fancy theme

internal/todos/store_test.go

@@ -22,6 +22,31 @@ const fixture = `{
 Keep {braces} in the body.
 `
 
+func TestActualPiExtensionFixtureRoundTrip(t *testing.T) {
+	// Captured from a todo created by Pi's todo extension (not hand-written).
+	data, err := os.ReadFile("testdata/pi-created.md")
+	if err != nil {
+		t.Fatal(err)
+	}
+	parsed, err := Parse("1ddf1df4", data)
+	if err != nil || parsed.Title != "TodoApp compatibility probe" || parsed.Status != "open" || len(parsed.Tags) != 2 || parsed.Body != "# Compatibility\n\nCreated by the Pi todo extension for TodoApp tests.\n" {
+		t.Fatalf("could not read Pi fixture: %+v, %v", parsed, err)
+	}
+	dir := t.TempDir()
+	path := filepath.Join(dir, parsed.ID+".md")
+	if err := os.WriteFile(path, data, 0600); err != nil {
+		t.Fatal(err)
+	}
+	parsed.Title = "Edited in TodoApp"
+	if err := Update(dir, parsed); err != nil {
+		t.Fatal(err)
+	}
+	updated, err := Read(dir, parsed.ID)
+	if err != nil || updated.Title != "Edited in TodoApp" || updated.CreatedAt != parsed.CreatedAt || updated.Body != parsed.Body {
+		t.Fatalf("Pi fixture round-trip failed: %+v, %v", updated, err)
+	}
+}
+
 func TestParseAndSerializePiFixture(t *testing.T) {
 	todo, err := Parse("deadbeef", []byte(fixture))
 	if err != nil {

internal/todos/testdata/pi-created.md

@@ -0,0 +1,14 @@
+{
+  "id": "1ddf1df4",
+  "title": "TodoApp compatibility probe",
+  "tags": [
+    "compat",
+    "pi"
+  ],
+  "status": "open",
+  "created_at": "2026-11-04T15:58:40.258Z"
+}
+
+# Compatibility
+
+Created by the Pi todo extension for TodoApp tests.