forked from lix-project/lix
eldritch horrors
a5d1f69841
this is cursed. deeply and profoundly cursed. under NO CIRCUMSTANCES
must protocol serializer helpers be applied to temporaries! doing so
will inevitably cause dangling references and cause the entire thing
to crash. we need to do this even so to get rid of boost coroutines,
and likewise to encapsulate the serializers we suffer today at least
a little bit to allow a gradual migration to an actual IPC protocol.
(this isn't a problem that's unique to generators. c++ coroutines in
general cannot safely take references to arbitrary temporaries since
c++ does not have a lifetime system that can make this safe. -sigh-)
Change-Id: I2921ba451e04d86798752d140885d3c5cc08e146
87 lines
2.1 KiB
C++
87 lines
2.1 KiB
C++
#include <nlohmann/json.hpp>
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#include <gtest/gtest.h>
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#include "tests/libstore.hh"
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#include "tests/characterization.hh"
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namespace nix {
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template<class Proto, const char * protocolDir>
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class ProtoTest : public LibStoreTest
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{
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protected:
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Path unitTestData = getUnitTestData() + "/libstore/" + protocolDir;
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Path goldenMaster(std::string_view testStem) {
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return unitTestData + "/" + testStem + ".bin";
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}
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};
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template<class Proto, const char * protocolDir>
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class VersionedProtoTest : public ProtoTest<Proto, protocolDir>
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{
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public:
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/**
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* Golden test for `T` reading
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*/
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template<typename T>
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void readTest(PathView testStem, typename Proto::Version version, T value)
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{
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if (testAccept())
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{
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GTEST_SKIP() << cannotReadGoldenMaster;
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}
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else
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{
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auto expected = readFile(ProtoTest<Proto, protocolDir>::goldenMaster(testStem));
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T got = ({
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StringSource from { expected };
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Proto::template Serialise<T>::read(
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*LibStoreTest::store,
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typename Proto::ReadConn {from, version}
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);
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});
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ASSERT_EQ(got, value);
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}
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}
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/**
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* Golden test for `T` write
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*/
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template<typename T>
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void writeTest(PathView testStem, typename Proto::Version version, const T & value)
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{
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auto file = ProtoTest<Proto, protocolDir>::goldenMaster(testStem);
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StringSink to;
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to << Proto::write(
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*LibStoreTest::store,
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typename Proto::WriteConn {to, version},
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value);
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if (testAccept())
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{
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createDirs(dirOf(file));
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writeFile(file, to.s);
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GTEST_SKIP() << updatingGoldenMaster;
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}
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else
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{
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auto expected = readFile(file);
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ASSERT_EQ(to.s, expected);
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}
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}
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};
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#define VERSIONED_CHARACTERIZATION_TEST(FIXTURE, NAME, STEM, VERSION, VALUE) \
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TEST_F(FIXTURE, NAME ## _read) { \
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readTest(STEM, VERSION, VALUE); \
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} \
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TEST_F(FIXTURE, NAME ## _write) { \
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writeTest(STEM, VERSION, VALUE); \
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}
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}
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