add tests for flask.json.tag

7 years ago · fd8b95952c
2 changed files with 87 additions and 25 deletions
--- a/tests/test_basic.py
+++ b/tests/test_basic.py
@ -435,34 +435,31 @@ def test_session_special_types(app, client):
    now = datetime.utcnow().replace(microsecond=0)
    the_uuid = uuid.uuid4()

-    @app.after_request
-    def modify_session(response):
-        flask.session['m'] = flask.Markup('Hello!')
-        flask.session['u'] = the_uuid
-        flask.session['dt'] = now
-        flask.session['b'] = b'\xff'
-        flask.session['t'] = (1, 2, 3)
-        flask.session['spacefirst'] = {' t': 'not-a-tuple'}
-        flask.session['withunderscores'] = {' t__': 'not-a-tuple'}
-        flask.session['notadict'] = {' di': 'not-a-dict'}
-        return response
-
    @app.route('/')
    def dump_session_contents():
-        return pickle.dumps(dict(flask.session))
+        flask.session['t'] = (1, 2, 3)
+        flask.session['b'] = b'\xff'
+        flask.session['m'] = flask.Markup('<html>')
+        flask.session['u'] = the_uuid
+        flask.session['d'] = now
+        flask.session['t_tag'] = {' t': 'not-a-tuple'}
+        flask.session['di_t_tag'] = {' t__': 'not-a-tuple'}
+        flask.session['di_tag'] = {' di': 'not-a-dict'}
+        return '', 204

+    with client:
        client.get('/')
-    rv = pickle.loads(client.get('/').data)
-    assert rv['m'] == flask.Markup('Hello!')
-    assert type(rv['m']) == flask.Markup
-    assert rv['dt'] == now
-    assert rv['u'] == the_uuid
-    assert rv['b'] == b'\xff'
-    assert type(rv['b']) == bytes
-    assert rv['t'] == (1, 2, 3)
-    assert rv['spacefirst'] == {' t': 'not-a-tuple'}
-    assert rv['withunderscores'] == {' t__': 'not-a-tuple'}
-    assert rv['notadict'] == {' di': 'not-a-dict'}
+        s = flask.session
+        assert s['t'] == (1, 2, 3)
+        assert type(s['b']) == bytes
+        assert s['b'] == b'\xff'
+        assert type(s['m']) == flask.Markup
+        assert s['m'] == flask.Markup('<html>')
+        assert s['u'] == the_uuid
+        assert s['d'] == now
+        assert s['t_tag'] == {' t': 'not-a-tuple'}
+        assert s['di_t_tag'] == {' t__': 'not-a-tuple'}
+        assert s['di_tag'] == {' di': 'not-a-dict'}


 def test_session_cookie_setting(app):
--- a/tests/test_json_tag.py
+++ b/tests/test_json_tag.py
@ -0,0 +1,65 @@
+from datetime import datetime
+from uuid import uuid4
+
+import pytest
+
+from flask import Markup
+from flask.json.tag import TaggedJSONSerializer, JSONTag
+
+
+@pytest.mark.parametrize("data", (
+    {' t': (1, 2, 3)},
+    {' t__': b'a'},
+    {' di': ' di'},
+    {'x': (1, 2, 3), 'y': 4},
+    (1, 2, 3),
+    [(1, 2, 3)],
+    b'\xff',
+    Markup('<html>'),
+    uuid4(),
+    datetime.utcnow().replace(microsecond=0),
+))
+def test_dump_load_unchanged(data):
+    s = TaggedJSONSerializer()
+    assert s.loads(s.dumps(data)) == data
+
+
+def test_duplicate_tag():
+    class TagDict(JSONTag):
+        key = ' d'
+
+    s = TaggedJSONSerializer()
+    pytest.raises(KeyError, s.register, TagDict)
+    s.register(TagDict, force=True, index=0)
+    assert isinstance(s.tags[' d'], TagDict)
+    assert isinstance(s.order[0], TagDict)
+
+
+def test_custom_tag():
+    class Foo(object):
+        def __init__(self, data):
+            self.data = data
+
+    class TagFoo(JSONTag):
+        __slots__ = ()
+        key = ' f'
+
+        def check(self, value):
+            return isinstance(value, Foo)
+
+        def to_json(self, value):
+            return self.serializer.tag(value.data)
+
+        def to_python(self, value):
+            return Foo(value)
+
+    s = TaggedJSONSerializer()
+    s.register(TagFoo)
+    assert s.loads(s.dumps(Foo('bar'))).data == 'bar'
+
+
+def test_tag_interface():
+    t = JSONTag(None)
+    pytest.raises(NotImplementedError, t.check, None)
+    pytest.raises(NotImplementedError, t.to_json, None)
+    pytest.raises(NotImplementedError, t.to_python, None)