forked from lix-project/lix
Merge "tests/compression: rewrite" into main
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Gerrit Code Review
commit
0943b214c9
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@ -3,105 +3,137 @@
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namespace nix {
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/* ----------------------------------------------------------------------------
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* compress / decompress
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* --------------------------------------------------------------------------*/
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TEST(compress, compressWithUnknownMethod) {
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ASSERT_THROW(compress("invalid-method", "something-to-compress"), UnknownCompressionMethod);
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}
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TEST(compress, noneMethodDoesNothingToTheInput) {
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auto o = compress("none", "this-is-a-test");
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ASSERT_EQ(o, "this-is-a-test");
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}
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TEST(decompress, decompressNoneCompressed) {
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auto method = "none";
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auto str = "slfja;sljfklsa;jfklsjfkl;sdjfkl;sadjfkl;sdjf;lsdfjsadlf";
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auto o = decompress(method, str);
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ASSERT_EQ(o, str);
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}
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TEST(decompress, decompressEmptyCompressed) {
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// Empty-method decompression used e.g. by S3 store
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// (Content-Encoding == "").
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auto method = "";
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auto str = "slfja;sljfklsa;jfklsjfkl;sdjfkl;sadjfkl;sdjf;lsdfjsadlf";
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auto o = decompress(method, str);
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ASSERT_EQ(o, str);
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}
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TEST(decompress, decompressXzCompressed) {
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auto method = "xz";
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auto str = "slfja;sljfklsa;jfklsjfkl;sdjfkl;sadjfkl;sdjf;lsdfjsadlf";
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auto o = decompress(method, compress(method, str));
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ASSERT_EQ(o, str);
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}
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TEST(decompress, decompressBzip2Compressed) {
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auto method = "bzip2";
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auto str = "slfja;sljfklsa;jfklsjfkl;sdjfkl;sadjfkl;sdjf;lsdfjsadlf";
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auto o = decompress(method, compress(method, str));
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ASSERT_EQ(o, str);
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}
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TEST(decompress, decompressBrCompressed) {
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auto method = "br";
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auto str = "slfja;sljfklsa;jfklsjfkl;sdjfkl;sadjfkl;sdjf;lsdfjsadlf";
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auto o = decompress(method, compress(method, str));
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ASSERT_EQ(o, str);
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}
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TEST(decompress, decompressInvalidInputThrowsCompressionError) {
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auto method = "bzip2";
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auto str = "this is a string that does not qualify as valid bzip2 data";
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ASSERT_THROW(decompress(method, str), CompressionError);
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}
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TEST(decompress, veryLongBrotli) {
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auto method = "br";
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auto str = std::string(65536, 'a');
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auto o = decompress(method, compress(method, str));
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// This is just to not print 64k of "a" for most failures
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ASSERT_EQ(o.length(), str.length());
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ASSERT_EQ(o, str);
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}
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/* ----------------------------------------------------------------------------
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* compression sinks
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* --------------------------------------------------------------------------*/
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TEST(makeCompressionSink, noneSinkDoesNothingToInput) {
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StringSink strSink;
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auto inputString = "slfja;sljfklsa;jfklsjfkl;sdjfkl;sadjfkl;sdjf;lsdfjsadlf";
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auto sink = makeCompressionSink("none", strSink);
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(*sink)(inputString);
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sink->finish();
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ASSERT_STREQ(strSink.s.c_str(), inputString);
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}
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TEST(makeCompressionSink, compressAndDecompress) {
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auto inputString = "slfja;sljfklsa;jfklsjfkl;sdjfkl;sadjfkl;sdjf;lsdfjsadlf";
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StringSink strSink;
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auto sink = makeCompressionSink("bzip2", strSink);
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(*sink)(inputString);
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sink->finish();
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StringSource strSource{strSink.s};
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auto decompressionSource = makeDecompressionSource("bzip2", strSource);
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ASSERT_STREQ(decompressionSource->drain().c_str(), inputString);
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}
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/* ----------------------------------------------------------------------------
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* compress / decompress
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* --------------------------------------------------------------------------*/
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TEST(compress, compressWithUnknownMethod)
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{
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ASSERT_THROW(compress("invalid-method", "something-to-compress"), UnknownCompressionMethod);
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}
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TEST(compress, noneMethodDoesNothingToTheInput)
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{
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auto o = compress("none", "this-is-a-test");
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ASSERT_EQ(o, "this-is-a-test");
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}
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TEST(decompress, decompressEmptyString)
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{
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// Empty-method decompression used e.g. by S3 store
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// (Content-Encoding == "").
