mirror of
https://github.com/django/django.git
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332 lines
14 KiB
Python
332 lines
14 KiB
Python
import json
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import sys
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from unittest.mock import patch
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from django.core.exceptions import SuspiciousFileOperation
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from django.test import SimpleTestCase
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from django.utils import text
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from django.utils.functional import lazystr
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from django.utils.text import format_lazy
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from django.utils.translation import gettext_lazy, override
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IS_WIDE_BUILD = len("\U0001F4A9") == 1
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class TestUtilsText(SimpleTestCase):
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def test_get_text_list(self):
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self.assertEqual(text.get_text_list(["a", "b", "c", "d"]), "a, b, c or d")
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self.assertEqual(text.get_text_list(["a", "b", "c"], "and"), "a, b and c")
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self.assertEqual(text.get_text_list(["a", "b"], "and"), "a and b")
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self.assertEqual(text.get_text_list(["a"]), "a")
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self.assertEqual(text.get_text_list([]), "")
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with override("ar"):
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self.assertEqual(text.get_text_list(["a", "b", "c"]), "a، b أو c")
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def test_smart_split(self):
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testdata = [
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('This is "a person" test.', ["This", "is", '"a person"', "test."]),
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('This is "a person\'s" test.', ["This", "is", '"a person\'s"', "test."]),
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('This is "a person\\"s" test.', ["This", "is", '"a person\\"s"', "test."]),
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("\"a 'one", ['"a', "'one"]),
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("all friends' tests", ["all", "friends'", "tests"]),
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(
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'url search_page words="something else"',
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["url", "search_page", 'words="something else"'],
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),
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(
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"url search_page words='something else'",
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["url", "search_page", "words='something else'"],
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),
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(
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'url search_page words "something else"',
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["url", "search_page", "words", '"something else"'],
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),
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(
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'url search_page words-"something else"',
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["url", "search_page", 'words-"something else"'],
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),
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("url search_page words=hello", ["url", "search_page", "words=hello"]),
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(
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'url search_page words="something else',
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["url", "search_page", 'words="something', "else"],
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),
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("cut:','|cut:' '", ["cut:','|cut:' '"]),
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(lazystr("a b c d"), ["a", "b", "c", "d"]), # Test for #20231
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]
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for test, expected in testdata:
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with self.subTest(value=test):
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self.assertEqual(list(text.smart_split(test)), expected)
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def test_truncate_chars(self):
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truncator = text.Truncator("The quick brown fox jumped over the lazy dog.")
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self.assertEqual(
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"The quick brown fox jumped over the lazy dog.", truncator.chars(100)
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),
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self.assertEqual("The quick brown fox …", truncator.chars(21))
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self.assertEqual("The quick brown fo.....", truncator.chars(23, "....."))
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self.assertEqual(".....", truncator.chars(4, "....."))
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nfc = text.Truncator("o\xfco\xfco\xfco\xfc")
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nfd = text.Truncator("ou\u0308ou\u0308ou\u0308ou\u0308")
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self.assertEqual("oüoüoüoü", nfc.chars(8))
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self.assertEqual("oüoüoüoü", nfd.chars(8))
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self.assertEqual("oü…", nfc.chars(3))
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self.assertEqual("oü…", nfd.chars(3))
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# Ensure the final length is calculated correctly when there are
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# combining characters with no precomposed form, and that combining
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# characters are not split up.
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truncator = text.Truncator("-B\u030AB\u030A----8")
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self.assertEqual("-B\u030A…", truncator.chars(3))
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self.assertEqual("-B\u030AB\u030A-…", truncator.chars(5))
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self.assertEqual("-B\u030AB\u030A----8", truncator.chars(8))
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# Ensure the length of the end text is correctly calculated when it
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# contains combining characters with no precomposed form.
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truncator = text.Truncator("-----")
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self.assertEqual("---B\u030A", truncator.chars(4, "B\u030A"))
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self.assertEqual("-----", truncator.chars(5, "B\u030A"))
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# Make a best effort to shorten to the desired length, but requesting
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# a length shorter than the ellipsis shouldn't break
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self.assertEqual("…", text.Truncator("asdf").chars(0))
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# lazy strings are handled correctly
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self.assertEqual(
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text.Truncator(lazystr("The quick brown fox")).chars(10), "The quick…"
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)
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@patch("django.utils.text.Truncator.MAX_LENGTH_HTML", 10_000)
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def test_truncate_chars_html_size_limit(self):
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max_len = text.Truncator.MAX_LENGTH_HTML
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bigger_len = text.Truncator.MAX_LENGTH_HTML + 1
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valid_html = "<p>Joel is a slug</p>" # 14 chars
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perf_test_values = [
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("</a" + "\t" * (max_len - 6) + "//>", None),
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("</p" + "\t" * bigger_len + "//>", "</p" + "\t" * 6 + "…"),
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("&" * bigger_len, "&" * 9 + "…"),
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("_X<<<<<<<<<<<>", None),
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(valid_html * bigger_len, "<p>Joel is a…</p>"), # 10 chars
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]
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for value, expected in perf_test_values:
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with self.subTest(value=value):
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truncator = text.Truncator(value)
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self.assertEqual(
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expected if expected else value, truncator.chars(10, html=True)
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)
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def test_truncate_words(self):
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truncator = text.Truncator("The quick brown fox jumped over the lazy dog.")
