Add git_pull rule

tests/rules/test_git_pull.py

@@ -0,0 +1,29 @@
+import pytest
+from thefuck.rules.git_pull import match, get_new_command
+from tests.utils import Command
+
+
+@pytest.fixture
+def stderr():
+    return '''There is no tracking information for the current branch.
+Please specify which branch you want to merge with.
+See git-pull(1) for details
+
+    git pull <remote> <branch>
+
+If you wish to set tracking information for this branch you can do so with:
+
+    git branch --set-upstream-to=<remote>/<branch> master
+
+'''
+
+
+def test_match(stderr):
+    assert match(Command('git pull', stderr=stderr), None)
+    assert not match(Command('git pull'), None)
+    assert not match(Command('ls', stderr=stderr), None)
+
+
+def test_get_new_command(stderr):
+    assert get_new_command(Command('git pull', stderr=stderr), None) \
+           == "git branch --set-upstream-to=origin/master master && git pull"