MIL-008: Choose level

Review record RC-041 (Go, autonomous mode, not independent). Task: MIL-008#1 Task: MIL-008#2 Task: MIL-008#3 Task: MIL-008#4 Task: MIL-008#5 Task: MIL-008#6 Task: MIL-008#7 Task: MIL-008#8
2026-10-14 23:58:31 +08:00
parent ee9c531ea6
commit f45d6036e4
40 changed files with 1483 additions and 102 deletions
@@ -0,0 +1,209 @@
+"""End-to-end tests of the level screen and the flow to the first card.
+
+@file test_level_window.py
+@brief Builds the real level screen with Tk and checks it against the wireframe.
+"""
+
+import shutil
+import tkinter as tk
+from collections.abc import Iterator, Sequence
+from pathlib import Path
+
+import pytest
+
+from flash_card.constants import (
+    BACKGROUND_COLOR,
+    CARD_WIDTH,
+    DEFAULT_DATA_DIR,
+    FINISHED_MESSAGE,
+    LEVEL_BUTTON_COLOR,
+    LEVEL_BUTTON_FONT,
+    LEVEL_SCREEN_HEIGHT,
+    LEVEL_TITLE,
+    LEVEL_TITLE_FONT,
+    PROGRESS_FILE_NAME,
+    VOCABULARY_FILE_NAME,
+    WINDOW_PADDING,
+    WINDOW_TITLE,
+)
+from flash_card.domain.entities.card import Card
+from flash_card.domain.entities.deck import Deck
+from flash_card.domain.value_objects.level import Level
+from flash_card.infrastructure.persistence.csv_progress_repository import (
+    CsvProgressRepository,
+)
+from flash_card.infrastructure.persistence.csv_vocabulary_repository import (
+    CsvVocabularyRepository,
+)
+from flash_card.infrastructure.speech.null_speech import NullSpeech
+from flash_card.presentation import app
+from flash_card.presentation.features.flash_card.flash_card_view import FlashCardView
+from flash_card.presentation.features.level.level_view import LevelView
+from flash_card.presentation.features.level.level_view_model import LevelViewModel
+
+
+def _last(cards: Sequence[Card]) -> Card:
+    return cards[-1]
+
+
+def _label(button: tk.Button) -> str:
+    return str(button.cget("text"))
+
+
+def _word(view: FlashCardView) -> str:
+    return str(view.canvas.itemcget(view.word_text_id, "text"))
+
+
+def _clear(root: tk.Tk, view: object) -> None:
+    """Destroy the widgets of whichever screen is shown, and pending timers."""
+    if isinstance(view, FlashCardView):
+        if view.flip_timer is not None:
+            root.after_cancel(view.flip_timer)
+            view.flip_timer = None
+        for widget in (view.canvas, view.wrong_button, view.right_button):
+            widget.destroy()
+    elif isinstance(view, LevelView):
+        view.destroy()
+
+
+@pytest.fixture
+def data_dir(tmp_path: Path) -> Path:
+    shutil.copy(DEFAULT_DATA_DIR / VOCABULARY_FILE_NAME, tmp_path)
+    return tmp_path
+
+
+@pytest.fixture
+def application(tk_root: tk.Tk, data_dir: Path) -> Iterator[app.Application]:
+    instance = app.Application(
+        tk_root,
+        CsvVocabularyRepository(data_dir / VOCABULARY_FILE_NAME),
+        CsvProgressRepository(data_dir / PROGRESS_FILE_NAME),
+        NullSpeech(),
+        _last,
+    )
+    yield instance
+    _clear(tk_root, instance.view)
+
+
+@pytest.fixture
+def level_view(tk_root: tk.Tk) -> Iterator[LevelView]:
+    chosen: list[Level] = []
+    view = LevelView(tk_root, LevelViewModel(), chosen.append)
+    tk_root.update_idletasks()
+    yield view
+    view.destroy()
+
+
+def test_level_screen_shows_title_with_font_on_window_background(
+    level_view: LevelView,
+) -> None:
+    label = level_view.title_label
+    assert label.cget("text") == LEVEL_TITLE == "Choose your level"
+    assert label.cget("bg") == BACKGROUND_COLOR
+    family, size, style = LEVEL_TITLE_FONT
+    assert str(label.cget("font")).split() == [family, str(size), style]
+    assert level_view.frame.cget("bg") == BACKGROUND_COLOR
+
+
+def test_level_screen_frame_has_the_card_window_size(level_view: LevelView) -> None:
