diff --git a/internal/git/git_test.go b/internal/git/git_test.go
index fd5ee80..df523a0 100644
--- a/internal/git/git_test.go
+++ b/internal/git/git_test.go
@@ -3,8 +3,10 @@ package git_test
 import (
 	"path/filepath"
 	"testing"
+	"time"
 
 	"github.com/alecthomas/assert/v2"
+	"github.com/go-git/go-git/v5/plumbing/protocol/packp"
 	"go.jolheiser.com/ugit/internal/git"
 )
 
@@ -43,3 +45,232 @@ func TestRepo(t *testing.T) {
 	assert.NoError(t, err, "should not error when getting existing repo")
 	assert.False(t, repo.Meta.Private, "repo should be public after saving meta")
 }
+
+func TestPathExists(t *testing.T) {
+	tmp := t.TempDir()
+	exists, err := git.PathExists(tmp)
+	assert.NoError(t, err)
+	assert.True(t, exists)
+
+	doesNotExist := filepath.Join(tmp, "does-not-exist")
+	exists, err = git.PathExists(doesNotExist)
+	assert.NoError(t, err)
+	assert.False(t, exists)
+}
+
+func TestRepoMetaUpdate(t *testing.T) {
+	original := git.RepoMeta{
+		Description: "Original description",
+		Private:     true,
+		Tags:        git.TagSet{"tag1": struct{}{}, "tag2": struct{}{}},
+	}
+
+	update := git.RepoMeta{
+		Description: "Updated description",
+		Private:     false,
+		Tags:        git.TagSet{"tag3": struct{}{}},
+	}
+
+	err := original.Update(update)
+	assert.NoError(t, err)
+
+	assert.Equal(t, "Updated description", original.Description)
+	assert.False(t, original.Private)
+	assert.Equal(t, []string{"tag1", "tag2", "tag3"}, original.Tags.Slice())
+}
+
+func TestFileInfoName(t *testing.T) {
+	testCases := []struct {
+		path     string
+		expected string
+	}{
+		{path: "file.txt", expected: "file.txt"},
+		{path: "dir/file.txt", expected: "file.txt"},
+		{path: "nested/path/to/file.go", expected: "file.go"},
+		{path: "README.md", expected: "README.md"},
+	}
+
+	for _, tc := range testCases {
+		t.Run(tc.path, func(t *testing.T) {
+			fi := git.FileInfo{Path: tc.path}
+			assert.Equal(t, tc.expected, fi.Name())
+		})
+	}
+}
+
+func TestCommitSummaryAndDetails(t *testing.T) {
+	testCases := []struct {
+		message         string
+		expectedSummary string
+		expectedDetails string
+	}{
+		{
+			message:         "Simple commit message",
+			expectedSummary: "Simple commit message",
+			expectedDetails: "",
+		},
+		{
+			message:         "Add feature X\n\nThis commit adds feature X\nWith multiple details\nAcross multiple lines",
+			expectedSummary: "Add feature X",
+			expectedDetails: "\nThis commit adds feature X\nWith multiple details\nAcross multiple lines",
+		},
+		{
+			message:         "Fix bug\n\nDetailed explanation",
+			expectedSummary: "Fix bug",
+			expectedDetails: "\nDetailed explanation",
+		},
+	}
+
+	for _, tc := range testCases {
+		t.Run(tc.message, func(t *testing.T) {
+			commit := git.Commit{
+				SHA:       "abcdef1234567890",
+				Message:   tc.message,
+				Signature: "",
+				Author:    "Test User",
+				Email:     "test@example.com",
+				When:      time.Now(),
+			}
+
+			assert.Equal(t, tc.expectedSummary, commit.Summary())
+			assert.Equal(t, tc.expectedDetails, commit.Details())
+		})
+	}
+}
+
+func TestCommitShort(t *testing.T) {
+	commit := git.Commit{
+		SHA: "abcdef1234567890abcdef1234567890",
+	}
+
+	assert.Equal(t, "abcdef12", commit.Short())
+}
+
+func TestCommitFilePath(t *testing.T) {
+	testCases := []struct {
+		name     string
+		fromPath string
