Rename test helpers file

helpers_test.go

@@ -0,0 +1,98 @@
+package main
+
+import (
+	"io/ioutil"
+	"os"
+	"path"
+	"testing"
+	"time"
+
+	"github.com/pkg/errors"
+
+	git "github.com/libgit2/git2go/v30"
+)
+
+func checkFatal(t *testing.T, err error) {
+	if err != nil {
+		t.Fatalf("%+v", err)
+	}
+}
+
+func cleanupRepo(t *testing.T, repo *git.Repository) {
+	err := os.RemoveAll(repo.Workdir())
+	if err != nil {
+		t.Errorf("failed cleaning up repo")
+	}
+}
+
+func newTestRepo() (*git.Repository, error) {
+	dir, err := ioutil.TempDir("", "test-repo-")
+	if err != nil {
+		return nil, errors.Wrap(err, "failed creating a temp repo")
+	}
+
+	repo, err := git.InitRepository(dir, false)
+	if err != nil {
+		return nil, errors.Wrap(err, "failed initializing a temp repo")
+	}
+
+	return repo, nil
+}
+
+func createFile(repo *git.Repository, name string) error {
+	err := ioutil.WriteFile(path.Join(repo.Workdir(), name), []byte("I'm a file"), 0644)
+	if err != nil {
+		return errors.Wrap(err, "failed writing a file")
+	}
+
+	return nil
+}
+
+func stageFile(repo *git.Repository, name string) error {
+	index, err := repo.Index()
+	if err != nil {
+		return errors.Wrap(err, "failed getting repo index")
+	}
+
+	err = index.AddByPath(name)
+	if err != nil {
+		return errors.Wrap(err, "failed adding file to index")
+	}
+
+	err = index.Write()
+	if err != nil {
+		return errors.Wrap(err, "failed writing index")
+	}
+
+	return nil
+}
+
+func createCommit(repo *git.Repository, message string) error {
+	index, err := repo.Index()
+	if err != nil {
+		return errors.Wrap(err, "failed creating a temp repo")
+	}
+
+	treeId, err := index.WriteTree()
+	if err != nil {
+		return errors.Wrap(err, "failed building tree from index")
+	}
+
+	tree, err := repo.LookupTree(treeId)
+	if err != nil {
+		return errors.Wrap(err, "failed looking up tree")
+	}
+
+	signature := &git.Signature{
+		Name:  "Some Guy",
+		Email: "someguy@example.com",
+		When:  time.Date(2000, 01, 01, 16, 00, 00, 0, time.UTC),
+	}
+
+	_, err = repo.CreateCommit("HEAD", signature, signature, message, tree)
+	if err != nil {
+		return errors.Wrap(err, "failed creating commit")
+	}
+
+	return nil
+}