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Commit a16436d5 authored by Daniel Zheng's avatar Daniel Zheng
Browse files

Adding test for reader compatibility 

Reader + Parser v3 should be able to read V2 cow format written to disk.
This test reads in a small cow file written by basic_v2_cow_writer and
parses it to ensure this compatibility checks out.

Test: cow_api_test
Change-Id: I46ebf4e3f12cdb3e4716ca5b624aab5836086733
parent 310e7ae4

fs_mgr/libsnapshot/Android.bp

+3 −0
Original line number Original line Diff line number Diff line
@@ -415,6 +415,9 @@ cc_test { 
    test_options: {

    test_options: {

        min_shipping_api_level: 30,

        min_shipping_api_level: 30,

    },

    },

    data: [

        "tools/testdata/cow_v2",

    ],

    auto_gen_config: true,

    auto_gen_config: true,

    require_root: false,

    require_root: false,

    host_supported: true,

    host_supported: true,

fs_mgr/libsnapshot/libsnapshot_cow/test_v2.cpp

+31 −0
Original line number Original line Diff line number Diff line
@@ -1504,6 +1504,37 @@ TEST_F(CowTest, InvalidMergeOrderTest) { 
    ASSERT_FALSE(reader.VerifyMergeOps());

    ASSERT_FALSE(reader.VerifyMergeOps());

}

}





unique_fd OpenTestFile(const std::string& file, int flags) {

    std::string path = "tools/testdata/" + file;



    unique_fd fd(open(path.c_str(), flags));

    if (fd >= 0) {

        return fd;

    }



    path = android::base::GetExecutableDirectory() + "/" + path;

    return unique_fd{open(path.c_str(), flags)};

}



TEST_F(CowTest, CompatibilityTest) {

    std::string filename = "cow_v2";

    auto fd = OpenTestFile(filename, O_RDONLY);

    if (fd.get() == -1) {

        LOG(ERROR) << filename << " not found";

        GTEST_SKIP();

    }

    CowReader reader;

    reader.Parse(fd);



    const auto& header = reader.GetHeader();

    ASSERT_EQ(header.prefix.magic, kCowMagicNumber);

    ASSERT_EQ(header.prefix.major_version, kCowVersionMajor);

    ASSERT_EQ(header.prefix.minor_version, kCowVersionMinor);



    CowFooter footer;

    ASSERT_TRUE(reader.GetFooter(&footer));

}



}  // namespace snapshot

}  // namespace snapshot

}  // namespace android

}  // namespace android