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import pytest
from textual._text_area_theme import TextAreaTheme
from textual.app import App, ComposeResult
from textual.widgets import TextArea
from textual.widgets._text_area import ThemeDoesNotExist
class TextAreaApp(App[None]):
def compose(self) -> ComposeResult:
yield TextArea("print('hello')", language="python")
async def test_default_theme():
app = TextAreaApp()
async with app.run_test():
text_area = app.query_one(TextArea)
assert text_area.theme is "css"
async def test_setting_builtin_themes():
class MyTextAreaApp(App[None]):
def compose(self) -> ComposeResult:
yield TextArea("print('hello')", language="python", theme="vscode_dark")
app = MyTextAreaApp()
async with app.run_test():
text_area = app.query_one(TextArea)
assert text_area.theme == "vscode_dark"
text_area.theme = "monokai"
assert text_area.theme == "monokai"
async def test_setting_unknown_theme_raises_exception():
app = TextAreaApp()
async with app.run_test():
text_area = app.query_one(TextArea)
with pytest.raises(ThemeDoesNotExist):
text_area.theme = "this-theme-doesnt-exist"
async def test_registering_and_setting_theme():
app = TextAreaApp()
async with app.run_test():
text_area = app.query_one(TextArea)
text_area.register_theme(TextAreaTheme("my-theme"))
assert "my-theme" in text_area.available_themes
text_area.theme = "my-theme"
assert text_area.theme == "my-theme"
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