diff --git a/README.md b/README.md
index 84a4a886..c0570535 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,6 @@
 
 [![Github Actions](https://github.com/httprunner/httprunner/actions/workflows/unittest.yml/badge.svg)](https://github.com/httprunner/httprunner/actions)
 [![codecov](https://codecov.io/gh/httprunner/httprunner/branch/master/graph/badge.svg)](https://codecov.io/gh/httprunner/httprunner)
-[![Go Report Card](https://goreportcard.com/badge/github.com/httprunner/httprunner)](https://goreportcard.com/report/github.com/httprunner/httprunner)
 [![Go Reference](https://pkg.go.dev/badge/github.com/httprunner/httprunner.svg)](https://pkg.go.dev/github.com/httprunner/httprunner)
 [![downloads](https://pepy.tech/badge/httprunner)](https://pepy.tech/project/httprunner)
 [![pypi version](https://img.shields.io/pypi/v/httprunner.svg)](https://pypi.python.org/pypi/httprunner)
diff --git a/tests/data/.csv b/examples/data/.csv
similarity index 100%
rename from tests/data/.csv
rename to examples/data/.csv
diff --git a/tests/data/a-b.c/1.yml b/examples/data/a-b.c/1.yml
similarity index 100%
rename from tests/data/a-b.c/1.yml
rename to examples/data/a-b.c/1.yml
diff --git a/tests/data/a-b.c/2 3.yml b/examples/data/a-b.c/2 3.yml
similarity index 100%
rename from tests/data/a-b.c/2 3.yml
rename to examples/data/a-b.c/2 3.yml
diff --git a/tests/data/a-b.c/中文case.yml b/examples/data/a-b.c/中文case.yml
similarity index 100%
rename from tests/data/a-b.c/中文case.yml
rename to examples/data/a-b.c/中文case.yml
diff --git a/examples/data/a_b_c/T1_test.py b/examples/data/a_b_c/T1_test.py
new file mode 100644
index 00000000..db722b78
--- /dev/null
+++ b/examples/data/a_b_c/T1_test.py
@@ -0,0 +1,36 @@
+# NOTE: Generated By HttpRunner v4.0.0-alpha
+# FROM: a-b.c/1.yml
+
+
+from httprunner import HttpRunner, Config, Step, RunRequest, RunTestCase
+
+
+class TestCaseT1(HttpRunner):
+
+    config = (
+        Config("request methods testcase with functions")
+        .variables(**{"foo1": "config_bar1", "foo2": "config_bar2"})
+        .base_url("https://postman-echo.com")
+        .verify(False)
+    )
+
+    teststeps = [
+        Step(
+            RunRequest("get with params")
+            .with_variables(**{"foo1": "bar1", "sum_v": "${sum_two(1, 2)}"})
+            .get("/get")
+            .with_params(**{"foo1": "$foo1", "foo2": "$foo2", "sum_v": "$sum_v"})
+            .with_headers(**{"User-Agent": "HttpRunner/${get_httprunner_version()}"})
+            .extract()
+            .with_jmespath("body.args.foo2", "session_foo2")
+            .validate()
+            .assert_equal("status_code", 200)
+            .assert_equal("body.args.foo1", "bar1")
+            .assert_equal("body.args.sum_v", "3")
+            .assert_equal("body.args.foo2", "config_bar2")
+        ),
+    ]
+
+
+if __name__ == "__main__":
+    TestCaseT1().test_start()
diff --git a/examples/data/a_b_c/T2_3_test.py b/examples/data/a_b_c/T2_3_test.py
new file mode 100644
index 00000000..eec4401b
--- /dev/null
+++ b/examples/data/a_b_c/T2_3_test.py
@@ -0,0 +1,46 @@
+# NOTE: Generated By HttpRunner v4.0.0-alpha
+# FROM: a-b.c/2 3.yml
+
+
+import sys
+from pathlib import Path
+
+sys.path.insert(0, str(Path(__file__).parent.parent))
+
+
+from httprunner import HttpRunner, Config, Step, RunRequest, RunTestCase
+
+from a_b_c.T1_test import TestCaseT1 as T1
+
+
+class TestCaseT23(HttpRunner):
+
+    config = (
+        Config("reference testcase unittest for abnormal folder path")
+        .base_url("https://postman-echo.com")
+        .verify(False)
+    )
+
+    teststeps = [
+        Step(RunTestCase("request with functions").call(T1).export(*["session_foo2"])),
+        Step(
+            RunRequest("post form data")
+            .with_variables(**{"foo1": "bar12"})
+            .post("/post")
+            .with_headers(
+                **{
+                    "User-Agent": "HttpRunner/${get_httprunner_version()}",
+                    "Content-Type": "application/x-www-form-urlencoded",
+                }
+            )
+            .with_data("foo1=$foo1&foo2=$session_foo2")
+            .validate()
+            .assert_equal("status_code", 200)
+            .assert_equal("body.form.foo1", "bar12")
+            .assert_equal("body.form.foo2", "config_bar2")
+        ),
+    ]
+
+
+if __name__ == "__main__":
+    TestCaseT23().test_start()
diff --git a/examples/data/a_b_c/__init__.py b/examples/data/a_b_c/__init__.py
new file mode 100644
index 00000000..70cfba53
--- /dev/null
+++ b/examples/data/a_b_c/__init__.py
@@ -0,0 +1 @@
+# NOTICE: Generated By HttpRunner. DO NOT EDIT!
diff --git a/tests/data/debugtalk.py b/examples/data/debugtalk.py
similarity index 100%
rename from tests/data/debugtalk.py
rename to examples/data/debugtalk.py
diff --git a/tests/ext/har2case/data/demo-quickstart.har b/examples/data/har2case/demo-quickstart.har
similarity index 100%
rename from tests/ext/har2case/data/demo-quickstart.har
rename to examples/data/har2case/demo-quickstart.har
diff --git a/tests/ext/har2case/data/demo.har b/examples/data/har2case/demo.har
similarity index 100%
rename from tests/ext/har2case/data/demo.har
rename to examples/data/har2case/demo.har
diff --git a/tests/ext/har2case/data/profile.yml b/examples/data/har2case/profile.yml
similarity index 100%
rename from tests/ext/har2case/data/profile.yml
rename to examples/data/har2case/profile.yml
diff --git a/examples/postman_echo/request_methods/demo_testsuite_yml/request_with_functions_test.py b/examples/postman_echo/request_methods/demo_testsuite_yml/request_with_functions_test.py
index 9836c8fb..91682f56 100644
--- a/examples/postman_echo/request_methods/demo_testsuite_yml/request_with_functions_test.py
+++ b/examples/postman_echo/request_methods/demo_testsuite_yml/request_with_functions_test.py
@@ -1,4 +1,4 @@
-# NOTE: Generated By HttpRunner v3.1.7
+# NOTE: Generated By HttpRunner v4.0.0-alpha
 # FROM: request_methods/request_with_functions.yml
 
