tests/test_constrain.py


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from rich.console import Console
from rich.constrain import Constrain
from rich.text import Text


def test_width_of_none():
    console = Console()
    constrain = Constrain(Text("foo"), width=None)
    min_width, max_width = constrain.__rich_measure__(console, 80)
    assert min_width == 3
    assert max_width == 3