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self.assertEqual(
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"The quick brown fox jumped over the lazy dog.", truncator.words(10)
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)
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self.assertEqual("The quick brown fox…", truncator.words(4))
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self.assertEqual("The quick brown fox[snip]", truncator.words(4, "[snip]"))
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# lazy strings are handled correctly
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truncator = text.Truncator(
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lazystr("The quick brown fox jumped over the lazy dog.")
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)
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self.assertEqual("The quick brown fox…", truncator.words(4))
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def test_truncate_html_words(self):
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truncator = text.Truncator(
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'<p id="par"><strong><em>The quick brown fox jumped over the lazy dog.</em>'
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"</strong></p>"
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)
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self.assertEqual(
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'<p id="par"><strong><em>The quick brown fox jumped over the lazy dog.</em>'
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"</strong></p>",
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truncator.words(10, html=True),
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)
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self.assertEqual(
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'<p id="par"><strong><em>The quick brown fox…</em></strong></p>',
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truncator.words(4, html=True),
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)
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self.assertEqual(
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'<p id="par"><strong><em>The quick brown fox....</em></strong></p>',
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truncator.words(4, "....", html=True),
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)
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self.assertEqual(
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'<p id="par"><strong><em>The quick brown fox</em></strong></p>',
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truncator.words(4, "", html=True),
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)
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# Test with new line inside tag
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truncator = text.Truncator(
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'<p>The quick <a href="xyz.html"\n id="mylink">brown fox</a> jumped over '
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"the lazy dog.</p>"
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)
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self.assertEqual(
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'<p>The quick <a href="xyz.html"\n id="mylink">brown…</a></p>',
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truncator.words(3, html=True),
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)
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# Test self-closing tags
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truncator = text.Truncator(
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"<br/>The <hr />quick brown fox jumped over the lazy dog."
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)
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self.assertEqual("<br/>The <hr />quick brown…", truncator.words(3, html=True))
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truncator = text.Truncator(
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"<br>The <hr/>quick <em>brown fox</em> jumped over the lazy dog."
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)
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self.assertEqual(
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"<br>The <hr/>quick <em>brown…</em>", truncator.words(3, html=True)
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)
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# Test html entities
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truncator = text.Truncator(
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"<i>Buenos días! ¿Cómo está?</i>"
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)
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self.assertEqual(
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"<i>Buenos días! ¿Cómo…</i>",
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truncator.words(3, html=True),
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)
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truncator = text.Truncator("<p>I <3 python, what about you?</p>")
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self.assertEqual("<p>I <3 python,…</p>", truncator.words(3, html=True))
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@patch("django.utils.text.Truncator.MAX_LENGTH_HTML", 10_000)
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def test_truncate_words_html_size_limit(self):
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max_len = text.Truncator.MAX_LENGTH_HTML
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bigger_len = text.Truncator.MAX_LENGTH_HTML + 1
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valid_html = "<p>Joel is a slug</p>" # 4 words
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perf_test_values = [
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("</a" + "\t" * (max_len - 6) + "//>", None),
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("</p" + "\t" * bigger_len + "//>", "</p" + "\t" * (max_len - 3) + "…"),
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("&" * max_len, None), # no change
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("&" * bigger_len, "&" * max_len + "…"),
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("_X<<<<<<<<<<<>", None),
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(valid_html * bigger_len, valid_html * 12 + "<p>Joel is…</p>"), # 50 words
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]
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for value, expected in perf_test_values:
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with self.subTest(value=value):
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truncator = text.Truncator(value)
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self.assertEqual(
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expected if expected else value, truncator.words(50, html=True)
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)
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def test_wrap(self):
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digits = "1234 67 9"
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self.assertEqual(text.wrap(digits, 100), "1234 67 9")
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self.assertEqual(text.wrap(digits, 9), "1234 67 9")
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self.assertEqual(text.wrap(digits, 8), "1234 67\n9")
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self.assertEqual(text.wrap("short\na long line", 7), "short\na long\nline")
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self.assertEqual(
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text.wrap("do-not-break-long-words please? ok", 8),
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"do-not-break-long-words\nplease?\nok",
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)
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long_word = "l%sng" % ("o" * 20)
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self.assertEqual(text.wrap(long_word, 20), long_word)
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self.assertEqual(
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text.wrap("a %s word" % long_word, 10), "a\n%s\nword" % long_word
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)
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self.assertEqual(text.wrap(lazystr(digits), 100), "1234 67 9")
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def test_normalize_newlines(self):
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self.assertEqual(
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text.normalize_newlines("abc\ndef\rghi\r\n"), "abc\ndef\nghi\n"
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)
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self.assertEqual(text.normalize_newlines("\n\r\r\n\r"), "\n\n\n\n")
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self.assertEqual(text.normalize_newlines("abcdefghi"), "abcdefghi")
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self.assertEqual(text.normalize_newlines(""), "")
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self.assertEqual(
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text.normalize_newlines(lazystr("abc\ndef\rghi\r\n")), "abc\ndef\nghi\n"
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)
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def test_phone2numeric(self):
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numeric = text.phone2numeric("0800 flowers")
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self.assertEqual(numeric, "0800 3569377")
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lazy_numeric = lazystr(text.phone2numeric("0800 flowers"))
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self.assertEqual(lazy_numeric, "0800 3569377")
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def test_slugify(self):
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items = (
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# given - expected - Unicode?
