bot lib tests: Move tests of bot library to tests/.

This makes it clearer which files are for writing bot tests
vs tests of the infrastructure.

tools/run-mypy

@@ -28,7 +28,7 @@ exclude = [
     # Excluded out of laziness:
     "zulip_bots/zulip_bots/terminal.py",
     "zulip_bots/zulip_bots/simple_lib.py",
-    "zulip_bots/zulip_bots/lib_tests.py",
+    "zulip_bots/zulip_bots/tests/test_lib.py",
     "tools",
 ]
 

tools/test-lib

@@ -31,8 +31,8 @@ def run_all():
             cov.load()
         cov.start()
 
-    module = import_module('zulip_bots.lib_tests')
-    suite = unittest.defaultTestLoader.loadTestsFromModule(module)
+    module = 'zulip_bots/zulip_bots/tests/'
+    suite = unittest.defaultTestLoader.discover(module)
 
     suite = unittest.TestSuite([suite])
     runner = unittest.TextTestRunner(verbosity=2)

zulip_bots/zulip_bots/tests/test_run.py

@@ -14,7 +14,7 @@ from unittest.mock import patch
 class TestDefaultArguments(TestCase):
 
     our_dir = os.path.dirname(__file__)
-    path_to_bot = os.path.abspath(os.path.join(our_dir, 'bots/giphy/giphy.py'))
+    path_to_bot = os.path.abspath(os.path.join(our_dir, '../bots/giphy/giphy.py'))
 
     @patch('sys.argv', ['zulip-run-bot', 'giphy', '--config-file', '/foo/bar/baz.conf'])
     @patch('zulip_bots.run.run_message_handler_for_bot')