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test_html.py
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from textwrap import dedent
import numpy as np
import pytest
from pandas import (
DataFrame,
MultiIndex,
)
jinja2 = pytest.importorskip("jinja2")
from pandas.io.formats.style import Styler
loader = jinja2.PackageLoader("pandas", "io/formats/templates")
env = jinja2.Environment(loader=loader, trim_blocks=True)
@pytest.fixture
def styler():
return Styler(DataFrame([[2.61], [2.69]], index=["a", "b"], columns=["A"]))
@pytest.fixture
def styler_mi():
midx = MultiIndex.from_product([["a", "b"], ["c", "d"]])
return Styler(DataFrame(np.arange(16).reshape(4, 4), index=midx, columns=midx))
@pytest.fixture
def tpl_style():
return env.get_template("html_style.tpl")
@pytest.fixture
def tpl_table():
return env.get_template("html_table.tpl")
def test_html_template_extends_options():
# make sure if templates are edited tests are updated as are setup fixtures
# to understand the dependency
with open("pandas/io/formats/templates/html.tpl") as file:
result = file.read()
assert "{% include html_style_tpl %}" in result
assert "{% include html_table_tpl %}" in result
def test_exclude_styles(styler):
result = styler.to_html(exclude_styles=True, doctype_html=True)
expected = dedent(
"""\
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
</head>
<body>
<table>
<thead>
<tr>
<th > </th>
<th >A</th>
</tr>
</thead>
<tbody>
<tr>
<th >a</th>
<td >2.610000</td>
</tr>
<tr>
<th >b</th>
<td >2.690000</td>
</tr>
</tbody>
</table>
</body>
</html>
"""
)
assert result == expected
def test_w3_html_format(styler):
styler.set_uuid("").set_table_styles(
[{"selector": "th", "props": "att2:v2;"}]
).applymap(lambda x: "att1:v1;").set_table_attributes(
'class="my-cls1" style="attr3:v3;"'
).set_td_classes(
DataFrame(["my-cls2"], index=["a"], columns=["A"])
).format(
"{:.1f}"
).set_caption(
"A comprehensive test"
)
expected = dedent(
"""\
<style type="text/css">
#T_ th {
att2: v2;
}
#T_row0_col0, #T_row1_col0 {
att1: v1;
}
</style>
<table id="T_" class="my-cls1" style="attr3:v3;">
<caption>A comprehensive test</caption>
<thead>
<tr>
<th class="blank level0" > </th>
<th class="col_heading level0 col0" >A</th>
</tr>
</thead>
<tbody>
<tr>
<th id="T_level0_row0" class="row_heading level0 row0" >a</th>
<td id="T_row0_col0" class="data row0 col0 my-cls2" >2.6</td>
</tr>
<tr>
<th id="T_level0_row1" class="row_heading level0 row1" >b</th>
<td id="T_row1_col0" class="data row1 col0" >2.7</td>
</tr>
</tbody>
</table>
"""
)
assert expected == styler.render()
def test_colspan_w3():
# GH 36223
df = DataFrame(data=[[1, 2]], columns=[["l0", "l0"], ["l1a", "l1b"]])
styler = Styler(df, uuid="_", cell_ids=False)
assert '<th class="col_heading level0 col0" colspan="2">l0</th>' in styler.render()
def test_rowspan_w3():
# GH 38533
df = DataFrame(data=[[1, 2]], index=[["l0", "l0"], ["l1a", "l1b"]])
styler = Styler(df, uuid="_", cell_ids=False)
assert (
'<th id="T___level0_row0" class="row_heading '
'level0 row0" rowspan="2">l0</th>' in styler.render()
)
def test_styles(styler):
styler.set_uuid("abc_")
styler.set_table_styles([{"selector": "td", "props": "color: red;"}])
result = styler.to_html(doctype_html=True)
expected = dedent(
"""\
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<style type="text/css">
#T_abc_ td {
color: red;
}
</style>
</head>
<body>
<table id="T_abc_">
<thead>
<tr>
<th class="blank level0" > </th>
<th class="col_heading level0 col0" >A</th>
</tr>
</thead>
<tbody>
<tr>
<th id="T_abc_level0_row0" class="row_heading level0 row0" >a</th>
<td id="T_abc_row0_col0" class="data row0 col0" >2.610000</td>
</tr>
<tr>
<th id="T_abc_level0_row1" class="row_heading level0 row1" >b</th>
<td id="T_abc_row1_col0" class="data row1 col0" >2.690000</td>
</tr>
</tbody>
</table>
</body>
</html>
"""
)
assert result == expected
def test_doctype(styler):
result = styler.to_html(doctype_html=False)
assert "<html>" not in result
assert "<body>" not in result
assert "<!DOCTYPE html>" not in result
assert "<head>" not in result
def test_block_names(tpl_style, tpl_table):
# catch accidental removal of a block
expected_style = {
"before_style",
"style",
"table_styles",
"before_cellstyle",
"cellstyle",
}
expected_table = {