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("Hello, World!", "hello-world", False),
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("spam & eggs", "spam-eggs", False),
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(" multiple---dash and space ", "multiple-dash-and-space", False),
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("\t whitespace-in-value \n", "whitespace-in-value", False),
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("underscore_in-value", "underscore_in-value", False),
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("__strip__underscore-value___", "strip__underscore-value", False),
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("--strip-dash-value---", "strip-dash-value", False),
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("__strip-mixed-value---", "strip-mixed-value", False),
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("_ -strip-mixed-value _-", "strip-mixed-value", False),
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("spam & ıçüş", "spam-ıçüş", True),
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("foo ıç bar", "foo-ıç-bar", True),
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(" foo ıç bar", "foo-ıç-bar", True),
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("你好", "你好", True),
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("İstanbul", "istanbul", True),
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)
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for value, output, is_unicode in items:
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with self.subTest(value=value):
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self.assertEqual(text.slugify(value, allow_unicode=is_unicode), output)
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# Interning the result may be useful, e.g. when fed to Path.
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with self.subTest("intern"):
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self.assertEqual(sys.intern(text.slugify("a")), "a")
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def test_unescape_string_literal(self):
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items = [
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('"abc"', "abc"),
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("'abc'", "abc"),
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('"a "bc""', 'a "bc"'),
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("''ab' c'", "'ab' c"),
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]
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for value, output in items:
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with self.subTest(value=value):
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self.assertEqual(text.unescape_string_literal(value), output)
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self.assertEqual(text.unescape_string_literal(lazystr(value)), output)
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def test_unescape_string_literal_invalid_value(self):
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items = ["", "abc", "'abc\""]
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for item in items:
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msg = f"Not a string literal: {item!r}"
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with self.assertRaisesMessage(ValueError, msg):
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text.unescape_string_literal(item)
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def test_get_valid_filename(self):
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filename = "^&'@{}[],$=!-#()%+~_123.txt"
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self.assertEqual(text.get_valid_filename(filename), "-_123.txt")
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self.assertEqual(text.get_valid_filename(lazystr(filename)), "-_123.txt")
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msg = "Could not derive file name from '???'"
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with self.assertRaisesMessage(SuspiciousFileOperation, msg):
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text.get_valid_filename("???")
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# After sanitizing this would yield '..'.
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msg = "Could not derive file name from '$.$.$'"
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with self.assertRaisesMessage(SuspiciousFileOperation, msg):
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text.get_valid_filename("$.$.$")
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def test_compress_sequence(self):
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data = [{"key": i} for i in range(10)]
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seq = list(json.JSONEncoder().iterencode(data))
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seq = [s.encode() for s in seq]
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actual_length = len(b"".join(seq))
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out = text.compress_sequence(seq)
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compressed_length = len(b"".join(out))
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self.assertLess(compressed_length, actual_length)
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def test_format_lazy(self):
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self.assertEqual("django/test", format_lazy("{}/{}", "django", lazystr("test")))
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self.assertEqual("django/test", format_lazy("{0}/{1}", *("django", "test")))
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self.assertEqual(
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"django/test", format_lazy("{a}/{b}", **{"a": "django", "b": "test"})
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)
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self.assertEqual(
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"django/test", format_lazy("{a[0]}/{a[1]}", a=("django", "test"))
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)
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t = {}
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s = format_lazy("{0[a]}-{p[a]}", t, p=t)
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t["a"] = lazystr("django")
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self.assertEqual("django-django", s)
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t["a"] = "update"
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self.assertEqual("update-update", s)
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# The format string can be lazy. (string comes from contrib.admin)
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s = format_lazy(
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gettext_lazy("Added {name} “{object}”."),
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name="article",
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object="My first try",
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)
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with override("fr"):
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self.assertEqual("Ajout de article «\xa0My first try\xa0».", s)
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