+    assert level_view.frame.winfo_width() == CARD_WIDTH
+    assert level_view.frame.winfo_height() == LEVEL_SCREEN_HEIGHT
+
+
+def test_level_screen_shows_three_buttons_in_order(level_view: LevelView) -> None:
+    labels = [_label(button) for button in level_view.buttons]
+    assert labels == ["100 words", "1000 words", "All words"]
+    rows = [int(button.grid_info()["row"]) for button in level_view.buttons]
+    assert rows == [1, 2, 3]
+
+
+def test_level_buttons_have_equal_width_font_and_colour(
+    level_view: LevelView,
+) -> None:
+    widths = {int(str(button.cget("width"))) for button in level_view.buttons}
+    assert len(widths) == 1
+    family, size, style = LEVEL_BUTTON_FONT
+    for button in level_view.buttons:
+        assert str(button.cget("font")).split() == [family, str(size), style]
+        assert button.cget("bg") == LEVEL_BUTTON_COLOR
+    assert len({button.winfo_reqwidth() for button in level_view.buttons}) == 1
+
+
+def test_clicking_a_button_forwards_its_level(tk_root: tk.Tk) -> None:
+    chosen: list[Level] = []
+    view = LevelView(tk_root, LevelViewModel(), chosen.append)
+    for button in view.buttons:
+        button.invoke()
+    view.destroy()
+    assert chosen == [Level(100), Level(1000), Level(None)]
+
+
+def test_destroy_removes_the_level_frame(tk_root: tk.Tk) -> None:
+    view = LevelView(tk_root, LevelViewModel(), lambda level: None)
+    view.destroy()
+    assert not view.frame.winfo_exists()
+
+
+def test_clicking_100_words_replaces_screen_with_first_card_of_first_hundred(
+    tk_root: tk.Tk, application: app.Application, data_dir: Path
+) -> None:
+    first_hundred = (
+        CsvVocabularyRepository(data_dir / VOCABULARY_FILE_NAME).load().cards[:100]
+    )
+    application.show_level_screen()
+    level_view = application.view
+    assert isinstance(level_view, LevelView)
+
+    level_view.buttons[0].invoke()
+
+    card_view = application.view
+    assert isinstance(card_view, FlashCardView)
+    assert not level_view.frame.winfo_exists()
+    assert _word(card_view) == first_hundred[-1].front
+    assert tk_root.title() == WINDOW_TITLE
+    assert int(str(tk_root.cget("padx"))) == WINDOW_PADDING
+
+
+def test_level_whose_words_are_all_known_shows_the_finished_message(
+    application: app.Application, data_dir: Path
+) -> None:
+    cards = CsvVocabularyRepository(data_dir / VOCABULARY_FILE_NAME).load().cards
+    pair = CsvVocabularyRepository(data_dir / VOCABULARY_FILE_NAME).load().language_pair
+    CsvProgressRepository(data_dir / PROGRESS_FILE_NAME).save(Deck(pair, cards[100:]))
+    application.show_level_screen()
+    level_view = application.view
+    assert isinstance(level_view, LevelView)
+
+    level_view.buttons[0].invoke()
+
+    card_view = application.view
+    assert isinstance(card_view, FlashCardView)
+    assert _word(card_view) == FINISHED_MESSAGE
+
+
+def test_create_application_with_level_skips_the_level_screen(
+    tk_root: tk.Tk, data_dir: Path, monkeypatch: pytest.MonkeyPatch
+) -> None:
+    monkeypatch.setattr(tk, "Tk", lambda: tk_root)
+
+    application = app.create_application(data_dir, False, Level(100))
+
+    try:
+        assert isinstance(application.view, FlashCardView)
+        assert not [c for c in tk_root.winfo_children() if isinstance(c, tk.Frame)]
+    finally:
+        _clear(tk_root, application.view)
+
+
+def test_create_application_without_level_shows_the_level_screen(
+    tk_root: tk.Tk, data_dir: Path, monkeypatch: pytest.MonkeyPatch
+) -> None:
+    monkeypatch.setattr(tk, "Tk", lambda: tk_root)
+
+    application = app.create_application(data_dir, False)
+
+    try:
+        assert isinstance(application.view, LevelView)
+        assert application.root is tk_root
+    finally:
+        _clear(tk_root, application.view)