"before_table",
"table",
"caption",
"thead",
"tbody",
"after_table",
"before_head_rows",
"head_tr",
"after_head_rows",
"before_rows",
"tr",
"after_rows",
}
result1 = set(tpl_style.blocks)
assert result1 == expected_style
result2 = set(tpl_table.blocks)
assert result2 == expected_table
def test_from_custom_template_table(tmpdir):
p = tmpdir.mkdir("tpl").join("myhtml_table.tpl")
p.write(
dedent(
"""\
{% extends "html_table.tpl" %}
{% block table %}
<h1>{{custom_title}}</h1>
{{ super() }}
{% endblock table %}"""
)
)
result = Styler.from_custom_template(str(tmpdir.join("tpl")), "myhtml_table.tpl")
assert issubclass(result, Styler)
assert result.env is not Styler.env
assert result.template_html_table is not Styler.template_html_table
styler = result(DataFrame({"A": [1, 2]}))
assert "<h1>My Title</h1>\n\n\n<table" in styler.render(custom_title="My Title")
def test_from_custom_template_style(tmpdir):
p = tmpdir.mkdir("tpl").join("myhtml_style.tpl")
p.write(
dedent(
"""\
{% extends "html_style.tpl" %}
{% block style %}
<link rel="stylesheet" href="mystyle.css">
{{ super() }}
{% endblock style %}"""
)
)
result = Styler.from_custom_template(
str(tmpdir.join("tpl")), html_style="myhtml_style.tpl"
)
assert issubclass(result, Styler)
assert result.env is not Styler.env
assert result.template_html_style is not Styler.template_html_style
styler = result(DataFrame({"A": [1, 2]}))
assert '<link rel="stylesheet" href="mystyle.css">\n\n<style' in styler.render()
def test_caption_as_sequence(styler):
styler.set_caption(("full cap", "short cap"))
assert "<caption>full cap</caption>" in styler.render()
@pytest.mark.parametrize("index", [False, True])
@pytest.mark.parametrize("columns", [False, True])
@pytest.mark.parametrize("index_name", [True, False])
def test_sticky_basic(styler, index, columns, index_name):
if index_name:
styler.index.name = "some text"
if index:
styler.set_sticky(axis=0)
if columns:
styler.set_sticky(axis=1)
res = styler.set_uuid("").to_html()
css_for_index = (
"tr th:first-child {\n position: sticky;\n background-color: white;\n "
"left: 0px;\n z-index: 1;\n}"
)
assert (css_for_index in res) is index
css_for_cols_1 = (
"thead tr:first-child {\n position: sticky;\n background-color: white;\n "
"top: 0px;\n z-index: 2;\n"
)
css_for_cols_1 += " height: 25px;\n}" if index_name else "}"
assert (css_for_cols_1 in res) is columns
css_for_cols_2 = (
"thead tr:nth-child(2) {\n position: sticky;\n background-color: white;\n "
"top: 25px;\n z-index: 2;\n height: 25px;\n}"
)
assert (css_for_cols_2 in res) is (index_name and columns)
@pytest.mark.parametrize("index", [False, True])
@pytest.mark.parametrize("columns", [False, True])
def test_sticky_mi(styler_mi, index, columns):
if index:
styler_mi.set_sticky(axis=0)
if columns:
styler_mi.set_sticky(axis=1)
res = styler_mi.set_uuid("").to_html()
assert (
(
dedent(
"""\
#T_ tbody th.level0 {
position: sticky;
left: 0px;
min-width: 75px;
max-width: 75px;
background-color: white;
}
"""
)
in res
)
is index
)
assert (
(
dedent(
"""\
#T_ tbody th.level1 {
position: sticky;
left: 75px;
min-width: 75px;
max-width: 75px;
background-color: white;
}
"""
)
in res
)
is index
)
assert (
(
dedent(
"""\
#T_ thead th.level0 {
position: sticky;
top: 0px;
height: 25px;
background-color: white;
}
"""
)
in res
)
is columns
)
assert (
(
dedent(
"""\
#T_ thead th.level1 {
position: sticky;
top: 25px;
height: 25px;
background-color: white;
}
"""
)
in res
)
is columns
)
@pytest.mark.parametrize("index", [False, True])
@pytest.mark.parametrize("columns", [False, True])
def test_sticky_levels(styler_mi, index, columns):
if index:
styler_mi.set_sticky(axis=0, levels=[1])
if columns:
styler_mi.set_sticky(axis=1, levels=[1])
res = styler_mi.set_uuid("").to_html()
assert "#T_ tbody th.level0 {" not in res
assert "#T_ thead th.level0 {" not in res
assert (
(
dedent(
"""\
#T_ tbody th.level1 {
position: sticky;
left: 0px;
min-width: 75px;
max-width: 75px;
background-color: white;
}
"""
)
in res
)
is index
)
assert (
(
dedent(
"""\
#T_ thead th.level1 {
position: sticky;
top: 0px;
height: 25px;
background-color: white;
}
"""
)
in res
)
is columns
)
def test_sticky_raises(styler):
with pytest.raises(ValueError, match="`axis` must be"):
styler.set_sticky(axis="bad")