Add tests for CommandLineEdit

tests/misc/test_miscwidgets.py

@@ -0,0 +1,98 @@
+# vim: ft=python fileencoding=utf-8 sts=4 sw=4 et:
+
+# Copyright 2014-2015 Florian Bruhin (The Compiler) <mail@qutebrowser.org>
+#
+# 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/>.
+
+"""Test widgets in miscwidgets module."""
+from unittest import mock
+from PyQt5.QtCore import Qt
+from PyQt5.QtWidgets import QApplication
+import pytest
+
+from qutebrowser.misc import lineparser
+from qutebrowser.misc.miscwidgets import CommandLineEdit
+from qutebrowser.utils import objreg
+
+
+class TestCommandLineEdit:
+    """Tests for CommandLineEdit widget."""
+
+    @pytest.yield_fixture
+    def cmd_edit(self, qtbot):
+        """
+        Fixture to initialize a CommandLineEdit and its dependencies,
+        cleaning up afterwards.
+        """
+        command_history = lineparser.LimitLineParser('', '', limit=None)
+        objreg.register('command-history', command_history)
+        cmd_edit = CommandLineEdit(None)
+        cmd_edit.set_prompt(':')
+        qtbot.add_widget(cmd_edit)
+        assert cmd_edit.text() == ''
+
+        yield cmd_edit
+
+        objreg.delete('command-history')
+
+    @pytest.yield_fixture
+    def mock_clipboard(self):
+        """
+        Fixture installs a MagicMock into QApplication.clipboard() and
+        returns it.
+        """
+        with mock.patch.object(QApplication, 'clipboard'):
+            clipboard = mock.MagicMock()
+            clipboard.supportsSelection.return_value = True
+            QApplication.clipboard.return_value = clipboard
+            yield clipboard
+
+    def test_position(self, qtbot, cmd_edit):
+        """Test cursor position based on the prompt."""
+        qtbot.keyClicks(cmd_edit, ':hello')
+        assert cmd_edit.text() == ':hello'
+        assert cmd_edit.cursorPosition() == len(':hello')
+
+        cmd_edit.home(mark=True)
+        assert cmd_edit.cursorPosition() == len(':hello')
+        qtbot.keyClick(cmd_edit, Qt.Key_Delete)
+        assert cmd_edit.text() == ':'
+        qtbot.keyClick(cmd_edit, Qt.Key_Backspace)
+        assert cmd_edit.text() == ':'
+
+        qtbot.keyClicks(cmd_edit, 'hey again')
+        assert cmd_edit.text() == ':hey again'
+
+    def test_invalid_prompt(self, qtbot, cmd_edit):
+        """Test prevent invalid prompt to be entered."""
+        qtbot.keyClicks(cmd_edit, '$hello')
+        assert cmd_edit.text() == ''
+
+    def test_clipboard_paste(self, qtbot, cmd_edit, mock_clipboard):
+        """Test pasting commands from clipboard."""
+        mock_clipboard.text.return_value = ':command'
+        qtbot.keyClick(cmd_edit, Qt.Key_Insert, Qt.ShiftModifier)
+        assert cmd_edit.text() == ':command'
+
+        mock_clipboard.text.return_value = ' param1'
+        qtbot.keyClick(cmd_edit, Qt.Key_Insert, Qt.ShiftModifier)
+        assert cmd_edit.text() == ':command param1'
+
+        cmd_edit.clear()
+        mock_clipboard.text.return_value = '$ command'
+        qtbot.keyClick(cmd_edit, Qt.Key_Insert, Qt.ShiftModifier)
+        assert cmd_edit.text() == ':command param1'
+