test(rules): test other rules involving shells.and_()

Signed-off-by: Pablo Santiago Blum de Aguiar <scorphus@gmail.com>

tests/rules/test_git_add.py

@@ -0,0 +1,39 @@
+import pytest
+from thefuck.rules.git_add import match, get_new_command
+from tests.utils import Command
+
+
+@pytest.fixture
+def did_not_match(target, did_you_forget=True):
+    error = ("error: pathspec '{}' did not match any "
+             "file(s) known to git.".format(target))
+    if did_you_forget:
+        error = ("{}\nDid you forget to 'git add'?'".format(error))
+    return error
+
+
+@pytest.mark.parametrize('command', [
+    Command(script='git submodule update unknown',
+            stderr=did_not_match('unknown')),
+    Command(script='git commit unknown',
+            stderr=did_not_match('unknown'))])  # Older versions of Git
+def test_match(command):
+    assert match(command, None)
+
+
+@pytest.mark.parametrize('command', [
+    Command(script='git submodule update known', stderr=('')),
+    Command(script='git commit known', stderr=('')),
+    Command(script='git commit unknown',  # Newer versions of Git
+            stderr=did_not_match('unknown', False))])
+def test_not_match(command):
+    assert not match(command, None)
+
+
+@pytest.mark.parametrize('command, new_command', [
+    (Command('git submodule update unknown', stderr=did_not_match('unknown')),
+     'git add -- unknown && git submodule update unknown'),
+    (Command('git commit unknown', stderr=did_not_match('unknown')),  # Old Git
+     'git add -- unknown && git commit unknown')])
+def test_get_new_command(command, new_command):
+    assert get_new_command(command, None) == new_command