mirror of
https://github.com/NixOS/nix
synced 2025-06-27 21:01:16 +02:00
15658b259f
The short answer for why we need to do this is so we can consistently do
`#include "nix/..."`. Without this change, there are ways to still make
that work, but they are hacky, and they have downsides such as making it
harder to make sure headers from the wrong Nix library (e..g.
`libnixexpr` headers in `libnixutil`) aren't being used.
The C API alraedy used `nix_api_*`, so its headers are *not* put in
subdirectories accordingly.
Progress on #7876
We resisted doing this for a while because it would be annoying to not
have the header source file pairs close by / easy to change file
path/name from one to the other. But I am ameliorating that with
symlinks in the next commit.
(cherry picked from commit f3e1c47f47)
134 lines
4 KiB
C++
134 lines
4 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 "nix/tests/path.hh"
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#include "nix/tests/libexpr.hh"
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#include "nix/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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ExperimentalFeatureSettings xpSettings;
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xpSettings.set("experimental-features", "dynamic-derivations");
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RC_ASSERT(o == NixStringContextElem::parse(o.to_string(), xpSettings));
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}
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#endif
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}
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