Added a rule to match az binary sub-command misses (#834)

tests/rules/test_az_cli.py

@@ -0,0 +1,44 @@
+import pytest
+
+from thefuck.rules.az_cli import match, get_new_command
+from thefuck.types import Command
+
+
+no_suggestions = '''\
+az provider: error: the following arguments are required: _subcommand
+usage: az provider [-h] {list,show,register,unregister,operation} ...
+'''
+
+
+misspelled_command = '''\
+az: 'providers' is not in the 'az' command group. See 'az --help'.
+
+The most similar choice to 'providers' is:
+    provider
+'''
+
+misspelled_subcommand = '''\
+az provider: 'lis' is not in the 'az provider' command group. See 'az provider --help'.
+
+The most similar choice to 'lis' is:
+    list
+'''
+
+
+@pytest.mark.parametrize('command', [
+    Command('az providers', misspelled_command),
+    Command('az provider lis', misspelled_subcommand)])
+def test_match(command):
+    assert match(command)
+
+
+def test_not_match():
+    assert not match(Command('az provider', no_suggestions))
+
+
+@pytest.mark.parametrize('command, result', [
+    (Command('az providers list', misspelled_command), ['az provider list']),
+    (Command('az provider lis', misspelled_subcommand), ['az provider list'])
+])
+def test_get_new_command(command, result):
+    assert get_new_command(command) == result