1 files changed, 38 insertions, 0 deletions
diff --git a/internal/app/app_test.go b/internal/app/app_test.go
new file mode 100644
index 0000000..ec96dbd
--- /dev/null
+++ b/internal/app/app_test.go
@@ -0,0 +1,38 @@
+package app
+
+import (
+	"errors"
+	"testing"
+
+	tea "github.com/charmbracelet/bubbletea"
+)
+
+type stubProgram struct {
+	err error
+}
+
+func (s stubProgram) Run() (tea.Model, error) {
+	return nil, s.err
+}
+
+func TestRunInvokesProgram(t *testing.T) {
+	t.Helper()
+	original := programFactory
+	defer func() { programFactory = original }()
+	programFactory = func(tea.Model) teaProgram { return stubProgram{} }
+	if err := Run(Options{Root: t.TempDir()}); err != nil {
+		t.Fatalf("Run returned error: %v", err)
+	}
+}
+
+func TestRunPropagatesError(t *testing.T) {
+	t.Helper()
+	original := programFactory
+	defer func() { programFactory = original }()
+	errRun := errors.New("boom")
+	programFactory = func(tea.Model) teaProgram { return stubProgram{err: errRun} }
+	err := Run(Options{Root: t.TempDir()})
+	if !errors.Is(err, errRun) {
+		t.Fatalf("expected error propagation, got %v", err)
+	}
+}