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Diffstat (limited to 'tests/test_utils.py')
| -rw-r--r-- | tests/test_utils.py | 190 |
1 files changed, 190 insertions, 0 deletions
diff --git a/tests/test_utils.py b/tests/test_utils.py new file mode 100644 index 00000000..3e24166c --- /dev/null +++ b/tests/test_utils.py @@ -0,0 +1,190 @@ +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 len(d) == 3 + assert "a" in d and "c" in d and "d" in d and "b" not in d + + def test_itervalues(self): + cache = LRUCache(3) + cache["b"] = 1 + cache["a"] = 2 + values = [v for v in cache.values()] + assert len(values) == 2 + assert 1 in values + assert 2 in values + + def test_itervalues_empty(self): + cache = LRUCache(2) + values = [v for v in cache.values()] + assert len(values) == 0 + + 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 "a" not in copy and "b" in copy and "c" in copy + + 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) |