Add a test and some comments as to the ugly pointer arithmetic

1 files changed, 42 insertions, 0 deletions

diff --git a/repository_test.go b/repository_test.go
new file mode 100644
index 0000000..1950c69
--- /dev/null
+++ b/repository_test.go
@@ -0,0 +1,42 @@
+package git
+
+import (
+	"testing"
+	"time"
+)
+
+func TestCreateCommitFromIds(t *testing.T) {
+	t.Parallel()
+	repo := createTestRepo(t)
+	defer cleanupTestRepo(t, repo)
+
+	loc, err := time.LoadLocation("Europe/Berlin")
+	checkFatal(t, err)
+	sig := &Signature{
+		Name:  "Rand Om Hacker",
+		Email: "[email protected]",
+		When:  time.Date(2013, 03, 06, 14, 30, 0, 0, loc),
+	}
+
+	idx, err := repo.Index()
+	checkFatal(t, err)
+	err = idx.AddByPath("README")
+	checkFatal(t, err)
+	err = idx.Write()
+	checkFatal(t, err)
+	treeId, err := idx.WriteTree()
+	checkFatal(t, err)
+
+	message := "This is a commit\n"
+	tree, err := repo.LookupTree(treeId)
+	checkFatal(t, err)
+	expectedCommitId, err := repo.CreateCommit("HEAD", sig, sig, message, tree)
+	checkFatal(t, err)
+
+	commitId, err := repo.CreateCommitFromIds("", sig, sig, message, treeId)
+	checkFatal(t, err)
+
+	if !expectedCommitId.Equal(commitId) {
+		t.Errorf("mismatched commit ids, expected %v, got %v", expectedCommitId.String(), commitId.String())
+	}
+}