libcryfs/test/fuse/read/FuseReadErrorTest.cpp

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#include "testutils/FuseReadTest.h"
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#include "../../../fuse/FuseErrnoException.h"
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using ::testing::_;
using ::testing::StrEq;
using ::testing::WithParamInterface;
using ::testing::Values;
using ::testing::Eq;
using ::testing::Ne;
using ::testing::Return;
using ::testing::Invoke;
using ::testing::Throw;
using namespace fspp::fuse;
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class FuseReadErrorTest: public FuseReadTest, public WithParamInterface<int> {
public:
size_t FILESIZE = 64*1024*1024;
size_t READCOUNT = 32*1024*1024;
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void SetUp() override {
//Make the file size big enough that fuse should issue at least two reads
ReturnIsFileOnLstatWithSize(FILENAME, FILESIZE);
OnOpenReturnFileDescriptor(FILENAME, 0);
}
};
INSTANTIATE_TEST_CASE_P(FuseReadErrorTest, FuseReadErrorTest, Values(EAGAIN, EBADF, EFAULT, EINTR, EINVAL, EIO, EISDIR, EOVERFLOW, ESPIPE, ENXIO));
TEST_P(FuseReadErrorTest, ReturnErrorOnFirstReadCall) {
EXPECT_CALL(fsimpl, read(0, _, _, _))
.WillRepeatedly(Throw(FuseErrnoException(GetParam())));
char *buf = new char[READCOUNT];
auto retval = ReadFileReturnError(FILENAME, buf, READCOUNT, 0);
EXPECT_EQ(GetParam(), retval.error);
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delete[] buf;
}
TEST_P(FuseReadErrorTest, ReturnErrorOnSecondReadCall) {
// The first read request is from the beginning of the file and works, but the later ones fail.
// We store the number of bytes the first call could successfully read and check later that our
// read syscall returns exactly this number of bytes
size_t successfullyReadBytes = -1;
EXPECT_CALL(fsimpl, read(0, _, _, Eq(0)))
.Times(1)
.WillOnce(Invoke([&successfullyReadBytes](int, void*, size_t count, off_t) {
// Store the number of successfully read bytes
successfullyReadBytes = count;
return count;
}));
EXPECT_CALL(fsimpl, read(0, _, _, Ne(0)))
.WillRepeatedly(Throw(FuseErrnoException(GetParam())));
char *buf = new char[READCOUNT];
auto retval = ReadFileReturnError(FILENAME, buf, READCOUNT, 0);
EXPECT_EQ(0, retval.error);
EXPECT_EQ(successfullyReadBytes, retval.read_bytes); // Check that we're getting the number of successfully read bytes (the first read call) returned
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delete[] buf;
}