libcryfs/test/fspp/fuse/createAndOpenFile/FuseCreateAndOpenFileDescriptorTest.cpp

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#include "testutils/FuseCreateAndOpenTest.h"
using ::testing::_;
using ::testing::StrEq;
using ::testing::WithParamInterface;
using ::testing::Values;
using ::testing::Return;
using cpputils::unique_ref;
using cpputils::make_unique_ref;
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class FuseCreateAndOpenFileDescriptorTest: public FuseCreateAndOpenTest, public WithParamInterface<int> {
public:
void CreateAndOpenAndReadFile(const char *filename) {
auto fs = TestFS();
auto fd = CreateAndOpenFile(fs.get(), filename);
ReadFile(fd->fd());
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}
private:
unique_ref<OpenFileHandle> CreateAndOpenFile(const TempTestFS *fs, const char *filename) {
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auto realpath = fs->mountDir() / filename;
auto fd = make_unique_ref<OpenFileHandle>(realpath.string().c_str(), O_RDONLY | O_CREAT, S_IRUSR | S_IRGRP | S_IROTH);
EXPECT_GE(fd->fd(), 0) << "Creating file failed";
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return fd;
}
void ReadFile(int fd) {
uint8_t buf;
int retval = ::read(fd, &buf, 1);
EXPECT_EQ(1, retval) << "Reading file failed";
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}
};
INSTANTIATE_TEST_CASE_P(FuseCreateAndOpenFileDescriptorTest, FuseCreateAndOpenFileDescriptorTest, Values(0, 2, 5, 1000, 1024*1024*1024));
TEST_P(FuseCreateAndOpenFileDescriptorTest, TestReturnedFileDescriptor) {
ReturnDoesntExistOnLstat(FILENAME);
EXPECT_CALL(fsimpl, createAndOpenFile(StrEq(FILENAME), _, _, _))
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.Times(1).WillOnce(Return(GetParam()));
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EXPECT_CALL(fsimpl, read(GetParam(), _, _, _)).Times(1).WillOnce(Return(fspp::num_bytes_t(1)));
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//For the syscall to succeed, we also need to give an fstat implementation.
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ReturnIsFileOnFstatWithSize(GetParam(), fspp::num_bytes_t(1));
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CreateAndOpenAndReadFile(FILENAME);
}