libcryfs/test/fspp/fuse/write/FuseWriteOverflowTest.cpp
2018-05-21 08:11:43 -07:00

85 lines
2.8 KiB
C++

#include <cpp-utils/data/DataFixture.h>
#include "testutils/FuseWriteTest.h"
#include "../../testutils/InMemoryFile.h"
#include "fspp/fs_interface/FuseErrnoException.h"
using ::testing::_;
using ::testing::Invoke;
using ::testing::Action;
using cpputils::DataFixture;
using cpputils::Data;
using namespace fspp::fuse;
class FuseWriteOverflowTest: public FuseWriteTest {
public:
size_t FILESIZE;
size_t WRITESIZE;
size_t OFFSET;
WriteableInMemoryFile testFile;
Data writeData;
FuseWriteOverflowTest(size_t filesize, size_t writesize, size_t offset)
: FILESIZE(filesize), WRITESIZE(writesize), OFFSET(offset), testFile(DataFixture::generate(FILESIZE)), writeData(DataFixture::generate(WRITESIZE)) {
ReturnIsFileOnLstatWithSize(FILENAME, FILESIZE);
OnOpenReturnFileDescriptor(FILENAME, 0);
EXPECT_CALL(fsimpl, write(0, _, _, _)).WillRepeatedly(WriteToFile);
}
// This write() mock implementation writes to the stored virtual file.
Action<void(int, const void*, size_t, off_t)> WriteToFile =
Invoke([this](int, const void *buf, size_t count, off_t offset) {
testFile.write(buf, count, offset);
});
};
class FuseWriteOverflowTestWithNonemptyFile: public FuseWriteOverflowTest {
public:
FuseWriteOverflowTestWithNonemptyFile(): FuseWriteOverflowTest(1000, 2000, 500) {}
};
TEST_F(FuseWriteOverflowTestWithNonemptyFile, WriteMoreThanFileSizeFromBeginning) {
WriteFile(FILENAME, writeData.data(), WRITESIZE, 0);
EXPECT_EQ(WRITESIZE, testFile.size());
EXPECT_TRUE(testFile.fileContentEquals(writeData, 0));
}
TEST_F(FuseWriteOverflowTestWithNonemptyFile, WriteMoreThanFileSizeFromMiddle) {
WriteFile(FILENAME, writeData.data(), WRITESIZE, OFFSET);
EXPECT_EQ(OFFSET + WRITESIZE, testFile.size());
EXPECT_TRUE(testFile.regionUnchanged(0, OFFSET));
EXPECT_TRUE(testFile.fileContentEquals(writeData, OFFSET));
}
TEST_F(FuseWriteOverflowTestWithNonemptyFile, WriteAfterFileEnd) {
WriteFile(FILENAME, writeData.data(), WRITESIZE, FILESIZE + OFFSET);
EXPECT_EQ(FILESIZE + OFFSET + WRITESIZE, testFile.size());
EXPECT_TRUE(testFile.regionUnchanged(0, FILESIZE));
EXPECT_TRUE(testFile.fileContentEquals(writeData, FILESIZE + OFFSET));
}
class FuseWriteOverflowTestWithEmptyFile: public FuseWriteOverflowTest {
public:
FuseWriteOverflowTestWithEmptyFile(): FuseWriteOverflowTest(0, 2000, 500) {}
};
TEST_F(FuseWriteOverflowTestWithEmptyFile, WriteToBeginOfEmptyFile) {
WriteFile(FILENAME, writeData.data(), WRITESIZE, 0);
EXPECT_EQ(WRITESIZE, testFile.size());
EXPECT_TRUE(testFile.fileContentEquals(writeData, 0));
}
TEST_F(FuseWriteOverflowTestWithEmptyFile, WriteAfterFileEnd) {
WriteFile(FILENAME, writeData.data(), WRITESIZE, OFFSET);
EXPECT_EQ(OFFSET + WRITESIZE, testFile.size());
EXPECT_TRUE(testFile.fileContentEquals(writeData, OFFSET));
}