githubmirror/rich

tests/test_text.py
1 129 строк29 KB
Will McGugan
fix background style with soft wrap
23 янв 2026, 18:04
23 янв 2026, 18:0439ee57d
import re
from io import StringIO
from typing import List

import pytest

from rich.console import Console, Group
from rich.measure import Measurement
from rich.style import Style
from rich.text import Span, Text


def test_span():
    span = Span(1, 10, "foo")
    repr(span)
    assert bool(span)
    assert not Span(10, 10, "foo")


def test_span_split():
    assert Span(5, 10, "foo").split(2) == (Span(5, 10, "foo"), None)
    assert Span(5, 10, "foo").split(15) == (Span(5, 10, "foo"), None)
    assert Span(0, 10, "foo").split(5) == (Span(0, 5, "foo"), Span(5, 10, "foo"))


def test_span_move():
    assert Span(5, 10, "foo").move(2) == Span(7, 12, "foo")


def test_span_right_crop():
    assert Span(5, 10, "foo").right_crop(15) == Span(5, 10, "foo")
    assert Span(5, 10, "foo").right_crop(7) == Span(5, 7, "foo")


def test_len():
    assert len(Text("foo")) == 3


def test_cell_len():
    assert Text("foo").cell_len == 3
    assert Text("😀").cell_len == 2


def test_bool():
    assert Text("foo")
    assert not Text("")


def test_str():
    assert str(Text("foo")) == "foo"


def test_repr():
    assert isinstance(repr(Text("foo")), str)


def test_add():
    text = Text("foo") + Text("bar")
    assert str(text) == "foobar"
    assert Text("foo").__add__(1) == NotImplemented


def test_eq():
    assert Text("foo") == Text("foo")
    assert Text("foo") != Text("bar")
    assert Text("foo").__eq__(1) == NotImplemented


def test_contain():
    text = Text("foobar")
    assert "foo" in text
    assert "foo " not in text
    assert Text("bar") in text
    assert None not in text


def test_plain_property():
    text = Text("foo")
    text.append("bar")
    text.append("baz")
    assert text.plain == "foobarbaz"


def test_plain_property_setter():
    text = Text("foo")
    text.plain = "bar"
    assert str(text) == "bar"
    text = Text()
    text.append("Hello, World", "bold")
    text.plain = "Hello"
    assert str(text) == "Hello"
    assert text._spans == [Span(0, 5, "bold")]


def test_from_markup():
    text = Text.from_markup("Hello, [bold]World![/bold]")
    assert str(text) == "Hello, World!"
    assert text._spans == [Span(7, 13, "bold")]


def test_from_ansi():
    text = Text.from_ansi("Hello, \033[1mWorld!\033[0m")
    assert str(text) == "Hello, World!"
    assert text._spans == [Span(7, 13, Style(bold=True))]

    text = Text.from_ansi("Hello, \033[1m\nWorld!\033[0m")
    assert str(text) == "Hello, \nWorld!"
    assert text._spans == [Span(8, 14, Style(bold=True))]

    text = Text.from_ansi("\033[1mBOLD\033[m not bold")
    assert str(text) == "BOLD not bold"
    assert text._spans == [Span(0, 4, Style(bold=True))]

    text = Text.from_ansi("\033[1m\033[Kfoo barmbaz")
    assert str(text) == "foo barmbaz"
    assert text._spans == [Span(0, 11, Style(bold=True))]


def test_copy():
    text = Text()
    text.append("Hello", "bold")
    text.append(" ")
    text.append("World", "italic")
    test_copy = text.copy()
    assert text == test_copy
    assert text is not test_copy


def test_rstrip():
    text = Text("Hello, World!    ")
    text.rstrip()
    assert str(text) == "Hello, World!"


