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package updateref
import (
"context"
"fmt"
"os"
"testing"
"github.com/stretchr/testify/require"
"gitlab.com/gitlab-org/gitaly/internal/git"
"gitlab.com/gitlab-org/gitaly/internal/git/hooks"
"gitlab.com/gitlab-org/gitaly/internal/git/log"
"gitlab.com/gitlab-org/gitaly/internal/testhelper"
"gitlab.com/gitlab-org/gitaly/proto/go/gitalypb"
)
func TestMain(m *testing.M) {
os.Exit(testMain(m))
}
func testMain(m *testing.M) int {
defer testhelper.MustHaveNoChildProcess()
cleanup := testhelper.Configure()
defer cleanup()
hooks.Override = "/"
return m.Run()
}
func setup(t *testing.T) (context.Context, *gitalypb.Repository, string, func()) {
ctx, cancel := testhelper.Context()
testRepo, testRepoPath, cleanup := testhelper.NewTestRepo(t)
teardown := func() {
cancel()
cleanup()
}
return ctx, testRepo, testRepoPath, teardown
}
func TestCreate(t *testing.T) {
ctx, testRepo, _, teardown := setup(t)
defer teardown()
headCommit, err := log.GetCommit(ctx, testRepo, "HEAD")
require.NoError(t, err)
updater, err := New(ctx, testRepo)
require.NoError(t, err)
ref := "refs/heads/_create"
sha := headCommit.Id
require.NoError(t, updater.Create(ref, sha))
require.NoError(t, updater.Wait())
// check the ref was created
commit, logErr := log.GetCommit(ctx, testRepo, ref)
require.NoError(t, logErr)
require.Equal(t, commit.Id, sha, "reference was created with the wrong SHA")
}
func TestUpdate(t *testing.T) {
ctx, testRepo, _, teardown := setup(t)
defer teardown()
headCommit, err := log.GetCommit(ctx, testRepo, "HEAD")
require.NoError(t, err)
updater, err := New(ctx, testRepo)
require.NoError(t, err)
ref := "refs/heads/feature"
sha := headCommit.Id
// Sanity check: ensure the ref exists before we start
commit, logErr := log.GetCommit(ctx, testRepo, ref)
require.NoError(t, logErr)
require.NotEqual(t, commit.Id, sha, "%s points to HEAD: %s in the test repository", ref, sha)
require.NoError(t, updater.Update(ref, sha, ""))
require.NoError(t, updater.Wait())
// check the ref was updated
commit, logErr = log.GetCommit(ctx, testRepo, ref)
require.NoError(t, logErr)
require.Equal(t, commit.Id, sha, "reference was not updated")
// since ref has been updated to HEAD, we know that it does not point to HEAD^. So, HEAD^ is an invalid "old value" for updating ref
parentCommit, err := log.GetCommit(ctx, testRepo, "HEAD^")
require.NoError(t, err)
require.Error(t, updater.Update(ref, parentCommit.Id, parentCommit.Id))
// check the ref was not updated
commit, logErr = log.GetCommit(ctx, testRepo, ref)
require.NoError(t, logErr)
require.NotEqual(t, commit.Id, parentCommit.Id, "reference was updated when it shouldn't have been")
}
func TestDelete(t *testing.T) {
ctx, testRepo, _, teardown := setup(t)
defer teardown()
updater, err := New(ctx, testRepo)
require.NoError(t, err)
ref := "refs/heads/feature"
require.NoError(t, updater.Delete(ref))
require.NoError(t, updater.Wait())
// check the ref was removed
_, err = log.GetCommit(ctx, testRepo, ref)
require.True(t, log.IsNotFound(err), "expected 'not found' error got %v", err)
}
func TestBulkOperation(t *testing.T) {
ctx, testRepo, _, teardown := setup(t)
defer teardown()
headCommit, err := log.GetCommit(ctx, testRepo, "HEAD")
require.NoError(t, err)
updater, err := New(ctx, testRepo)
require.NoError(t, err)
for i := 0; i < 1000; i++ {
ref := fmt.Sprintf("refs/head/_test_%d", i)
require.NoError(t, updater.Create(ref, headCommit.Id), "Failed to create ref %d", i)
}
require.NoError(t, updater.Wait())
refs, err := git.NewRepository(testRepo).GetReferences(ctx, "refs/")
require.NoError(t, err)
require.Greater(t, len(refs), 1000, "At least 1000 refs should be present")
}
func TestContextCancelAbortsRefChanges(t *testing.T) {
ctx, testRepo, _, teardown := setup(t)
defer teardown()
headCommit, err := log.GetCommit(ctx, testRepo, "HEAD")
require.NoError(t, err)
childCtx, childCancel := context.WithCancel(ctx)
updater, err := New(childCtx, testRepo)
require.NoError(t, err)
ref := "refs/heads/_shouldnotexist"
require.NoError(t, updater.Create(ref, headCommit.Id))
// Force the update-ref process to terminate early
childCancel()
require.Error(t, updater.Wait())
// check the ref doesn't exist
_, err = log.GetCommit(ctx, testRepo, ref)
require.True(t, log.IsNotFound(err), "expected 'not found' error got %v", err)
}
func TestUpdater_closingStdinAbortsChanges(t *testing.T) {
ctx, cancel := testhelper.Context()
defer cancel()
testRepo, _, cleanup := testhelper.NewTestRepo(t)
defer cleanup()
headCommit, err := log.GetCommit(ctx, testRepo, "HEAD")
require.NoError(t, err)
ref := "refs/heads/shouldnotexist"
updater, err := New(ctx, testRepo)
require.NoError(t, err)
require.NoError(t, updater.Create(ref, headCommit.Id))
// Note that we call `Wait()` on the command, not on the updater. This
// circumvents our usual semantics of sending "commit" and thus
// emulates that the command somehow terminates correctly without us
// terminating it intentionally. Previous to our use of the "start"
// verb, this would've caused the reference to be created...
require.NoError(t, updater.cmd.Wait())
// ... but as we now use explicit transactional behaviour, this is no
// longer the case.
_, err = log.GetCommit(ctx, testRepo, ref)
require.True(t, log.IsNotFound(err), "expected 'not found' error got %v", err)
}
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