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auto o = decompress("", "this-is-a-test");
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ASSERT_EQ(o, "this-is-a-test");
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}
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/* ----------------------------------------------------------------------------
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* compression sinks
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* --------------------------------------------------------------------------*/
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TEST(makeCompressionSink, noneSinkDoesNothingToInput)
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{
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auto method = "none";
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StringSink strSink;
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auto inputString = "slfja;sljfklsa;jfklsjfkl;sdjfkl;sadjfkl;sdjf;lsdfjsadlf";
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auto sink = makeCompressionSink(method, strSink);
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(*sink)(inputString);
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sink->finish();
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ASSERT_STREQ(strSink.s.c_str(), inputString);
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}
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/** Tests applied to all compression types */
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class PerTypeCompressionTest : public testing::TestWithParam<const char *>
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{};
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/** Tests applied to non-passthrough compression types */
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class PerTypeNonNullCompressionTest : public testing::TestWithParam<const char *>
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{};
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constexpr const char * COMPRESSION_TYPES_NONNULL[] = {
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// libarchive
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"bzip2",
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"compress",
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"gzip",
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"lzip",
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"lzma",
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"xz",
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"zstd",
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// Uses external program via libarchive so cannot be used :(
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/*
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"grzip",
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"lrzip",
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"lzop",
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"lz4",
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*/
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// custom
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"br",
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};
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INSTANTIATE_TEST_SUITE_P(
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compressionNonNull, PerTypeNonNullCompressionTest, testing::ValuesIn(COMPRESSION_TYPES_NONNULL)
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);
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INSTANTIATE_TEST_SUITE_P(
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compressionNonNull, PerTypeCompressionTest, testing::ValuesIn(COMPRESSION_TYPES_NONNULL)
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);
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INSTANTIATE_TEST_SUITE_P(
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compressionNull, PerTypeCompressionTest, testing::Values("none")
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);
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/* ---------------------------------------
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* All compression types
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* --------------------------------------- */
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TEST_P(PerTypeCompressionTest, roundTrips)
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{
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auto method = GetParam();
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auto str = "slfja;sljfklsa;jfklsjfkl;sdjfkl;sadjfkl;sdjf;lsdfjsadlf";
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auto o = decompress(method, compress(method, str));
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ASSERT_EQ(o, str);
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}
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TEST_P(PerTypeCompressionTest, longerThanBuffer)
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{
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// This is targeted originally at regression testing a brotli bug, but we might as well do it to
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// everything
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auto method = GetParam();
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auto str = std::string(65536, 'a');
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auto o = decompress(method, compress(method, str));
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// This is just to not print 64k of "a" for most failures
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ASSERT_EQ(o.length(), str.length());
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ASSERT_EQ(o, str);
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}
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TEST_P(PerTypeCompressionTest, sinkAndSource)
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{
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auto method = GetParam();
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auto inputString = "slfja;sljfklsa;jfklsjfkl;sdjfkl;sadjfkl;sdjf;lsdfjsadlf";
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StringSink strSink;
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auto sink = makeCompressionSink(method, strSink);
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(*sink)(inputString);
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sink->finish();
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StringSource strSource{strSink.s};
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auto decompressionSource = makeDecompressionSource(method, strSource);
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ASSERT_STREQ(decompressionSource->drain().c_str(), inputString);
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}
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/* ---------------------------------------
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* Non null compression types
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* --------------------------------------- */
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TEST_P(PerTypeNonNullCompressionTest, bogusInputDecompression)
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{
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auto param = GetParam();
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auto bogus = "this data is bogus and should throw when decompressing";
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ASSERT_THROW(decompress(param, bogus), CompressionError);
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}
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}
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