Add first 3 tests for browser.cache

Note: test_cache_deactivated_private_browsing is currently failing

tests/unit/browser/test_cache.py

@@ -0,0 +1,55 @@
+# vim: ft=python fileencoding=utf-8 sts=4 sw=4 et:
+
+# Copyright 2015 lamarpavel
+#
+# This file is part of qutebrowser.
+#
+# qutebrowser is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# qutebrowser is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with qutebrowser.  If not, see <http://www.gnu.org/licenses/>.
+
+"""Tests for qutebrowser.browser.cache"""
+
+from unittest import mock
+
+from qutebrowser.browser import cache
+from qutebrowser.utils import objreg
+
+
+def test_cache_size_leq_max_cache_size(config_stub):
+    """Test cacheSize <= MaximumCacheSize when cache is activated."""
+    config_stub.data = {
+            'storage': {'cache-size': 1024},
+            'general': {'private-browsing': False}
+            }
+    disk_cache = cache.DiskCache("/foo/bar")
+    assert(1024 >= disk_cache.cacheSize())
+
+
+def test_cache_deactivated_private_browsing(config_stub):
+    """Test if cache is deactivated in private-browsing mode."""
+    config_stub.data = {
+            'storage': {'cache-size': 1024},
+            'general': {'private-browsing': True}
+            }
+    disk_cache = cache.DiskCache("/foo/bar")
+    assert(0 == disk_cache.cacheSize())
+
+
+def test_cache_deactivated_no_cachedir(config_stub):
+    """Test if cache is deactivated when there is no cache-dir."""
+    config_stub.data = {
+            'storage': {'cache-size': 1024},
+            'general': {'private-browsing': False}
+            }
+    disk_cache = cache.DiskCache("")
+    assert(0 == disk_cache.cacheSize())