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import pickle
import random
from collections import deque
from copy import copy as shallow_copy
import pytest
from markupsafe import Markup
from jinja2.utils import consume
from jinja2.utils import generate_lorem_ipsum
from jinja2.utils import LRUCache
from jinja2.utils import missing
from jinja2.utils import object_type_repr
from jinja2.utils import select_autoescape
from jinja2.utils import urlize
class TestLRUCache:
def test_simple(self):
d = LRUCache(3)
d["a"] = 1
d["b"] = 2
d["c"] = 3
d["a"]
d["d"] = 4
assert d.keys() == ["d", "a", "c"]
def test_values(self):
cache = LRUCache(3)
cache["b"] = 1
cache["a"] = 2
assert cache.values() == [2, 1]
def test_values_empty(self):
cache = LRUCache(2)
assert cache.values() == []
def test_pickleable(self):
cache = LRUCache(2)
cache["foo"] = 42
cache["bar"] = 23
cache["foo"]
for protocol in range(3):
copy = pickle.loads(pickle.dumps(cache, protocol))
assert copy.capacity == cache.capacity
assert copy._mapping == cache._mapping
assert copy._queue == cache._queue
@pytest.mark.parametrize("copy_func", [LRUCache.copy, shallow_copy])
def test_copy(self, copy_func):
cache = LRUCache(2)
cache["a"] = 1
cache["b"] = 2
copy = copy_func(cache)
assert copy._queue == cache._queue
copy["c"] = 3
assert copy._queue != cache._queue
assert copy.keys() == ["c", "b"]
def test_clear(self):
d = LRUCache(3)
d["a"] = 1
d["b"] = 2
d["c"] = 3
d.clear()
assert d.__getstate__() == {"capacity": 3, "_mapping": {}, "_queue": deque([])}
def test_repr(self):
d = LRUCache(3)
d["a"] = 1
d["b"] = 2
d["c"] = 3
# Sort the strings - mapping is unordered
assert sorted(repr(d)) == sorted("<LRUCache {'a': 1, 'b': 2, 'c': 3}>")
def test_items(self):
"""Test various items, keys, values and iterators of LRUCache."""
d = LRUCache(3)
d["a"] = 1
d["b"] = 2
d["c"] = 3
assert d.items() == [("c", 3), ("b", 2), ("a", 1)]
assert d.keys() == ["c", "b", "a"]
assert d.values() == [3, 2, 1]
assert list(reversed(d)) == ["a", "b", "c"]
# Change the cache a little
d["b"]
d["a"] = 4
assert d.items() == [("a", 4), ("b", 2), ("c", 3)]
assert d.keys() == ["a", "b", "c"]
assert d.values() == [4, 2, 3]
assert list(reversed(d)) == ["c", "b", "a"]
def test_setdefault(self):
d = LRUCache(3)
assert len(d) == 0
assert d.setdefault("a") is None
assert d.setdefault("a", 1) is None
assert len(d) == 1
assert d.setdefault("b", 2) == 2
assert len(d) == 2
class TestHelpers:
def test_object_type_repr(self):
class X:
pass
assert object_type_repr(42) == "int object"
assert object_type_repr([]) == "list object"
assert object_type_repr(X()) == "test_utils.X object"
assert object_type_repr(None) == "None"
assert object_type_repr(Ellipsis) == "Ellipsis"
def test_autoescape_select(self):
func = select_autoescape(
enabled_extensions=("html", ".htm"),
disabled_extensions=("txt",),
default_for_string="STRING",
default="NONE",
)
assert func(None) == "STRING"
assert func("unknown.foo") == "NONE"
assert func("foo.html")
assert func("foo.htm")
assert not func("foo.txt")
assert func("FOO.HTML")
assert not func("FOO.TXT")
class TestEscapeUrlizeTarget:
def test_escape_urlize_target(self):
url = "http://example.org"
target = "<script>"
assert urlize(url, target=target) == (
'<a href="http://example.org"'
' target="<script>">'
"http://example.org</a>"
)
class TestLoremIpsum:
def test_lorem_ipsum_markup(self):
"""Test that output of lorem_ipsum is Markup by default."""
assert isinstance(generate_lorem_ipsum(), Markup)
def test_lorem_ipsum_html(self):
"""Test that output of lorem_ipsum is a string_type when not html."""
assert isinstance(generate_lorem_ipsum(html=False), str)
def test_lorem_ipsum_n(self):
"""Test that the n (number of lines) works as expected."""
assert generate_lorem_ipsum(n=0, html=False) == ""
for n in range(1, 50):
assert generate_lorem_ipsum(n=n, html=False).count("\n") == (n - 1) * 2
def test_lorem_ipsum_min(self):
"""Test that at least min words are in the output of each line"""
for _ in range(5):
m = random.randrange(20, 99)
for _ in range(10):
assert generate_lorem_ipsum(n=1, min=m, html=False).count(" ") >= m - 1
def test_lorem_ipsum_max(self):
"""Test that at least max words are in the output of each line"""
for _ in range(5):
m = random.randrange(21, 100)
for _ in range(10):
assert generate_lorem_ipsum(n=1, max=m, html=False).count(" ") < m - 1
def test_missing():
"""Test the repr of missing."""
assert repr(missing) == "missing"
def test_consume():
"""Test that consume consumes an iterator."""
x = iter([1, 2, 3, 4, 5])
consume(x)
with pytest.raises(StopIteration):
next(x)
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