def test_managed_webpack_compiler_in_watch_mode_raises_when_not_built(self):
# NOTE: The 'Built at: ' message is never printed.
self.exit_stack.enter_context(self.swap_popen(outputs=[b'abc', b'def']))
str_io = python_utils.string_io()
self.exit_stack.enter_context(python_utils.redirect_stdout(str_io))
self.assertRaisesRegexp(
IOError, 'First build never completed',
lambda: self.exit_stack.enter_context(
servers.managed_webpack_compiler(watch_mode=True)))
self.assert_matches_regexps(str_io.getvalue().strip().split('\n'), [
'Starting new Webpack Compiler',
'abc',
'def',
'Stopping Webpack Compiler',
])
def test_managed_webpack_compiler_in_watch_mode_when_build_succeeds(self):
popen_calls = self.exit_stack.enter_context(self.swap_popen(
outputs=[b'abc', b'Built at: 123', b'def']))
str_io = python_utils.string_io()
self.exit_stack.enter_context(python_utils.redirect_stdout(str_io))
logs = self.exit_stack.enter_context(self.capture_logging())
proc = self.exit_stack.enter_context(servers.managed_webpack_compiler(
watch_mode=True))
self.exit_stack.close()
self.assert_proc_was_managed_as_expected(logs, proc.pid)
self.assertEqual(len(popen_calls), 1)
self.assertIn('--color', popen_calls[0].program_args)
self.assertIn('--watch', popen_calls[0].program_args)
self.assertIn('--progress', popen_calls[0].program_args)
self.assert_matches_regexps(str_io.getvalue().strip().split('\n'), [
'Starting new Webpack Compiler',
'abc',
'Built at: 123',
'def',
'Stopping Webpack Compiler',
])