85 lines
3.1 KiB
C++
85 lines
3.1 KiB
C++
#include <messmer/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 "../../../fuse/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::StrEq;
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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::Eq;
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using ::testing::Return;
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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 std::min;
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using std::unique_ptr;
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using std::make_unique;
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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<size_t, off_t, size_t> &data): count(get<0>(data)), offset(get<1>(data)), additional_bytes_at_end_of_file(get<2>(data)) {}
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size_t count;
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off_t offset;
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//How many more bytes does the file have after the read block?
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size_t additional_bytes_at_end_of_file;
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size_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<size_t, off_t, size_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 = make_unique<WriteableInMemoryFile>(DataFixture::generate(testData.fileSize(), 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*, size_t, off_t)> WriteToFile = Invoke([this](int, const void *buf, size_t count, off_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(Values(0,1,10,1000,1024, 10*1024*1024), Values(0, 1, 10, 1024, 10*1024*1024), Values(0, 1, 10, 1024, 10*1024*1024)));
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TEST_P(FuseWriteDataTest, DataWasCorrectlyWritten) {
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Data randomWriteData = DataFixture::generate(testData.count, 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, 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(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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