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Create EvalState::coerceToDerivedPath

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This gives us some round trips to test.

`EvalState::coerceToDerivedPathUnchecked` is a factored out helper just
for unit testing.
This commit is contained in:
John Ericson 2023-05-10 19:25:52 -04:00
parent 8e1a990268
commit 5a23b80b0a
3 changed files with 162 additions and 0 deletions
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65
src/libexpr/tests/derived-path.cc Normal file
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#include <nlohmann/json.hpp>
#include <gtest/gtest.h>
#include <rapidcheck/gtest.h>
#include "tests/derived-path.hh"
#include "tests/libexpr.hh"
namespace nix {
// Testing of trivial expressions
class DerivedPathExpressionTest : public LibExprTest {};
// FIXME: `RC_GTEST_FIXTURE_PROP` isn't calling `SetUpTestSuite` because it is
// no a real fixture.
//
// See https://github.com/emil-e/rapidcheck/blob/master/doc/gtest.md#rc_gtest_fixture_propfixture-name-args
TEST_F(DerivedPathExpressionTest, force_init)
{
}
RC_GTEST_FIXTURE_PROP(
DerivedPathExpressionTest,
prop_opaque_path_round_trip,
(const DerivedPath::Opaque & o))
{
auto * v = state.allocValue();
state.mkStorePathString(o.path, *v);
auto d = state.coerceToDerivedPath(noPos, *v, "");
RC_ASSERT(DerivedPath { o } == d);
}
// TODO use DerivedPath::Built for parameter once it supports a single output
// path only.
RC_GTEST_FIXTURE_PROP(
DerivedPathExpressionTest,
prop_built_path_placeholder_round_trip,
(const StorePath & drvPath, const StorePathName & outputName))
{
auto * v = state.allocValue();
state.mkOutputString(*v, drvPath, outputName.name, std::nullopt);
auto [d, _] = state.coerceToDerivedPathUnchecked(noPos, *v, "");
DerivedPath::Built b {
.drvPath = drvPath,
.outputs = OutputsSpec::Names { outputName.name },
};
RC_ASSERT(DerivedPath { b } == d);
}
RC_GTEST_FIXTURE_PROP(
DerivedPathExpressionTest,
prop_built_path_out_path_round_trip,
(const StorePath & drvPath, const StorePathName & outputName, const StorePath & outPath))
{
auto * v = state.allocValue();
state.mkOutputString(*v, drvPath, outputName.name, outPath);
auto [d, _] = state.coerceToDerivedPathUnchecked(noPos, *v, "");
DerivedPath::Built b {
.drvPath = drvPath,
.outputs = OutputsSpec::Names { outputName.name },
};
RC_ASSERT(DerivedPath { b } == d);
}
} /* namespace nix */