89 lines
2.1 KiB
C++
89 lines
2.1 KiB
C++
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#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 "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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/**
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* Read this as simply `using S = Inner::Serialise;`.
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*
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* See `LengthPrefixedProtoHelper::S` for the same trick, and its
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* rationale.
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*/
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template<typename U> using S = typename Proto::template Serialise<U>;
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public:
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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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* Golden test for `T` reading
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*/
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template<typename T>
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void readTest(PathView testStem, T value)
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{
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if (testAccept())
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{
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GTEST_SKIP() << "Cannot read golden master because another test is also updating it";
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}
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else
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{
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auto expected = readFile(goldenMaster(testStem));
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T got = ({
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StringSource from { expected };
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S<T>::read(
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*store,
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typename Proto::ReadConn { .from = from });
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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, const T & value)
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{
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auto file = goldenMaster(testStem);
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StringSink to;
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Proto::write(
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*store,
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typename Proto::WriteConn { .to = to },
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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() << "Updating golden master";
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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 CHARACTERIZATION_TEST(FIXTURE, NAME, STEM, VALUE) \
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TEST_F(FIXTURE, NAME ## _read) { \
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readTest(STEM, VALUE); \
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} \
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TEST_F(FIXTURE, NAME ## _write) { \
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writeTest(STEM, VALUE); \
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}
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}
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