feat: make locusts as httprunner plugin

tests/test_plugins/test_locusts.py

@@ -0,0 +1,19 @@
+import os
+import unittest
+
+from httprunner.plugins.locusts import prepare_locust_tests
+
+
+class TestLocust(unittest.TestCase):
+
+    def test_prepare_locust_tests(self):
+        path = os.path.join(
+            os.getcwd(), 'tests/locust_tests/demo_locusts.yml')
+        locust_tests = prepare_locust_tests(path)
+        self.assertEqual(len(locust_tests), 2 + 3)
+        name_list = [
+            "create user 1000 and check result.",
+            "create user 1001 and check result."
+        ]
+        self.assertIn(locust_tests[0]["config"]["name"], name_list)
+        self.assertIn(locust_tests[4]["config"]["name"], name_list)