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#include "compression.hh"
#include <gtest/gtest.h>
namespace nix {
/* ----------------------------------------------------------------------------
* compress / decompress
* --------------------------------------------------------------------------*/
TEST(compress, compressWithUnknownMethod) {
ASSERT_THROW(compress("invalid-method", "something-to-compress"), UnknownCompressionMethod);
}
TEST(compress, noneMethodDoesNothingToTheInput) {
auto o = compress("none", "this-is-a-test");
ASSERT_EQ(o, "this-is-a-test");
}
TEST(decompress, decompressNoneCompressed) {
auto method = "none";
auto str = "slfja;sljfklsa;jfklsjfkl;sdjfkl;sadjfkl;sdjf;lsdfjsadlf";
auto o = decompress(method, str);
ASSERT_EQ(o, str);
}
TEST(decompress, decompressEmptyCompressed) {
// Empty-method decompression used e.g. by S3 store
// (Content-Encoding == "").
auto method = "";
auto str = "slfja;sljfklsa;jfklsjfkl;sdjfkl;sadjfkl;sdjf;lsdfjsadlf";
auto o = decompress(method, str);
ASSERT_EQ(o, str);
}
TEST(decompress, decompressXzCompressed) {
auto method = "xz";
auto str = "slfja;sljfklsa;jfklsjfkl;sdjfkl;sadjfkl;sdjf;lsdfjsadlf";
auto o = decompress(method, compress(method, str));
ASSERT_EQ(o, str);
}
TEST(decompress, decompressBzip2Compressed) {
auto method = "bzip2";
auto str = "slfja;sljfklsa;jfklsjfkl;sdjfkl;sadjfkl;sdjf;lsdfjsadlf";
auto o = decompress(method, compress(method, str));
ASSERT_EQ(o, str);
}
TEST(decompress, decompressBrCompressed) {
auto method = "br";
auto str = "slfja;sljfklsa;jfklsjfkl;sdjfkl;sadjfkl;sdjf;lsdfjsadlf";
auto o = decompress(method, compress(method, str));
ASSERT_EQ(o, str);
}
TEST(decompress, decompressInvalidInputThrowsCompressionError) {
auto method = "bzip2";
auto str = "this is a string that does not qualify as valid bzip2 data";
ASSERT_THROW(decompress(method, str), CompressionError);
}
TEST(decompress, veryLongBrotli) {
auto method = "br";
auto str = std::string(65536, 'a');
auto o = decompress(method, compress(method, str));
// This is just to not print 64k of "a" for most failures
ASSERT_EQ(o.length(), str.length());
ASSERT_EQ(o, str);
}
/* ----------------------------------------------------------------------------
* compression sinks
* --------------------------------------------------------------------------*/
TEST(makeCompressionSink, noneSinkDoesNothingToInput) {
StringSink strSink;
auto inputString = "slfja;sljfklsa;jfklsjfkl;sdjfkl;sadjfkl;sdjf;lsdfjsadlf";
auto sink = makeCompressionSink("none", strSink);
(*sink)(inputString);
sink->finish();
ASSERT_STREQ(strSink.s.c_str(), inputString);
}
TEST(makeCompressionSink, compressAndDecompress) {
auto inputString = "slfja;sljfklsa;jfklsjfkl;sdjfkl;sadjfkl;sdjf;lsdfjsadlf";
StringSink strSink;
auto sink = makeCompressionSink("bzip2", strSink);
(*sink)(inputString);
sink->finish();
StringSource strSource{strSink.s};
auto decompressionSource = makeDecompressionSource("bzip2", strSource);
ASSERT_STREQ(decompressionSource->drain().c_str(), inputString);
}
}
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