def test_rstrip_end():
    text = Text("Hello, World!    ")
    text.rstrip_end(14)
    assert str(text) == "Hello, World! "


def test_stylize():
    text = Text("Hello, World!")
    text.stylize("bold", 7, 11)
    assert text._spans == [Span(7, 11, "bold")]
    text.stylize("bold", 20, 25)
    assert text._spans == [Span(7, 11, "bold")]


def test_stylize_before():
    text = Text("Hello, World!")
    text.stylize("bold", 0, 5)
    text.stylize_before("italic", 2, 7)
    assert text._spans == [Span(2, 7, "italic"), Span(0, 5, "bold")]


def test_stylize_negative_index():
    text = Text("Hello, World!")
    text.stylize("bold", -6, -1)
    assert text._spans == [Span(7, 12, "bold")]


def test_highlight_regex():
    # As a string
    text = Text("peek-a-boo")

    count = text.highlight_regex(r"NEVER_MATCH", "red")
    assert count == 0
    assert len(text._spans) == 0

    # text: peek-a-boo
    # indx: 0123456789
    count = text.highlight_regex(r"[a|e|o]+", "red")
    assert count == 3
    assert sorted(text._spans) == [
        Span(1, 3, "red"),
        Span(5, 6, "red"),
        Span(8, 10, "red"),
    ]

    text = Text("Ada Lovelace, Alan Turing")

    count = text.highlight_regex(
        r"(?P<yellow>[A-Za-z]+)[ ]+(?P<red>[A-Za-z]+)(?P<NEVER_MATCH>NEVER_MATCH)*"
    )

    # The number of matched name should be 2
    assert count == 2
    assert sorted(text._spans) == [
        Span(0, 3, "yellow"),  # Ada
        Span(4, 12, "red"),  # Lovelace
        Span(14, 18, "yellow"),  # Alan
        Span(19, 25, "red"),  # Turing
    ]

    # As a regular expression object
    text = Text("peek-a-boo")

    count = text.highlight_regex(re.compile(r"NEVER_MATCH"), "red")
    assert count == 0
    assert len(text._spans) == 0

    # text: peek-a-boo
    # indx: 0123456789
    count = text.highlight_regex(re.compile(r"[a|e|o]+"), "red")
    assert count == 3
    assert sorted(text._spans) == [
        Span(1, 3, "red"),
        Span(5, 6, "red"),
        Span(8, 10, "red"),
    ]

    text = Text("Ada Lovelace, Alan Turing")

    count = text.highlight_regex(
        re.compile(
            r"(?P<yellow>[A-Za-z]+)[ ]+(?P<red>[A-Za-z]+)(?P<NEVER_MATCH>NEVER_MATCH)*"
        )
    )

    # The number of matched name should be 2
    assert count == 2
    assert sorted(text._spans) == [
        Span(0, 3, "yellow"),  # Ada
        Span(4, 12, "red"),  # Lovelace
        Span(14, 18, "yellow"),  # Alan
        Span(19, 25, "red"),  # Turing
    ]


def test_highlight_regex_callable():
    text = Text("Vulnerability CVE-2018-6543 detected")
    re_cve = r"CVE-\d{4}-\d+"
    compiled_re_cve = re.compile(r"CVE-\d{4}-\d+")

    def get_style(text: str) -> Style:
        return Style.parse(
            f"bold yellow link https://cve.mitre.org/cgi-bin/cvekey.cgi?keyword={text}"
        )

    # string
    count = text.highlight_regex(re_cve, get_style)
    assert count == 1
    assert len(text._spans) == 1
    assert text._spans[0].start == 14
    assert text._spans[0].end == 27
    assert (
        text._spans[0].style.link
        == "https://cve.mitre.org/cgi-bin/cvekey.cgi?keyword=CVE-2018-6543"
    )

    # Clear the tracked _spans for the regular expression object's use
    text._spans.clear()

    # regular expression object
    count = text.highlight_regex(compiled_re_cve, get_style)
    assert count == 1
    assert len(text._spans) == 1
    assert text._spans[0].start == 14
    assert text._spans[0].end == 27
    assert (
        text._spans[0].style.link
        == "https://cve.mitre.org/cgi-bin/cvekey.cgi?keyword=CVE-2018-6543"
    )


def test_highlight_words():
    text = Text("Do NOT! touch anything!")
    words = ["NOT", "!"]
    count = text.highlight_words(words, "red")
    assert count == 3
    assert sorted(text._spans) == [
        Span(3, 6, "red"),  # NOT
        Span(6, 7, "red"),  # !
        Span(22, 23, "red"),  # !
    ]

