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import pytest
from rich.text import Text
from tests.utilities.render import render
from textual.renderables.text_opacity import TextOpacity
STOP = "\x1b[0m"
@pytest.fixture
def text():
return Text("Hello, world!", style="#ff0000 on #00ff00", end="")
def test_simple_text_opacity(text):
blended_red_on_green = "\x1b[38;2;127;127;0;48;2;0;255;0m"
assert render(TextOpacity(text, opacity=0.5)) == (
f"{blended_red_on_green}Hello, world!{STOP}"
)
def test_value_zero_doesnt_render_the_text(text):
assert render(TextOpacity(text, opacity=0)) == (
f"\x1b[48;2;0;255;0m {STOP}"
)
def test_text_opacity_value_of_one_noop(text):
assert render(TextOpacity(text, opacity=1)) == render(text)
def test_text_opacity_no_style_noop():
text_no_style = Text("Hello, world!", end="")
assert render(TextOpacity(text_no_style, opacity=0.2)) == render(text_no_style)
def test_text_opacity_only_fg_noop():
text_only_fg = Text("Hello, world!", style="#ff0000", end="")
assert render(TextOpacity(text_only_fg, opacity=0.5)) == render(text_only_fg)
def test_text_opacity_only_bg_noop():
text_only_bg = Text("Hello, world!", style="on #ff0000", end="")
assert render(TextOpacity(text_only_bg, opacity=0.5)) == render(text_only_bg)
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