+		toPath   string
+		expected string
+	}{
+		{
+			name:     "to path preferred",
+			fromPath: "old/path.txt",
+			toPath:   "new/path.txt",
+			expected: "new/path.txt",
+		},
+		{
+			name:     "fallback to from path",
+			fromPath: "deleted/file.txt",
+			toPath:   "",
+			expected: "deleted/file.txt",
+		},
+		{
+			name:     "both paths empty",
+			fromPath: "",
+			toPath:   "",
+			expected: "",
+		},
+	}
+
+	for _, tc := range testCases {
+		t.Run(tc.name, func(t *testing.T) {
+			cf := git.CommitFile{
+				From: git.CommitFileEntry{Path: tc.fromPath},
+				To:   git.CommitFileEntry{Path: tc.toPath},
+			}
+			assert.Equal(t, tc.expected, cf.Path())
+		})
+	}
+}
+
+func TestRepoName(t *testing.T) {
+	tmp := t.TempDir()
+
+	repoName := "testrepo"
+	err := git.EnsureRepo(tmp, repoName+".git")
+	assert.NoError(t, err)
+
+	repo, err := git.NewRepo(tmp, repoName)
+	assert.NoError(t, err)
+	assert.Equal(t, repoName, repo.Name())
+
+	repoName2 := "test-repo-with-hyphens"
+	err = git.EnsureRepo(tmp, repoName2+".git")
+	assert.NoError(t, err)
+
+	repo2, err := git.NewRepo(tmp, repoName2)
+	assert.NoError(t, err)
+	assert.Equal(t, repoName2, repo2.Name())
+}
+
+func TestHandlePushOptions(t *testing.T) {
+	tmp := t.TempDir()
+	err := git.EnsureRepo(tmp, "test.git")
+	assert.NoError(t, err)
+
+	repo, err := git.NewRepo(tmp, "test")
+	assert.NoError(t, err)
+
+	opts := []*packp.Option{
+		{Key: "description", Value: "New description"},
+	}
+	err = git.HandlePushOptions(repo, opts)
+	assert.NoError(t, err)
+	assert.Equal(t, "New description", repo.Meta.Description)
+
+	opts = []*packp.Option{
+		{Key: "private", Value: "false"},
+	}
+	err = git.HandlePushOptions(repo, opts)
+	assert.NoError(t, err)
+	assert.False(t, repo.Meta.Private)
+
+	repo.Meta.Private = true
+	opts = []*packp.Option{
+		{Key: "private", Value: "invalid"},
+	}
+	err = git.HandlePushOptions(repo, opts)
+	assert.NoError(t, err)
+	assert.True(t, repo.Meta.Private)
+
+	opts = []*packp.Option{
+		{Key: "tags", Value: "tag1,tag2"},
+	}
+	err = git.HandlePushOptions(repo, opts)
+	assert.NoError(t, err)
+
+	opts = []*packp.Option{
+		{Key: "description", Value: "Combined update"},
+		{Key: "private", Value: "true"},
+	}
+	err = git.HandlePushOptions(repo, opts)
+	assert.NoError(t, err)
+	assert.Equal(t, "Combined update", repo.Meta.Description)
+	assert.True(t, repo.Meta.Private)
+}
+
+func TestRepoPath(t *testing.T) {
+	tmp := t.TempDir()
+	err := git.EnsureRepo(tmp, "test.git")
+	assert.NoError(t, err)
+
+	repo, err := git.NewRepo(tmp, "test")
+	assert.NoError(t, err)
+
+	expected := filepath.Join(tmp, "test.git")
+	assert.Equal(t, expected, repo.Path())
+}
+
+func TestEnsureJSONFile(t *testing.T) {
+	tmp := t.TempDir()
+	err := git.EnsureRepo(tmp, "test.git")
+	assert.NoError(t, err)
+
+	repo, err := git.NewRepo(tmp, "test")
+	assert.NoError(t, err)
+
+	assert.True(t, repo.Meta.Private, "default repo should be private")
+	assert.Equal(t, "", repo.Meta.Description, "default description should be empty")
+	assert.Equal(t, 0, len(repo.Meta.Tags), "default tags should be empty")
+}
diff --git a/internal/git/repo.go b/internal/git/repo.go
index 1d19a43..2b9eff8 100644
--- a/internal/git/repo.go
+++ b/internal/git/repo.go
@@ -57,6 +57,9 @@ func NewRepo(dir, name string) (*Repo, error) {
 	if err := json.NewDecoder(fi).Decode(&r.Meta); err != nil {