    # regex escape test
    text = Text("[o|u]aeiou")
    words = ["[a|e|i]", "[o|u]"]
    count = text.highlight_words(words, "red")
    assert count == 1
    assert text._spans == [Span(0, 5, "red")]

    # case sensitive
    text = Text("AB Ab aB ab")
    words = ["AB"]

    count = text.highlight_words(words, "red")
    assert count == 1
    assert text._spans == [Span(0, 2, "red")]

    text = Text("AB Ab aB ab")
    count = text.highlight_words(words, "red", case_sensitive=False)
    assert count == 4


def test_set_length():
    text = Text("Hello")
    text.set_length(5)
    assert text == Text("Hello")

    text = Text("Hello")
    text.set_length(10)
    assert text == Text("Hello     ")

    text = Text("Hello World")
    text.stylize("bold", 0, 5)
    text.stylize("italic", 7, 9)

    text.set_length(3)
    expected = Text()
    expected.append("Hel", "bold")
    assert text == expected


def test_console_width():
    console = Console()
    text = Text("Hello World!\nfoobarbaz")
    assert text.__rich_measure__(console, 80) == Measurement(9, 12)
    assert Text(" " * 4).__rich_measure__(console, 80) == Measurement(4, 4)
    assert Text(" \n  \n   ").__rich_measure__(console, 80) == Measurement(3, 3)


def test_join():
    text = Text("bar").join([Text("foo", "red"), Text("baz", "blue")])
    assert str(text) == "foobarbaz"
    assert text._spans == [Span(0, 3, "red"), Span(6, 9, "blue")]


def test_trim_spans():
    text = Text("Hello")
    text._spans[:] = [Span(0, 3, "red"), Span(3, 6, "green"), Span(6, 9, "blue")]
    text._trim_spans()
    assert text._spans == [Span(0, 3, "red"), Span(3, 5, "green")]


def test_pad_left():
    text = Text("foo")
    text.pad_left(3, "X")
    assert str(text) == "XXXfoo"


def test_pad_right():
    text = Text("foo")
    text.pad_right(3, "X")
    assert str(text) == "fooXXX"


def test_append():
    text = Text("foo")
    text.append("bar")
    assert str(text) == "foobar"
    text.append(Text("baz", "bold"))
    assert str(text) == "foobarbaz"
    assert text._spans == [Span(6, 9, "bold")]

    with pytest.raises(ValueError):
        text.append(Text("foo"), "bar")

    with pytest.raises(TypeError):
        text.append(1)


def test_append_text():
    text = Text("foo")
    text.append_text(Text("bar", style="bold"))
    assert str(text) == "foobar"
    assert text._spans == [Span(3, 6, "bold")]


def test_end():
    console = Console(width=20, file=StringIO())
    text = Group(Text.from_markup("foo", end=" "), Text.from_markup("bar"))
    console.print(text)
    assert console.file.getvalue() == "foo bar\n"


def test_split():
    text = Text()
    text.append("foo", "red")
    text.append("\n")
    text.append("bar", "green")
    text.append("\n")

    line1 = Text()
    line1.append("foo", "red")
    line2 = Text()
    line2.append("bar", "green")
    split = text.split("\n")
    assert len(split) == 2
    assert split[0] == line1
    assert split[1] == line2

    assert list(Text("foo").split("\n")) == [Text("foo")]


def test_split_spans():
    text = Text.from_markup("[red]Hello\n[b]World")
    lines = text.split("\n")
    assert lines[0].plain == "Hello"
    assert lines[1].plain == "World"
    assert lines[0].spans == [Span(0, 5, "red")]
    assert lines[1].spans == [Span(0, 5, "red"), Span(0, 5, "bold")]


def test_divide():
    lines = Text("foo").divide([])
    assert len(lines) == 1
    assert lines[0] == Text("foo")

