83 lines
3.5 KiB
C++
83 lines
3.5 KiB
C++
#include <cpp-utils/data/DataFixture.h>
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#include "testutils/FuseWriteTest.h"
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#include "../../testutils/InMemoryFile.h"
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#include "fspp/fs_interface/FuseErrnoException.h"
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#include <tuple>
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#include <cstdlib>
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using ::testing::_;
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using ::testing::WithParamInterface;
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using ::testing::Values;
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using ::testing::Combine;
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using ::testing::Invoke;
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using ::testing::Action;
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using std::tuple;
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using std::get;
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using cpputils::Data;
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using cpputils::DataFixture;
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using namespace fspp::fuse;
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// We can't test the count or size parameter directly, because fuse doesn't pass them 1:1.
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// But we can test that the data passed to the ::write syscall is correctly written.
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struct TestData {
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TestData(): count(0), offset(0), additional_bytes_at_end_of_file(0) {}
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TestData(const tuple<fspp::num_bytes_t, fspp::num_bytes_t, fspp::num_bytes_t> &data): count(get<0>(data)), offset(get<1>(data)), additional_bytes_at_end_of_file(get<2>(data)) {}
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fspp::num_bytes_t count;
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fspp::num_bytes_t offset;
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//How many more bytes does the file have after the read block?
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fspp::num_bytes_t additional_bytes_at_end_of_file;
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fspp::num_bytes_t fileSize() {
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return count + offset + additional_bytes_at_end_of_file;
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}
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};
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// The testcase creates random data in memory, offers a mock write() implementation to write to this
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// memory region and check methods to check for data equality of a region.
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class FuseWriteDataTest: public FuseWriteTest, public WithParamInterface<tuple<fspp::num_bytes_t, fspp::num_bytes_t, fspp::num_bytes_t>> {
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public:
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std::unique_ptr<WriteableInMemoryFile> testFile;
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TestData testData;
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FuseWriteDataTest()
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: testFile(nullptr),
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testData(GetParam()) {
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testFile = std::make_unique<WriteableInMemoryFile>(DataFixture::generate(testData.fileSize().value(), 1));
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ReturnIsFileOnLstatWithSize(FILENAME, testData.fileSize());
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OnOpenReturnFileDescriptor(FILENAME, 0);
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EXPECT_CALL(fsimpl, write(0, _, _, _))
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.WillRepeatedly(WriteToFile);
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}
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// This write() mock implementation writes to the stored virtual file.
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Action<void(int, const void*, fspp::num_bytes_t, fspp::num_bytes_t)> WriteToFile = Invoke([this](int, const void *buf, fspp::num_bytes_t count, fspp::num_bytes_t offset) {
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testFile->write(buf, count, offset);
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});
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};
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INSTANTIATE_TEST_CASE_P(FuseWriteDataTest, FuseWriteDataTest, Combine(
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Values(fspp::num_bytes_t(0), fspp::num_bytes_t(1), fspp::num_bytes_t(10), fspp::num_bytes_t(1000), fspp::num_bytes_t(1024), fspp::num_bytes_t(10*1024*1024)),
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Values(fspp::num_bytes_t(0), fspp::num_bytes_t(1), fspp::num_bytes_t(10), fspp::num_bytes_t(1024), fspp::num_bytes_t(10*1024*1024)),
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Values(fspp::num_bytes_t(0), fspp::num_bytes_t(1), fspp::num_bytes_t(10), fspp::num_bytes_t(1024), fspp::num_bytes_t(10*1024*1024))
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));
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TEST_P(FuseWriteDataTest, DataWasCorrectlyWritten) {
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Data randomWriteData = DataFixture::generate(testData.count.value(), 2);
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WriteFile(FILENAME, randomWriteData.data(), testData.count, testData.offset);
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EXPECT_TRUE(testFile->fileContentEquals(randomWriteData, testData.offset));
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}
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TEST_P(FuseWriteDataTest, RestOfFileIsUnchanged) {
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Data randomWriteData = DataFixture::generate(testData.count.value(), 2);
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WriteFile(FILENAME, randomWriteData.data(), testData.count, testData.offset);
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EXPECT_TRUE(testFile->sizeUnchanged());
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EXPECT_TRUE(testFile->regionUnchanged(fspp::num_bytes_t(0), testData.offset));
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EXPECT_TRUE(testFile->regionUnchanged(testData.offset + testData.count, testData.additional_bytes_at_end_of_file));
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}
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