def test_output_of_failed_command(self):
with output_catcher() as (out, err):
command = Command("which " + self.INVALID_COMMAND, self.TEST_MSG)
command.run()
output = out.getvalue().strip()
self.assertEquals(self.TEST_MSG + " " + command.NOT_OK, output)
self.assertFalse(command.was_successful)
def test_output_of_valid_command(self):
with output_catcher() as (out, err):
command = Command("echo test", self.TEST_MSG)
command.run()
output = out.getvalue().strip()
self.assertEquals(self.TEST_MSG + " " + command.OK, output)
self.assertEquals("test", command.stdout)
self.assertTrue(command.was_successful)
def test_output_of_invalid_command(self):
msg = "Checking for invalid command."
command = Command(self.INVALID_COMMAND, msg)
command.run()
self.assertFalse(command.was_successful)
self.assertEqual(
Command.INVALID_COMMAND_ERROR_MSG.format(
command=self.INVALID_COMMAND), command.stderr)
self.assertEqual("", command.stdout)
def test_required_command_exits_on_failure(self):
with self.assertRaises(installer.InstallationFailedException):
Command(self.INVALID_COMMAND, "", exit_on_failure=True).run()
with self.assertRaises(installer.InstallationFailedException):
Command("which " + self.INVALID_COMMAND, "",
exit_on_failure=True).run()