    text = Text()
    text.append("foo", "bold")
    lines = text.divide([1, 2])
    assert len(lines) == 3
    assert str(lines[0]) == "f"
    assert str(lines[1]) == "o"
    assert str(lines[2]) == "o"
    assert lines[0]._spans == [Span(0, 1, "bold")]
    assert lines[1]._spans == [Span(0, 1, "bold")]
    assert lines[2]._spans == [Span(0, 1, "bold")]

    text = Text()
    text.append("foo", "red")
    text.append("bar", "green")
    text.append("baz", "blue")
    lines = text.divide([8])
    assert len(lines) == 2
    assert str(lines[0]) == "foobarba"
    assert str(lines[1]) == "z"
    assert lines[0]._spans == [
        Span(0, 3, "red"),
        Span(3, 6, "green"),
        Span(6, 8, "blue"),
    ]
    assert lines[1]._spans == [Span(0, 1, "blue")]

    lines = text.divide([1])
    assert len(lines) == 2
    assert str(lines[0]) == "f"
    assert str(lines[1]) == "oobarbaz"
    assert lines[0]._spans == [Span(0, 1, "red")]
    assert lines[1]._spans == [
        Span(0, 2, "red"),
        Span(2, 5, "green"),
        Span(5, 8, "blue"),
    ]


def test_right_crop():
    text = Text()
    text.append("foobar", "red")
    text.right_crop(3)
    assert str(text) == "foo"
    assert text._spans == [Span(0, 3, "red")]


def test_wrap_3():
    text = Text("foo bar baz")
    lines = text.wrap(Console(), 3)
    print(repr(lines))
    assert len(lines) == 3
    assert lines[0] == Text("foo")
    assert lines[1] == Text("bar")
    assert lines[2] == Text("baz")


def test_wrap_4():
    text = Text("foo bar baz", justify="left")
    lines = text.wrap(Console(), 4)
    assert len(lines) == 3
    assert lines[0] == Text("foo ")
    assert lines[1] == Text("bar ")
    assert lines[2] == Text("baz ")


def test_wrap_wrapped_word_length_greater_than_available_width():
    text = Text("1234 12345678")
    lines = text.wrap(Console(), 7)
    assert lines._lines == [
        Text("1234 "),
        Text("1234567"),
        Text("8"),
    ]


def test_wrap_cjk():
    text = Text("わさび")
    lines = text.wrap(Console(), 4)
    assert lines._lines == [
        Text("わさ"),
        Text("び"),
    ]


def test_wrap_cjk_width_mid_character():
    text = Text("わさび")
    lines = text.wrap(Console(), 3)
    assert lines._lines == [
        Text("わ"),
        Text("さ"),
        Text("び"),
    ]


def test_wrap_cjk_mixed():
    """Regression test covering https://github.com/Textualize/rich/issues/3176 and
    https://github.com/Textualize/textual/issues/3567 - double width characters could
    result in text going missing when wrapping."""
    text = Text("123ありがとうございました")
    console = Console(width=20)  # let's ensure the width passed to wrap() wins.

    wrapped_lines = text.wrap(console, width=8)
    with console.capture() as capture:
        console.print(wrapped_lines)

    assert capture.get() == "123あり\nがとうご\nざいまし\nた\n"


def test_wrap_long():
    text = Text("abracadabra", justify="left")
    lines = text.wrap(Console(), 4)
    assert len(lines) == 3
    assert lines[0] == Text("abra")
    assert lines[1] == Text("cada")
    assert lines[2] == Text("bra ")


def test_wrap_long_multi_codepoint():
    female_mechanic = "👩\u200d🔧"
    text = Text(female_mechanic * 5, justify="left")
    lines = text.wrap(Console(), 4)
    assert len(lines) == 3
    assert lines[0] == Text(female_mechanic * 2)
    assert lines[1] == Text(female_mechanic * 2)
    assert lines[2] == Text(female_mechanic + "  ")


def test_wrap_overflow():
    text = Text("Some more words")
    lines = text.wrap(Console(), 4, overflow="ellipsis")
    assert (len(lines)) == 3
    assert lines[0] == Text("Some")
    assert lines[1] == Text("more")
    assert lines[2] == Text("wor…")


def test_wrap_overflow_long():
    text = Text("bigword" * 10)
    lines = text.wrap(Console(), 4, overflow="ellipsis")
    assert len(lines) == 1
    assert lines[0] == Text("big…")