 		return nil, err
 	}
+	if r.Meta.Tags == nil {
+		r.Meta.Tags = make(TagSet)
+	}
 
 	return r, nil
 }
diff --git a/internal/http/httperr/httperr_test.go b/internal/http/httperr/httperr_test.go
new file mode 100644
index 0000000..562e564
--- /dev/null
+++ b/internal/http/httperr/httperr_test.go
@@ -0,0 +1,122 @@
+package httperr_test
+
+import (
+	"errors"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"github.com/alecthomas/assert/v2"
+	"go.jolheiser.com/ugit/internal/http/httperr"
+)
+
+func successHandler(w http.ResponseWriter, r *http.Request) error {
+	w.WriteHeader(http.StatusOK)
+	return nil
+}
+
+func errorHandler(w http.ResponseWriter, r *http.Request) error {
+	return errors.New("test error")
+}
+
+func statusErrorHandler(status int) func(w http.ResponseWriter, r *http.Request) error {
+	return func(w http.ResponseWriter, r *http.Request) error {
+		return httperr.Status(errors.New("test error"), status)
+	}
+}
+
+func TestHandler_Success(t *testing.T) {
+	handler := httperr.Handler(successHandler)
+
+	req := httptest.NewRequest("GET", "/", nil)
+	recorder := httptest.NewRecorder()
+
+	handler.ServeHTTP(recorder, req)
+
+	assert.Equal(t, http.StatusOK, recorder.Code)
+}
+
+func TestHandler_Error(t *testing.T) {
+	handler := httperr.Handler(errorHandler)
+
+	req := httptest.NewRequest("GET", "/", nil)
+	recorder := httptest.NewRecorder()
+
+	handler.ServeHTTP(recorder, req)
+
+	assert.Equal(t, http.StatusInternalServerError, recorder.Code)
+}
+
+func TestHandler_StatusError(t *testing.T) {
+	testCases := []struct {
+		name           string
+		status         int
+		expectedStatus int
+	}{
+		{
+			name:           "not found",
+			status:         http.StatusNotFound,
+			expectedStatus: http.StatusNotFound,
+		},
+		{
+			name:           "bad request",
+			status:         http.StatusBadRequest,
+			expectedStatus: http.StatusBadRequest,
+		},
+		{
+			name:           "unauthorized",
+			status:         http.StatusUnauthorized,
+			expectedStatus: http.StatusUnauthorized,
+		},
+	}
+
+	for _, tc := range testCases {
+		t.Run(tc.name, func(t *testing.T) {
+			handler := httperr.Handler(statusErrorHandler(tc.status))
+
+			req := httptest.NewRequest("GET", "/", nil)
+			recorder := httptest.NewRecorder()
+
+			handler.ServeHTTP(recorder, req)
+
+			assert.Equal(t, tc.expectedStatus, recorder.Code)
+		})
+	}
+}
+
+type unwrapper interface {
+	Unwrap() error
+}
+
+func TestError(t *testing.T) {
+	originalErr := errors.New("original error")
+	httpErr := httperr.Error(originalErr)
+
+	assert.Equal(t, originalErr.Error(), httpErr.Error())
+
+	unwrapper, ok := any(httpErr).(unwrapper)
+	assert.True(t, ok)
+	assert.Equal(t, originalErr, unwrapper.Unwrap())
+}
+
+func TestStatus(t *testing.T) {
+	originalErr := errors.New("original error")
+	httpErr := httperr.Status(originalErr, http.StatusNotFound)
+
+	assert.Equal(t, originalErr.Error(), httpErr.Error())
+
+	unwrapper, ok := any(httpErr).(unwrapper)
+	assert.True(t, ok)
+	assert.Equal(t, originalErr, unwrapper.Unwrap())
+
+	handler := httperr.Handler(func(w http.ResponseWriter, r *http.Request) error {
+		return httpErr
+	})
+
+	req := httptest.NewRequest("GET", "/", nil)
+	recorder := httptest.NewRecorder()
+
+	handler.ServeHTTP(recorder, req)
+
+	assert.Equal(t, http.StatusNotFound, recorder.Code)
+}