example

tests/test_package.py

@@ -0,0 +1,45 @@
+"""Tests for flow.commands.package."""
+
+from types import SimpleNamespace
+
+from flow.commands import package
+
+
+def test_load_installed_returns_empty_on_malformed_json(tmp_path, monkeypatch):
+    state_file = tmp_path / "installed.json"
+    state_file.write_text("{broken", encoding="utf-8")
+    monkeypatch.setattr(package, "INSTALLED_STATE", state_file)
+
+    assert package._load_installed() == {}
+
+
+def test_load_installed_returns_empty_on_non_mapping_json(tmp_path, monkeypatch):
+    state_file = tmp_path / "installed.json"
+    state_file.write_text('["neovim"]', encoding="utf-8")
+    monkeypatch.setattr(package, "INSTALLED_STATE", state_file)
+
+    assert package._load_installed() == {}
+
+
+class _ConsoleCapture:
+    def __init__(self):
+        self.info_messages = []
+
+    def info(self, message):
+        self.info_messages.append(message)
+
+    def table(self, _headers, _rows):
+        raise AssertionError("table() should not be called when installed state is malformed")
+
+
+def test_run_list_handles_malformed_installed_state(tmp_path, monkeypatch):
+    state_file = tmp_path / "installed.json"
+    state_file.write_text("{oops", encoding="utf-8")
+    monkeypatch.setattr(package, "INSTALLED_STATE", state_file)
+    monkeypatch.setattr(package, "_get_definitions", lambda _ctx: {})
+
+    ctx = SimpleNamespace(console=_ConsoleCapture())
+
+    package.run_list(ctx, SimpleNamespace(all=False))
+
+    assert ctx.console.info_messages == ["No packages installed."]