def test_wrap_long_words():
    text = Text("XX 12345678912")
    lines = text.wrap(Console(), 4)

    assert lines._lines == [
        Text("XX "),
        Text("1234"),
        Text("5678"),
        Text("912"),
    ]


def test_wrap_long_words_2():
    # https://github.com/Textualize/rich/issues/2273
    text = Text("Hello, World...123")
    lines = text.wrap(Console(), 10)
    assert lines._lines == [
        Text("Hello, "),
        Text("World...12"),
        Text("3"),
    ]


def test_wrap_long_words_followed_by_other_words():
    """After folding a word across multiple lines, we should continue from
    the next word immediately after the folded word (don't take a newline
    following completion of the folded word)."""
    text = Text("123 12345678 123 123")
    lines = text.wrap(Console(), 6)
    assert lines._lines == [
        Text("123 "),
        Text("123456"),
        Text("78 123"),
        Text("123"),
    ]


def test_wrap_long_word_preceeded_by_word_of_full_line_length():
    """The width of the first word is the same as the available width.
    Ensures that folding works correctly when there's no space available
    on the current line."""
    text = Text("123456 12345678 123 123")
    lines = text.wrap(Console(), 6)
    assert lines._lines == [
        Text("123456"),
        Text("123456"),
        Text("78 123"),
        Text("123"),
    ]


def test_wrap_multiple_consecutive_spaces():
    """Adding multiple consecutive spaces at the end of a line does not impact
    the location at which a break will be added during the process of wrapping."""
    text = Text("123456    12345678 123 123")
    lines = text.wrap(Console(), 6)
    assert lines._lines == [
        Text("123456"),
        Text("123456"),
        Text("78 123"),
        Text("123"),
    ]


def test_wrap_multi_codepoint():
    """Test wrapping of multi-codepoint characters."""
    female_mechanic = "👩\u200d🔧"
    text = Text(female_mechanic * 6 + " " + female_mechanic * 4)
    lines = text.wrap(Console(), 12)
    print(repr(lines))
    assert lines._lines == [
        Text(female_mechanic * 6),
        Text(female_mechanic * 4),
    ]


def test_wrap_long_words_justify_left():
    text = Text("X 123456789", justify="left")
    lines = text.wrap(Console(), 4)

    assert len(lines) == 4
    assert lines[0] == Text("X   ")
    assert lines[1] == Text("1234")
    assert lines[2] == Text("5678")
    assert lines[3] == Text("9   ")


def test_wrap_leading_and_trailing_whitespace():
    text = Text("   123  456 789   ")
    lines = text.wrap(Console(), 4)
    assert lines._lines == [
        Text("   1"),
        Text("23  "),
        Text("456 "),
        Text("789 "),
    ]


def test_no_wrap_no_crop():
    text = Text("Hello World!" * 3)

    console = Console(width=20, file=StringIO())
    console.print(text, no_wrap=True)
    console.print(text, no_wrap=True, crop=False, overflow="ignore")

    print(repr(console.file.getvalue()))
    assert (
        console.file.getvalue()
        == "Hello World!Hello Wo\nHello World!Hello World!Hello World!\n"
    )


def test_fit():
    text = Text("Hello\nWorld")
    lines = text.fit(3)
    assert str(lines[0]) == "Hel"
    assert str(lines[1]) == "Wor"


def test_wrap_tabs():
    text = Text("foo\tbar", justify="left")
    lines = text.wrap(Console(), 4)
    assert len(lines) == 2
    assert str(lines[0]) == "foo "
    assert str(lines[1]) == "bar "


def test_render():
    console = Console(width=15, record=True)
    text = Text.from_markup(
        "[u][b]Where[/b] there is a [i]Will[/i], there is a Way.[/u]"
    )
    console.print(text)
    output = console.export_text(styles=True)
    expected = "\x1b[1;4mWhere\x1b[0m\x1b[4m there is \x1b[0m\n\x1b[4ma \x1b[0m\x1b[3;4mWill\x1b[0m\x1b[4m, there \x1b[0m\n\x1b[4mis a Way.\x1b[0m\n"
    assert output == expected


def test_render_simple():
    console = Console(width=80)
    console.begin_capture()
    console.print(Text("foo"))
    result = console.end_capture()
    assert result == "foo\n"


