mirror of
https://github.com/NixOS/nix.git
synced 2024-11-25 16:23:02 +00:00
113 lines
3.7 KiB
C++
113 lines
3.7 KiB
C++
#include "git-utils.hh"
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#include "file-system.hh"
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#include "gmock/gmock.h"
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#include <git2/global.h>
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#include <git2/repository.h>
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#include <git2/types.h>
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#include <gtest/gtest.h>
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#include "fs-sink.hh"
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#include "serialise.hh"
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namespace nix {
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class GitUtilsTest : public ::testing::Test
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{
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// We use a single repository for all tests.
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Path tmpDir;
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std::unique_ptr<AutoDelete> delTmpDir;
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public:
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void SetUp() override
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{
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tmpDir = createTempDir();
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delTmpDir = std::make_unique<AutoDelete>(tmpDir, true);
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// Create the repo with libgit2
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git_libgit2_init();
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git_repository * repo = nullptr;
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auto r = git_repository_init(&repo, tmpDir.c_str(), 0);
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ASSERT_EQ(r, 0);
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git_repository_free(repo);
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}
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void TearDown() override
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{
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// Destroy the AutoDelete, triggering removal
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// not AutoDelete::reset(), which would cancel the deletion.
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delTmpDir.reset();
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}
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ref<GitRepo> openRepo()
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{
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return GitRepo::openRepo(tmpDir, true, false);
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}
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};
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void writeString(CreateRegularFileSink & fileSink, std::string contents, bool executable)
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{
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if (executable)
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fileSink.isExecutable();
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fileSink.preallocateContents(contents.size());
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fileSink(contents);
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}
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TEST_F(GitUtilsTest, sink_basic)
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{
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auto repo = openRepo();
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auto sink = repo->getFileSystemObjectSink();
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// TODO/Question: It seems a little odd that we use the tarball-like convention of requiring a top-level directory
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// here
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// The sync method does not document this behavior, should probably renamed because it's not very
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// general, and I can't imagine that "non-conventional" archives or any other source to be handled by
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// this sink.
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sink->createDirectory(CanonPath("foo-1.1"));
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sink->createRegularFile(CanonPath("foo-1.1/hello"), [](CreateRegularFileSink & fileSink) {
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writeString(fileSink, "hello world", false);
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});
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sink->createRegularFile(CanonPath("foo-1.1/bye"), [](CreateRegularFileSink & fileSink) {
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writeString(fileSink, "thanks for all the fish", false);
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});
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sink->createSymlink(CanonPath("foo-1.1/bye-link"), "bye");
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sink->createDirectory(CanonPath("foo-1.1/empty"));
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sink->createDirectory(CanonPath("foo-1.1/links"));
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sink->createHardlink(CanonPath("foo-1.1/links/foo"), CanonPath("foo-1.1/hello"));
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// sink->createHardlink("foo-1.1/links/foo-2", CanonPath("foo-1.1/hello"));
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auto result = repo->dereferenceSingletonDirectory(sink->sync());
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auto accessor = repo->getAccessor(result, false);
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auto entries = accessor->readDirectory(CanonPath::root);
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ASSERT_EQ(entries.size(), 5);
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ASSERT_EQ(accessor->readFile(CanonPath("hello")), "hello world");
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ASSERT_EQ(accessor->readFile(CanonPath("bye")), "thanks for all the fish");
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ASSERT_EQ(accessor->readLink(CanonPath("bye-link")), "bye");
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ASSERT_EQ(accessor->readDirectory(CanonPath("empty")).size(), 0);
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ASSERT_EQ(accessor->readFile(CanonPath("links/foo")), "hello world");
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};
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TEST_F(GitUtilsTest, sink_hardlink)
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{
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auto repo = openRepo();
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auto sink = repo->getFileSystemObjectSink();
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sink->createDirectory(CanonPath("foo-1.1"));
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sink->createRegularFile(CanonPath("foo-1.1/hello"), [](CreateRegularFileSink & fileSink) {
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writeString(fileSink, "hello world", false);
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});
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try {
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sink->createHardlink(CanonPath("foo-1.1/link"), CanonPath("hello"));
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FAIL() << "Expected an exception";
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} catch (const nix::Error & e) {
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ASSERT_THAT(e.msg(), testing::HasSubstr("cannot find hard link target"));
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ASSERT_THAT(e.msg(), testing::HasSubstr("/hello"));
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ASSERT_THAT(e.msg(), testing::HasSubstr("foo-1.1/link"));
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}
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};
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} // namespace nix
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