1 files changed, 62 insertions, 0 deletions
diff --git a/tests/test_help.py b/tests/test_help.py
new file mode 100644
index 000000000..1fbe196c8
--- /dev/null
+++ b/tests/test_help.py
@@ -0,0 +1,62 @@
+from pip.exceptions import CommandError
+from pip.commands.help import (HelpCommand,
+                               SUCCESS,
+                               ERROR,)
+from mock import Mock
+from nose.tools import assert_raises
+from tests.test_pip import run_pip, reset_env
+
+
+def test_run_method_should_return_sucess_when_finds_command_name():
+    """
+    Test HelpCommand.run for existing command
+    """
+    options_mock = Mock()
+    args = ('freeze',)
+    help_cmd = HelpCommand()
+    status = help_cmd.run(options_mock, args)
+    assert status == SUCCESS
+
+def test_run_method_should_return_sucess_when_command_name_not_specified():
+    """
+    Test HelpCommand.run when there are no args
+    """
+    options_mock = Mock()
+    args = ()
+    help_cmd = HelpCommand()
+    status = help_cmd.run(options_mock, args)
+    assert status == SUCCESS
+
+def test_run_method_should_raise_command_error_when_command_does_not_exist():
+    """
+    Test HelpCommand.run for non-existing command
+    """
+    options_mock = Mock()
+    args = ('mycommand',)
+    help_cmd = HelpCommand()
+    assert_raises(CommandError, help_cmd.run, options_mock, args)
+
+def test_help_command_should_exit_status_ok_when_command_exists():
+    """
+    Test `help` command for existing command
+    """
+    reset_env()
+    result = run_pip('help', 'freeze')
+    assert result.returncode == SUCCESS
+
+def test_help_command_should_exit_status_ok_when_no_command_is_specified():
+    """
+    Test `help` command for no command
+    """
+    reset_env()
+    result = run_pip('help')
+    assert result.returncode == SUCCESS
+
+def test_help_command_should_exit_status_error_when_command_does_not_exist():
+    """
+    Test `help` command for non-existing command
+    """
+    reset_env()
+    result = run_pip('help', 'mycommand', expect_error=True)
+    assert result.returncode == ERROR
+