@pytest.mark.parametrize(
    "print_text,result",
    [
        (("."), ".\n"),
        ((".", "."), ". .\n"),
        (("Hello", "World", "!"), "Hello World !\n"),
    ],
)
def test_print(print_text, result):
    console = Console(record=True)
    console.print(*print_text)
    assert console.export_text(styles=False) == result


@pytest.mark.parametrize(
    "print_text,result",
    [
        (("."), ".X"),
        ((".", "."), "..X"),
        (("Hello", "World", "!"), "HelloWorld!X"),
    ],
)
def test_print_sep_end(print_text, result):
    console = Console(record=True, file=StringIO())
    console.print(*print_text, sep="", end="X")
    assert console.file.getvalue() == result


def test_tabs_to_spaces():
    text = Text("\tHello\tWorld", tab_size=8)
    text.expand_tabs()
    assert text.plain == "        Hello   World"

    text = Text("\tHello\tWorld", tab_size=4)
    text.expand_tabs()
    assert text.plain == "    Hello   World"

    text = Text(".\t..\t...\t....\t", tab_size=4)
    text.expand_tabs()
    assert text.plain == ".   ..  ... ....    "

    text = Text("No Tabs")
    text.expand_tabs()
    assert text.plain == "No Tabs"

    text = Text("No Tabs", style="bold")
    text.expand_tabs()
    assert text.plain == "No Tabs"
    assert text.style == "bold"


@pytest.mark.parametrize(
    "markup,tab_size,expected_text,expected_spans",
    [
        ("", 4, "", []),
        ("\t", 4, "    ", []),
        ("\tbar", 4, "    bar", []),
        ("foo\tbar", 4, "foo bar", []),
        ("foo\nbar\nbaz", 4, "foo\nbar\nbaz", []),
        (
            "[bold]foo\tbar",
            4,
            "foo bar",
            [
                Span(0, 4, "bold"),
                Span(4, 7, "bold"),
            ],
        ),
        (
            "[bold]\tbar",
            4,
            "    bar",
            [
                Span(0, 4, "bold"),
                Span(4, 7, "bold"),
            ],
        ),
        (
            "\t[bold]bar",
            4,
            "    bar",
            [
                Span(4, 7, "bold"),
            ],
        ),
        (
            "[red]foo\tbar\n[green]egg\tbaz",
            8,
            "foo     bar\negg     baz",
            [
                Span(0, 8, "red"),
                Span(8, 12, "red"),
                Span(12, 20, "red"),
                Span(12, 20, "green"),
                Span(20, 23, "red"),
                Span(20, 23, "green"),
            ],
        ),
        (
            "[bold]X\tY",
            8,
            "X       Y",
            [
                Span(0, 8, "bold"),
                Span(8, 9, "bold"),
            ],
        ),
        (
            "[bold]💩\t💩",
            8,
            "💩      💩",
            [
                Span(0, 7, "bold"),
                Span(7, 8, "bold"),
            ],
        ),
        (
            "[bold]💩💩💩💩\t💩",
            8,
            "💩💩💩💩        💩",
            [
                Span(0, 12, "bold"),
                Span(12, 13, "bold"),
            ],
        ),
    ],
)
def test_tabs_to_spaces_spans(
    markup: str, tab_size: int, expected_text: str, expected_spans: List[Span]
):
    """Test spans are correct after expand_tabs"""
    text = Text.from_markup(markup)
    text.expand_tabs(tab_size)
    print(text._spans)
    assert text.plain == expected_text
    assert text._spans == expected_spans


def test_markup_switch():
    """Test markup can be disabled."""
    console = Console(file=StringIO(), markup=False)
    console.print("[bold]foo[/bold]")
    assert console.file.getvalue() == "[bold]foo[/bold]\n"


def test_emoji():
    """Test printing emoji codes."""
    console = Console(file=StringIO())
    console.print(":+1:")
    assert console.file.getvalue() == "👍\n"


