Added mini blogging application as Flask example.

This should become the tutorial.

examples/flaskr/flaskr_tests.py

@@ -0,0 +1,64 @@
+# -*- coding: utf-8 -*-
+"""
+    Flaskr Tests
+    ~~~~~~~~~~~~
+
+    Tests the Flaskr application.
+
+    :copyright: (c) 2010 by Armin Ronacher.
+    :license: BSD, see LICENSE for more details.
+"""
+import flaskr
+import unittest
+import tempfile
+
+
+class FlaskrTestCase(unittest.TestCase):
+
+    def setUp(self):
+        """Before each test, set up a blank database"""
+        self.db = tempfile.NamedTemporaryFile()
+        self.app = flaskr.app.test_client()
+        flaskr.DATABASE = self.db.name
+        flaskr.init_db()
+
+    def login(self, username, password):
+        return self.app.post('/login', data=dict(
+            username=username,
+            password=password
+        ), follow_redirects=True)
+
+    def logout(self):
+        return self.app.get('/logout', follow_redirects=True)
+
+    # testing functions
+
+    def test_login_logout(self):
+        """Make sure login and logout works"""
+        rv = self.login(flaskr.USERNAME, flaskr.PASSWORD)
+        assert 'You were logged in' in rv.data
+        rv = self.logout()
+        assert 'You were logged out' in rv.data
+        rv = self.login(flaskr.USERNAME + 'x', flaskr.PASSWORD)
+        assert 'Invalid username' in rv.data
+        rv = self.login(flaskr.USERNAME, flaskr.PASSWORD + 'x')
+        assert 'Invalid password' in rv.data
+
+    def test_messages(self):
+        """Test that messages work"""
+        # start with a blank state
+        rv = self.app.get('/')
+        assert 'No entries here so far' in rv.data
+        self.login(flaskr.USERNAME, flaskr.PASSWORD)
+        rv = self.app.post('/add', data=dict(
+            title='<Hello>',
+            text='<strong>HTML</strong> allowed here'
+        ), follow_redirects=True)
+        assert 'No entries here so far' not in rv.data
+        self.login(flaskr.USERNAME, flaskr.PASSWORD)
+        assert '&lt;Hello&gt' in rv.data
+        assert '<strong>HTML</strong> allowed here' in rv.data
+
+
+if __name__ == '__main__':
+    unittest.main()