()->GetIfInDistantFuture(file, &actual));
ASSERT_FALSE(actual);
// Set the file's mtime to the future, assert that it's so.
ASSERT_TRUE(mtime.get()->SetToDistantFuture(file));
ASSERT_TRUE(mtime.get()->GetIfInDistantFuture(file, &actual));
ASSERT_TRUE(actual);
// Overwrite the file, resetting its mtime, assert that GetIfInDistantFuture
// notices.
ASSERT_TRUE(WriteFile("world", 5, file));
ASSERT_TRUE(mtime.get()->GetIfInDistantFuture(file, &actual));
ASSERT_FALSE(actual);
// Set it to the future again so we can reset it using SetToNow.
ASSERT_TRUE(mtime.get()->SetToDistantFuture(file));
ASSERT_TRUE(mtime.get()->GetIfInDistantFuture(file, &actual));
ASSERT_TRUE(actual);
// Assert that SetToNow resets the timestamp.
ASSERT_TRUE(mtime.get()->SetToNow(file));
ASSERT_TRUE(mtime.get()->GetIfInDistantFuture(file, &actual));
ASSERT_FALSE(actual);
// Delete the file and assert that we can no longer set or query its mtime.
ASSERT_TRUE(UnlinkPath(file));
ASSERT_FALSE(mtime.get()->SetToNow(file));
ASSERT_FALSE(mtime.get()->SetToDistantFuture(file));
ASSERT_FALSE(mtime.get()->GetIfInDistantFuture(file, &actual));
}
TEST(FileTest, TestRenameDirectory) {
const char* tempdir_cstr = getenv("TEST_TMPDIR");
EXPECT_NE(tempdir_cstr, nullptr);
EXPECT_NE(tempdir_cstr[0], 0);
string tempdir(tempdir_cstr);
string dir1(JoinPath(tempdir, "test_rename_dir/dir1"));
string dir2(JoinPath(tempdir, "test_rename_dir/dir2"));
EXPECT_TRUE(MakeDirectories(dir1, 0700));
string file1(JoinPath(dir1, "file1.txt"));
EXPECT_TRUE(WriteFile("hello", 5, file1));
ASSERT_EQ(RenameDirectory(dir1, dir2), kRenameDirectorySuccess);
ASSERT_EQ(RenameDirectory(dir1, dir2), kRenameDirectoryFailureOtherError);
EXPECT_TRUE(MakeDirectories(dir1, 0700));
EXPECT_TRUE(WriteFile("hello", 5, file1));
ASSERT_EQ(RenameDirectory(dir2, dir1), kRenameDirectoryFailureNotEmpty);
}
} // namespace blaze_util
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