227 lines
6.5 KiB
Python
227 lines
6.5 KiB
Python
import pytest
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import pandas._testing as tm
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from pandas.io.formats.css import CSSResolver, CSSWarning
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def assert_resolves(css, props, inherited=None):
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resolve = CSSResolver()
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actual = resolve(css, inherited=inherited)
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assert props == actual
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def assert_same_resolution(css1, css2, inherited=None):
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resolve = CSSResolver()
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resolved1 = resolve(css1, inherited=inherited)
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resolved2 = resolve(css2, inherited=inherited)
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assert resolved1 == resolved2
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@pytest.mark.parametrize(
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"name,norm,abnorm",
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[
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(
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"whitespace",
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"hello: world; foo: bar",
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" \t hello \t :\n world \n ; \n foo: \tbar\n\n",
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),
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("case", "hello: world; foo: bar", "Hello: WORLD; foO: bar"),
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("empty-decl", "hello: world; foo: bar", "; hello: world;; foo: bar;\n; ;"),
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("empty-list", "", ";"),
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],
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)
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def test_css_parse_normalisation(name, norm, abnorm):
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assert_same_resolution(norm, abnorm)
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@pytest.mark.parametrize(
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"invalid_css,remainder",
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[
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# No colon
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("hello-world", ""),
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("border-style: solid; hello-world", "border-style: solid"),
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(
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"border-style: solid; hello-world; font-weight: bold",
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"border-style: solid; font-weight: bold",
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),
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# Unclosed string fail
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# Invalid size
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("font-size: blah", "font-size: 1em"),
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("font-size: 1a2b", "font-size: 1em"),
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("font-size: 1e5pt", "font-size: 1em"),
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("font-size: 1+6pt", "font-size: 1em"),
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("font-size: 1unknownunit", "font-size: 1em"),
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("font-size: 10", "font-size: 1em"),
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("font-size: 10 pt", "font-size: 1em"),
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],
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)
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def test_css_parse_invalid(invalid_css, remainder):
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with tm.assert_produces_warning(CSSWarning):
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assert_same_resolution(invalid_css, remainder)
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@pytest.mark.parametrize(
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"shorthand,expansions",
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[
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("margin", ["margin-top", "margin-right", "margin-bottom", "margin-left"]),
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("padding", ["padding-top", "padding-right", "padding-bottom", "padding-left"]),
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(
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"border-width",
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[
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"border-top-width",
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"border-right-width",
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"border-bottom-width",
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"border-left-width",
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],
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),
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(
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"border-color",
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[
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"border-top-color",
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"border-right-color",
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"border-bottom-color",
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"border-left-color",
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],
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),
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(
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"border-style",
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[
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"border-top-style",
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"border-right-style",
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"border-bottom-style",
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"border-left-style",
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],
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),
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],
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)
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def test_css_side_shorthands(shorthand, expansions):
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top, right, bottom, left = expansions
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assert_resolves(
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f"{shorthand}: 1pt", {top: "1pt", right: "1pt", bottom: "1pt", left: "1pt"}
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)
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assert_resolves(
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f"{shorthand}: 1pt 4pt", {top: "1pt", right: "4pt", bottom: "1pt", left: "4pt"}
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)
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assert_resolves(
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f"{shorthand}: 1pt 4pt 2pt",
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{top: "1pt", right: "4pt", bottom: "2pt", left: "4pt"},
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)
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assert_resolves(
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f"{shorthand}: 1pt 4pt 2pt 0pt",
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{top: "1pt", right: "4pt", bottom: "2pt", left: "0pt"},
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)
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with tm.assert_produces_warning(CSSWarning):
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assert_resolves(f"{shorthand}: 1pt 1pt 1pt 1pt 1pt", {})
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@pytest.mark.parametrize(
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"style,inherited,equiv",
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[
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("margin: 1px; margin: 2px", "", "margin: 2px"),
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("margin: 1px", "margin: 2px", "margin: 1px"),
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("margin: 1px; margin: inherit", "margin: 2px", "margin: 2px"),
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(
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"margin: 1px; margin-top: 2px",
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"",
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"margin-left: 1px; margin-right: 1px; "
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+ "margin-bottom: 1px; margin-top: 2px",
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),
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("margin-top: 2px", "margin: 1px", "margin: 1px; margin-top: 2px"),
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("margin: 1px", "margin-top: 2px", "margin: 1px"),
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(
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"margin: 1px; margin-top: inherit",
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"margin: 2px",
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"margin: 1px; margin-top: 2px",
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),
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],
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)
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def test_css_precedence(style, inherited, equiv):
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resolve = CSSResolver()
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inherited_props = resolve(inherited)
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style_props = resolve(style, inherited=inherited_props)
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equiv_props = resolve(equiv)
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assert style_props == equiv_props
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@pytest.mark.parametrize(
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"style,equiv",
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[
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(
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"margin: 1px; margin-top: inherit",
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"margin-bottom: 1px; margin-right: 1px; margin-left: 1px",
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),
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("margin-top: inherit", ""),
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("margin-top: initial", ""),
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],
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)
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def test_css_none_absent(style, equiv):
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assert_same_resolution(style, equiv)
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@pytest.mark.parametrize(
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"size,resolved",
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[
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("xx-small", "6pt"),
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("x-small", f"{7.5:f}pt"),
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("small", f"{9.6:f}pt"),
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("medium", "12pt"),
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("large", f"{13.5:f}pt"),
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("x-large", "18pt"),
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("xx-large", "24pt"),
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("8px", "6pt"),
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("1.25pc", "15pt"),
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(".25in", "18pt"),
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("02.54cm", "72pt"),
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("25.4mm", "72pt"),
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("101.6q", "72pt"),
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("101.6q", "72pt"),
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],
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)
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@pytest.mark.parametrize("relative_to", [None, "16pt"]) # invariant to inherited size
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def test_css_absolute_font_size(size, relative_to, resolved):
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if relative_to is None:
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inherited = None
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else:
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inherited = {"font-size": relative_to}
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assert_resolves(f"font-size: {size}", {"font-size": resolved}, inherited=inherited)
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@pytest.mark.parametrize(
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"size,relative_to,resolved",
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[
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("1em", None, "12pt"),
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("1.0em", None, "12pt"),
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("1.25em", None, "15pt"),
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("1em", "16pt", "16pt"),
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("1.0em", "16pt", "16pt"),
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("1.25em", "16pt", "20pt"),
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("1rem", "16pt", "12pt"),
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("1.0rem", "16pt", "12pt"),
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("1.25rem", "16pt", "15pt"),
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("100%", None, "12pt"),
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("125%", None, "15pt"),
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("100%", "16pt", "16pt"),
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("125%", "16pt", "20pt"),
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("2ex", None, "12pt"),
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("2.0ex", None, "12pt"),
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("2.50ex", None, "15pt"),
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("inherit", "16pt", "16pt"),
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("smaller", None, "10pt"),
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("smaller", "18pt", "15pt"),
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("larger", None, f"{14.4:f}pt"),
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("larger", "15pt", "18pt"),
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],
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)
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def test_css_relative_font_size(size, relative_to, resolved):
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if relative_to is None:
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inherited = None
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else:
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inherited = {"font-size": relative_to}
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assert_resolves(f"font-size: {size}", {"font-size": resolved}, inherited=inherited)
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