def test_emoji_switch():
    """Test emoji can be disabled."""
    console = Console(file=StringIO(), emoji=False)
    console.print(":+1:")
    assert console.file.getvalue() == ":+1:\n"


def test_assemble():
    text = Text.assemble("foo", ("bar", "bold"))
    assert str(text) == "foobar"
    assert text._spans == [Span(3, 6, "bold")]


def test_assemble_meta():
    text = Text.assemble("foo", ("bar", "bold"), meta={"foo": "bar"})
    assert str(text) == "foobar"

    spans = text._spans
    expected = [Span(3, 6, "bold"), Span(0, 6, Style(meta={"foo": "bar"}))]

    assert spans == expected

    console = Console()
    assert text.get_style_at_offset(console, 0).meta == {"foo": "bar"}


def test_styled():
    text = Text.styled("foo", "bold red")
    assert text.style == ""
    assert str(text) == "foo"
    assert text._spans == [Span(0, 3, "bold red")]


def test_strip_control_codes():
    text = Text("foo\rbar")
    assert str(text) == "foobar"
    text.append("\x08")
    assert str(text) == "foobar"


def test_get_style_at_offset():
    console = Console()
    text = Text.from_markup("Hello [b]World[/b]")
    assert text.get_style_at_offset(console, 0) == Style()
    assert text.get_style_at_offset(console, 6) == Style(bold=True)


@pytest.mark.parametrize(
    "input, count, expected",
    [
        ("Hello", 10, "Hello"),
        ("Hello", 5, "Hello"),
        ("Hello", 4, "Hel…"),
        ("Hello", 3, "He…"),
        ("Hello", 2, "H…"),
        ("Hello", 1, "…"),
    ],
)
def test_truncate_ellipsis(input, count, expected):
    text = Text(input)
    text.truncate(count, overflow="ellipsis")
    assert text.plain == expected


@pytest.mark.parametrize(
    "input, count, expected",
    [
        ("Hello", 5, "Hello"),
        ("Hello", 10, "Hello     "),
        ("Hello", 3, "He…"),
    ],
)
def test_truncate_ellipsis_pad(input, count, expected):
    text = Text(input)
    text.truncate(count, overflow="ellipsis", pad=True)
    assert text.plain == expected


def test_pad():
    text = Text("foo")
    text.pad(2)
    assert text.plain == "  foo  "


def test_align_left():
    text = Text("foo")
    text.align("left", 10)
    assert text.plain == "foo       "


def test_align_right():
    text = Text("foo")
    text.align("right", 10)
    assert text.plain == "       foo"


def test_align_center():
    text = Text("foo")
    text.align("center", 10)
    assert text.plain == "   foo    "


def test_detect_indentation():
    text = """\
foo
    bar
    """
    assert Text(text).detect_indentation() == 4
    text = """\
foo
    bar
      baz
    """
    assert Text(text).detect_indentation() == 2
    assert Text("").detect_indentation() == 1
    assert Text(" ").detect_indentation() == 1


def test_indentation_guides():
    text = Text(
        """\
for a in range(10):
    print(a)

foo = [
    1,
    {
        2
    }
]

"""
    )
    result = text.with_indent_guides()
    print(result.plain)
    print(repr(result.plain))
    expected = "for a in range(10):\n│   print(a)\n\nfoo = [\n│   1,\n│   {\n│   │   2\n│   }\n]\n\n"
    assert result.plain == expected


def test_slice():
    text = Text.from_markup("[red]foo [bold]bar[/red] baz[/bold]")
    assert text[0] == Text("f", spans=[Span(0, 1, "red")])
    assert text[4] == Text("b", spans=[Span(0, 1, "red"), Span(0, 1, "bold")])

    assert text[:3] == Text("foo", spans=[Span(0, 3, "red")])
    assert text[:4] == Text("foo ", spans=[Span(0, 4, "red")])
    assert text[:5] == Text("foo b", spans=[Span(0, 5, "red"), Span(4, 5, "bold")])
    assert text[4:] == Text("bar baz", spans=[Span(0, 3, "red"), Span(0, 7, "bold")])

