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https://github.com/privatevoid-net/nix-super.git
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91b6833686
Today, with the tests inside a `tests` intermingled with the
corresponding library's source code, we have a few problems:
- We have to be careful that wildcards don't end up with tests being
built as part of Nix proper, or test headers being installed as part
of Nix proper.
- Tests in libraries but not executables is not right:
- It means each executable runs the previous unit tests again, because
it needs the libraries.
- It doesn't work right on Windows, which doesn't want you to load a
DLL just for the side global variable . It could be made to work
with the dlopen equivalent, but that's gross!
This reorg solves these problems.
There is a remaining problem which is that sibbling headers (like
`hash.hh` the test header vs `hash.hh` the main `libnixutil` header) end
up shadowing each other. This PR doesn't solve that. That is left as
future work for a future PR.
Co-authored-by: Valentin Gagarin <valentin.gagarin@tweag.io>
132 lines
3.9 KiB
C++
132 lines
3.9 KiB
C++
#include <nlohmann/json.hpp>
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#include <gtest/gtest.h>
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#include <rapidcheck/gtest.h>
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#include "tests/path.hh"
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#include "tests/libexpr.hh"
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#include "tests/value/context.hh"
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namespace nix {
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// Test a few cases of invalid string context elements.
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TEST(NixStringContextElemTest, empty_invalid) {
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EXPECT_THROW(
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NixStringContextElem::parse(""),
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BadNixStringContextElem);
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}
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TEST(NixStringContextElemTest, single_bang_invalid) {
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EXPECT_THROW(
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NixStringContextElem::parse("!"),
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BadNixStringContextElem);
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}
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TEST(NixStringContextElemTest, double_bang_invalid) {
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EXPECT_THROW(
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NixStringContextElem::parse("!!/"),
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BadStorePath);
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}
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TEST(NixStringContextElemTest, eq_slash_invalid) {
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EXPECT_THROW(
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NixStringContextElem::parse("=/"),
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BadStorePath);
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}
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TEST(NixStringContextElemTest, slash_invalid) {
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EXPECT_THROW(
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NixStringContextElem::parse("/"),
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BadStorePath);
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}
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/**
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* Round trip (string <-> data structure) test for
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* `NixStringContextElem::Opaque`.
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*/
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TEST(NixStringContextElemTest, opaque) {
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std::string_view opaque = "g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-x";
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auto elem = NixStringContextElem::parse(opaque);
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auto * p = std::get_if<NixStringContextElem::Opaque>(&elem.raw);
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ASSERT_TRUE(p);
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ASSERT_EQ(p->path, StorePath { opaque });
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ASSERT_EQ(elem.to_string(), opaque);
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}
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/**
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* Round trip (string <-> data structure) test for
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* `NixStringContextElem::DrvDeep`.
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*/
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TEST(NixStringContextElemTest, drvDeep) {
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std::string_view drvDeep = "=g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-x.drv";
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auto elem = NixStringContextElem::parse(drvDeep);
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auto * p = std::get_if<NixStringContextElem::DrvDeep>(&elem.raw);
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ASSERT_TRUE(p);
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ASSERT_EQ(p->drvPath, StorePath { drvDeep.substr(1) });
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ASSERT_EQ(elem.to_string(), drvDeep);
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}
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/**
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* Round trip (string <-> data structure) test for a simpler
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* `NixStringContextElem::Built`.
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*/
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TEST(NixStringContextElemTest, built_opaque) {
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std::string_view built = "!foo!g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-x.drv";
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auto elem = NixStringContextElem::parse(built);
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auto * p = std::get_if<NixStringContextElem::Built>(&elem.raw);
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ASSERT_TRUE(p);
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ASSERT_EQ(p->output, "foo");
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ASSERT_EQ(*p->drvPath, ((SingleDerivedPath) SingleDerivedPath::Opaque {
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.path = StorePath { built.substr(5) },
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}));
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ASSERT_EQ(elem.to_string(), built);
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}
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/**
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* Round trip (string <-> data structure) test for a more complex,
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* inductive `NixStringContextElem::Built`.
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*/
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TEST(NixStringContextElemTest, built_built) {
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/**
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* We set these in tests rather than the regular globals so we don't have
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* to worry about race conditions if the tests run concurrently.
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*/
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ExperimentalFeatureSettings mockXpSettings;
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mockXpSettings.set("experimental-features", "dynamic-derivations ca-derivations");
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std::string_view built = "!foo!bar!g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-x.drv";
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auto elem = NixStringContextElem::parse(built, mockXpSettings);
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auto * p = std::get_if<NixStringContextElem::Built>(&elem.raw);
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ASSERT_TRUE(p);
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ASSERT_EQ(p->output, "foo");
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auto * drvPath = std::get_if<SingleDerivedPath::Built>(&*p->drvPath);
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ASSERT_TRUE(drvPath);
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ASSERT_EQ(drvPath->output, "bar");
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ASSERT_EQ(*drvPath->drvPath, ((SingleDerivedPath) SingleDerivedPath::Opaque {
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.path = StorePath { built.substr(9) },
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}));
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ASSERT_EQ(elem.to_string(), built);
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}
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/**
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* Without the right experimental features enabled, we cannot parse a
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* complex inductive string context element.
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*/
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TEST(NixStringContextElemTest, built_built_xp) {
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ASSERT_THROW(
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NixStringContextElem::parse("!foo!bar!g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-x.drv"), MissingExperimentalFeature);
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}
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#ifndef COVERAGE
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RC_GTEST_PROP(
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NixStringContextElemTest,
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prop_round_rip,
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(const NixStringContextElem & o))
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{
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RC_ASSERT(o == NixStringContextElem::parse(o.to_string()));
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}
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#endif
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}
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