Claudio Ortolina
6a3e9695db
Add a headless smoke-test harness for the Presto microPython app using pimoroni-emulator mock modules. A PRESTO_TEST_MODE=1 guard prevents main() from running at import time so draw functions can be called directly from tests. - presto/main.py: wrap main() with PRESTO_TEST_MODE guard - presto/tests/: conftest with emulator fixtures, 7 smoke tests - presto/mise.toml: add [tasks.test] - presto/README.md, presto/AGENTS.md: add Testing section - .gitignore: exclude test __pycache__, pytest_cache, fixture pngs
121 lines
4.1 KiB
Python
121 lines
4.1 KiB
Python
"""Smoke tests — verify every Presto screen renders without crashing.
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Each test:
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1. Creates an ``AppState`` (requires ``init_display`` fixture).
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2. Sets the appropriate view state fields.
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3. Calls the screen's draw function.
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4. Asserts no exception occurred.
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5. Saves a screenshot to ``presto/tests/fixtures/`` for manual inspection.
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No network calls are made — ``fetch_thumbnail`` is monkey-patched to raise,
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and mock records have ``_thumb_failed=True`` / ``_thumb_data=None``.
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"""
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import pytest
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from tests.conftest import make_mock_record
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@pytest.mark.usefixtures("init_display")
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class TestSmokeScreens:
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"""Smoke tests for all 7 Presto screens."""
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# ------------------------------------------------------------------
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# Helpers
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# ------------------------------------------------------------------
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@staticmethod
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def _make_app(main_module):
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"""Create a fresh ``AppState``."""
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return main_module.AppState()
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@staticmethod
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def _screenshot(main_module, name):
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"""Save the current emulator framebuffer to fixtures/."""
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from emulator.testing import screenshot
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path = f"tests/fixtures/{name}.png"
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screenshot(path)
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# ------------------------------------------------------------------
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# Tests
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# ------------------------------------------------------------------
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def test_home_screen_renders(self, main_module):
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"""Home / splash screen."""
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app = self._make_app(main_module)
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main_module.draw_home_screen(app)
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self._screenshot(main_module, "home")
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def test_month_view_renders(self, main_module):
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"""Month calendar grid."""
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app = self._make_app(main_module)
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app.screen = main_module.STATE_MONTH
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app.view_year = 2026
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app.view_month = 5
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main_module.draw_month_view(app)
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self._screenshot(main_module, "month")
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def test_day_view_empty_renders(self, main_module):
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"""Day view with no records."""
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app = self._make_app(main_module)
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app.screen = main_module.STATE_DAY
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app.view_year = 2026
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app.view_month = 5
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app.day.selected_day = 15
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app.day.records = []
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app.day.error = False
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main_module.draw_day_view(app)
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self._screenshot(main_module, "day-empty")
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def test_day_view_error_renders(self, main_module):
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"""Day view with error state."""
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app = self._make_app(main_module)
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app.screen = main_module.STATE_DAY
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app.view_year = 2026
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app.view_month = 5
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app.day.selected_day = 15
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app.day.records = []
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app.day.error = True
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main_module.draw_day_view(app)
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self._screenshot(main_module, "day-error")
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def test_record_detail_renders(self, main_module):
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"""Record detail view."""
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app = self._make_app(main_module)
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app.screen = main_module.STATE_RECORD
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app.view_year = 2026
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app.view_month = 5
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app.day.selected_day = 15
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rec = make_mock_record(0)
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app.day.records = [rec]
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app.detail.selected_index = 0
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app.detail.source_screen = main_module.STATE_DAY
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main_module.draw_record_detail(app)
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self._screenshot(main_module, "record-detail")
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def test_search_input_renders(self, main_module):
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"""Search input screen with on-screen keyboard."""
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app = self._make_app(main_module)
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app.screen = main_module.STATE_SEARCH_INPUT
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main_module.draw_search_input(app)
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self._screenshot(main_module, "search-input")
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def test_search_results_renders(self, main_module):
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"""Search results list."""
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app = self._make_app(main_module)
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app.screen = main_module.STATE_SEARCH_RESULTS
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# Populate results with mock records
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recs = [make_mock_record(i) for i in range(3)]
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app.search.results = recs
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# Pre-compute content height (prepare_record_list won't trigger
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# network calls because _thumb_failed=True and _thumb_url="").
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app.search.content_height = main_module.prepare_record_list(app, recs)
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main_module.draw_search_results(app)
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self._screenshot(main_module, "search-results")
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