    with pytest.raises(TypeError):
        text[::-1]


def test_wrap_invalid_style():
    # https://github.com/textualize/rich/issues/987
    console = Console(width=100, color_system="truecolor")
    a = "[#######.................] xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx [#######.................]"
    console.print(a, justify="full")


def test_apply_meta():
    text = Text("foobar")
    text.apply_meta({"foo": "bar"}, 1, 3)

    console = Console()
    assert text.get_style_at_offset(console, 0).meta == {}
    assert text.get_style_at_offset(console, 1).meta == {"foo": "bar"}
    assert text.get_style_at_offset(console, 2).meta == {"foo": "bar"}
    assert text.get_style_at_offset(console, 3).meta == {}


def test_on():
    console = Console()
    text = Text("foo")
    text.on({"foo": "bar"}, click="CLICK")
    expected = {"foo": "bar", "@click": "CLICK"}
    assert text.get_style_at_offset(console, 0).meta == expected
    assert text.get_style_at_offset(console, 1).meta == expected
    assert text.get_style_at_offset(console, 2).meta == expected


def test_markup_property():
    assert Text("").markup == ""
    assert Text("foo").markup == "foo"
    assert Text("foo", style="bold").markup == "[bold]foo[/bold]"
    assert Text.from_markup("foo [red]bar[/red]").markup == "foo [red]bar[/red]"
    assert (
        Text.from_markup("foo [red]bar[/red]", style="bold").markup
        == "[bold]foo [red]bar[/red][/bold]"
    )
    assert (
        Text.from_markup("[bold]foo [italic]bar[/bold] baz[/italic]").markup
        == "[bold]foo [italic]bar[/bold] baz[/italic]"
    )
    assert Text("[bold]foo").markup == "\\[bold]foo"


def test_extend_style():
    text = Text.from_markup("[red]foo[/red] [bold]bar")
    text.extend_style(0)

    assert text.plain == "foo bar"
    assert text.spans == [Span(0, 3, "red"), Span(4, 7, "bold")]

    text.extend_style(-1)
    assert text.plain == "foo bar"
    assert text.spans == [Span(0, 3, "red"), Span(4, 7, "bold")]

    text.extend_style(2)
    assert text.plain == "foo bar  "
    assert text.spans == [Span(0, 3, "red"), Span(4, 9, "bold")]


def test_append_tokens() -> None:
    """Regression test for https://github.com/Textualize/rich/issues/3014"""

    console = Console()
    t = Text().append_tokens(
        [
            (
                "long text that will be wrapped with a control code \r\n",
                "red",
            ),
        ]
    )
    with console.capture() as capture:
        console.print(t, width=40)

    output = capture.get()
    print(repr(output))
    assert output == "long text that will be wrapped with a \ncontrol code \n\n"


def test_append_loop_regression() -> None:
    """Regression text for https://github.com/Textualize/rich/issues/3479"""
    a = Text("one", "blue")
    a.append(a)
    assert a.plain == "oneone"

    b = Text("two", "blue")
    b.append_text(b)
    assert b.plain == "twotwo"


def test_soft_wrap() -> None:
    """Regression test for https://github.com/Textualize/rich/issues/3841

    Soft wrap should not strip trailing whitespace.

    """
    console = Console(color_system="standard", width=80, force_terminal=True)
    text = Text(" Hello World ", style="white on blue")

    with console.capture() as capture:
        console.print(text, soft_wrap=True)

    output = capture.get()
    print(repr(output))
    expected = "\x1b[37;44m Hello World \x1b[0m\n"
    assert output == expected


def test_soft_wrap_styled() -> None:
    """Regression test for https://github.com/Textualize/rich/issues/3838

    If soft_wrap is True and a style is set, we don't want to style the new lines.
    """
    console = Console(color_system="standard", width=80, force_terminal=True)
    with console.capture() as capture:
        console.print("soft wrap is on", style="blue on white", soft_wrap=True)
        console.print("Next line")

    output = capture.get()
    print(repr(output))
    # Background is reset before \n
    expected = "\x1b[34;47msoft wrap is on\x1b[0m\nNext line\n"
    assert output == expected