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https://github.com/NixOS/nix
synced 2025-07-07 14:21:48 +02:00
Move tests to separate directories, and document
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>
This commit is contained in:
John Ericson
parent
77adb55ae4
commit
91b6833686
134 changed files with 464 additions and 352 deletions
132
tests/unit/libexpr/value/context.cc
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132
tests/unit/libexpr/value/context.cc
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#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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237
tests/unit/libexpr/value/print.cc
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237
tests/unit/libexpr/value/print.cc
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#include "tests/libexpr.hh"
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#include "value.hh"
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namespace nix {
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using namespace testing;
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struct ValuePrintingTests : LibExprTest
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{
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template<class... A>
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void test(Value v, std::string_view expected, A... args)
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{
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std::stringstream out;
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v.print(state.symbols, out, args...);
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ASSERT_EQ(out.str(), expected);
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}
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};
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TEST_F(ValuePrintingTests, tInt)
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{
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Value vInt;
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vInt.mkInt(10);
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test(vInt, "10");
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}
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TEST_F(ValuePrintingTests, tBool)
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{
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Value vBool;
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vBool.mkBool(true);
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test(vBool, "true");
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}
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TEST_F(ValuePrintingTests, tString)
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{
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Value vString;
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vString.mkString("some-string");
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test(vString, "\"some-string\"");
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}
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TEST_F(ValuePrintingTests, tPath)
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{
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Value vPath;
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vPath.mkString("/foo");
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test(vPath, "\"/foo\"");
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}
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TEST_F(ValuePrintingTests, tNull)
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{
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Value vNull;
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vNull.mkNull();
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test(vNull, "null");
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}
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TEST_F(ValuePrintingTests, tAttrs)
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{
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Value vOne;
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vOne.mkInt(1);
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Value vTwo;
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vTwo.mkInt(2);
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BindingsBuilder builder(state, state.allocBindings(10));
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builder.insert(state.symbols.create("one"), &vOne);
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builder.insert(state.symbols.create("two"), &vTwo);
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Value vAttrs;
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vAttrs.mkAttrs(builder.finish());
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test(vAttrs, "{ one = 1; two = 2; }");
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}
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TEST_F(ValuePrintingTests, tList)
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{
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Value vOne;
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vOne.mkInt(1);
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Value vTwo;
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vTwo.mkInt(2);
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Value vList;
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state.mkList(vList, 5);
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vList.bigList.elems[0] = &vOne;
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vList.bigList.elems[1] = &vTwo;
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vList.bigList.size = 3;
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test(vList, "[ 1 2 (nullptr) ]");
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}
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TEST_F(ValuePrintingTests, vThunk)
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{
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Value vThunk;
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vThunk.mkThunk(nullptr, nullptr);
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test(vThunk, "<CODE>");
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}
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TEST_F(ValuePrintingTests, vApp)
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{
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Value vApp;
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vApp.mkApp(nullptr, nullptr);
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test(vApp, "<CODE>");
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}
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TEST_F(ValuePrintingTests, vLambda)
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{
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Value vLambda;
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vLambda.mkLambda(nullptr, nullptr);
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test(vLambda, "<LAMBDA>");
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}
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TEST_F(ValuePrintingTests, vPrimOp)
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{
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Value vPrimOp;
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PrimOp primOp{};
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vPrimOp.mkPrimOp(&primOp);
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test(vPrimOp, "<PRIMOP>");
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}
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TEST_F(ValuePrintingTests, vPrimOpApp)
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{
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Value vPrimOpApp;
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vPrimOpApp.mkPrimOpApp(nullptr, nullptr);
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test(vPrimOpApp, "<PRIMOP-APP>");
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}
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TEST_F(ValuePrintingTests, vExternal)
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{
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struct MyExternal : ExternalValueBase
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{
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public:
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std::string showType() const override
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{
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return "";
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}
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std::string typeOf() const override
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{
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return "";
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}
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virtual std::ostream & print(std::ostream & str) const override
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{
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str << "testing-external!";
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return str;
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}
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} myExternal;
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Value vExternal;
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vExternal.mkExternal(&myExternal);
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test(vExternal, "testing-external!");
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}
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TEST_F(ValuePrintingTests, vFloat)
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{
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Value vFloat;
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vFloat.mkFloat(2.0);
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test(vFloat, "2");
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}
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TEST_F(ValuePrintingTests, vBlackhole)
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{
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Value vBlackhole;
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vBlackhole.mkBlackhole();
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test(vBlackhole, "«potential infinite recursion»");
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}
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TEST_F(ValuePrintingTests, depthAttrs)
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{
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Value vOne;
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vOne.mkInt(1);
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Value vTwo;
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vTwo.mkInt(2);
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BindingsBuilder builder(state, state.allocBindings(10));
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builder.insert(state.symbols.create("one"), &vOne);
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builder.insert(state.symbols.create("two"), &vTwo);
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Value vAttrs;
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vAttrs.mkAttrs(builder.finish());
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BindingsBuilder builder2(state, state.allocBindings(10));
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builder2.insert(state.symbols.create("one"), &vOne);
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builder2.insert(state.symbols.create("two"), &vTwo);
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builder2.insert(state.symbols.create("nested"), &vAttrs);
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Value vNested;
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vNested.mkAttrs(builder2.finish());
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test(vNested, "{ nested = «too deep»; one = «too deep»; two = «too deep»; }", false, 1);
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test(vNested, "{ nested = { one = «too deep»; two = «too deep»; }; one = 1; two = 2; }", false, 2);
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test(vNested, "{ nested = { one = 1; two = 2; }; one = 1; two = 2; }", false, 3);
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test(vNested, "{ nested = { one = 1; two = 2; }; one = 1; two = 2; }", false, 4);
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}
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TEST_F(ValuePrintingTests, depthList)
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{
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Value vOne;
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vOne.mkInt(1);
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Value vTwo;
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vTwo.mkInt(2);
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BindingsBuilder builder(state, state.allocBindings(10));
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builder.insert(state.symbols.create("one"), &vOne);
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builder.insert(state.symbols.create("two"), &vTwo);
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Value vAttrs;
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vAttrs.mkAttrs(builder.finish());
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BindingsBuilder builder2(state, state.allocBindings(10));
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builder2.insert(state.symbols.create("one"), &vOne);
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builder2.insert(state.symbols.create("two"), &vTwo);
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builder2.insert(state.symbols.create("nested"), &vAttrs);
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Value vNested;
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vNested.mkAttrs(builder2.finish());
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Value vList;
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state.mkList(vList, 5);
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vList.bigList.elems[0] = &vOne;
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vList.bigList.elems[1] = &vTwo;
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vList.bigList.elems[2] = &vNested;
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vList.bigList.size = 3;
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test(vList, "[ «too deep» «too deep» «too deep» ]", false, 1);
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test(vList, "[ 1 2 { nested = «too deep»; one = «too deep»; two = «too deep»; } ]", false, 2);
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test(vList, "[ 1 2 { nested = { one = «too deep»; two = «too deep»; }; one = 1; two = 2; } ]", false, 3);
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test(vList, "[ 1 2 { nested = { one = 1; two = 2; }; one = 1; two = 2; } ]", false, 4);
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test(vList, "[ 1 2 { nested = { one = 1; two = 2; }; one = 1; two = 2; } ]", false, 5);
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}
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} // namespace nix
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