Enable strict coverage for step module

recipe_engine/unittests/run_test.py

 #!/usr/bin/env python
 # Copyright 2014 The LUCI Authors. All rights reserved.
 # Use of this source code is governed under the Apache License, Version 2.0
 # that can be found in the LICENSE file.
 
 import json
 import os
 import re
 import subprocess
 import unittest
@@ skipping 92 matching lines @@
 
       self.assertRegexpMatches(stdout, '(?m)^@@@STEP_EXCEPTION@@@$')
       self.assertRegexpMatches(stdout, 'OSError')
       self.assertEqual(1, subp.returncode, stdout)
     finally:
       if os.path.exists(path):
         os.unlink(path)
 
   def test_trigger(self):
     subp = subprocess.Popen(
-        self._run_cmd('engine_tests/trigger'),
+        self._run_cmd('step:tests/trigger'),
         stdout=subprocess.PIPE)
     stdout, _ = subp.communicate()
     self.assertEqual(0, subp.returncode)
     m = re.compile(r'^@@@STEP_TRIGGER@(.*)@@@$', re.MULTILINE).search(stdout)
     self.assertTrue(m)
     blob = m.group(1)
     json.loads(blob) # Raises an exception if the blob is not valid json.
 
   def test_trigger_no_such_command(self):
     """Tests that trigger still happens even if running the command fails."""
     subp = subprocess.Popen(
         self._run_cmd(
-            'engine_tests/trigger', properties={'command': ['na-huh']}),
+            'step:tests/trigger', properties={'command': ['na-huh']}),
         stdout=subprocess.PIPE)
     stdout, _ = subp.communicate()
     self.assertRegexpMatches(stdout, r'(?m)^@@@STEP_TRIGGER@(.*)@@@$')
     self.assertEqual(255, subp.returncode)
 
   def test_trigger_no_such_command_new(self):
     """Tests that trigger still happens even if running the command fails."""
     _, path = tempfile.mkstemp('args_pb')
     with open(path, 'w') as f:
       json.dump({
         'engine_flags': {
             'use_result_proto': True
         }
       }, f)
 
     try:
       subp = subprocess.Popen(
           self._run_cmd(
-              'engine_tests/trigger', properties={'command': ['na-huh']},
+              'step:tests/trigger', properties={'command': ['na-huh']},
               engine_args=['--operational-args-path', path]),
           stdout=subprocess.PIPE)
       stdout, _ = subp.communicate()
 
       self.assertRegexpMatches(stdout, r'(?m)^@@@STEP_TRIGGER@(.*)@@@$')
       self.assertEqual(1, subp.returncode)
     finally:
       if os.path.exists(path):
         os.unlink(path)
 
@@ skipping 25 matching lines @@
           'bash', '-c', '/bin/echo %s' % quoted])
       self.assertEqual(bash_output.decode('utf-8'), s + '\n')
 
       # zsh is untested because zsh isn't provisioned on our bots. (luqui)
       # zsh_output = subprocess.check_output([
       #     'zsh', '-c', '/bin/echo %s' % quoted])
       # self.assertEqual(zsh_output.decode('utf-8'), s + '\n')
 
   def test_subannotations(self):
     proc = subprocess.Popen(
-        self._run_cmd('engine_tests/subannotations'),
+        self._run_cmd('step:tests/subannotations'),
         stdout=subprocess.PIPE,
         stderr=subprocess.PIPE)
     stdout, _ = proc.communicate()
     self.assertRegexpMatches(stdout, r'(?m)^!@@@BUILD_STEP@steppy@@@$')
     self.assertRegexpMatches(stdout, r'(?m)^@@@BUILD_STEP@pippy@@@$')
     # Before 'Subannotate me' we expect an extra STEP_CURSOR to reset the
     # state.
     self.assertRegexpMatches(stdout,
         r'(?m)^@@@STEP_CURSOR@Subannotate me@@@\n@@@STEP_CLOSED@@@$')
 
 
 if __name__ == '__main__':
   unittest.TestCase.maxDiff = None
   unittest.main()