rich/tests/test_align.py

import io

import pytest

from rich.console import Console
from rich.align import Align
from rich.measure import Measurement


def test_bad_align_legal():

    # Legal
    Align("foo", "left")
    Align("foo", "center")
    Align("foo", "right")

    # illegal
    with pytest.raises(ValueError):
        Align("foo", None)
    with pytest.raises(ValueError):
        Align("foo", "middle")
    with pytest.raises(ValueError):
        Align("foo", "")
    with pytest.raises(ValueError):
        Align("foo", "LEFT")


def test_align_left():
    console = Console(file=io.StringIO(), width=10)
    console.print(Align("foo", "left"))
    assert console.file.getvalue() == "foo       \n"


def test_align_center():
    console = Console(file=io.StringIO(), width=10)
    console.print(Align("foo", "center"))
    assert console.file.getvalue() == "   foo    \n"


def test_align_right():
    console = Console(file=io.StringIO(), width=10)
    console.print(Align("foo", "right"))
    assert console.file.getvalue() == "       foo\n"


def test_align_fit():
    console = Console(file=io.StringIO(), width=10)
    console.print(Align("foobarbaze", "center"))
    assert console.file.getvalue() == "foobarbaze\n"


def test_align_right_style():
    console = Console(
        file=io.StringIO(), width=10, color_system="truecolor", force_terminal=True
    )
    console.print(Align("foo", "right", style="on blue"))
    assert console.file.getvalue() == "\x1b[44m       \x1b[0m\x1b[44mfoo\x1b[0m\n"


def test_measure():
    console = Console(file=io.StringIO(), width=20)
    _min, _max = Measurement.get(console, Align("foo bar", "left"), 20)
    assert _min == 3
    assert _max == 7


def test_shortcuts():
    assert Align.left("foo").align == "left"
    assert Align.left("foo").renderable == "foo"
    assert Align.right("foo").align == "right"
    assert Align.right("foo").renderable == "foo"
    assert Align.center("foo").align == "center"
    assert Align.center("foo").renderable == "foo"