 
diff --git a/examples/postman_echo/request_methods/demo_testsuite_yml/request_with_testcase_reference_test.py b/examples/postman_echo/request_methods/demo_testsuite_yml/request_with_testcase_reference_test.py
index f2b82850..ab052c17 100644
--- a/examples/postman_echo/request_methods/demo_testsuite_yml/request_with_testcase_reference_test.py
+++ b/examples/postman_echo/request_methods/demo_testsuite_yml/request_with_testcase_reference_test.py
@@ -1,4 +1,4 @@
-# NOTE: Generated By HttpRunner v3.1.7
+# NOTE: Generated By HttpRunner v4.0.0-alpha
 # FROM: request_methods/request_with_testcase_reference.yml
 
 
diff --git a/examples/postman_echo/request_methods/hardcode_test.py b/examples/postman_echo/request_methods/hardcode_test.py
index 4cb70976..ba492426 100644
--- a/examples/postman_echo/request_methods/hardcode_test.py
+++ b/examples/postman_echo/request_methods/hardcode_test.py
@@ -1,4 +1,4 @@
-# NOTE: Generated By HttpRunner v3.1.7
+# NOTE: Generated By HttpRunner v4.0.0-alpha
 # FROM: request_methods/hardcode.yml
 
 
diff --git a/examples/postman_echo/request_methods/request_with_functions_test.py b/examples/postman_echo/request_methods/request_with_functions_test.py
index 47f848fc..3c23b94c 100644
--- a/examples/postman_echo/request_methods/request_with_functions_test.py
+++ b/examples/postman_echo/request_methods/request_with_functions_test.py
@@ -1,4 +1,4 @@
-# NOTE: Generated By HttpRunner v3.1.7
+# NOTE: Generated By HttpRunner v4.0.0-alpha
 # FROM: request_methods/request_with_functions.yml
 
 
diff --git a/examples/postman_echo/request_methods/request_with_parameters_test.py b/examples/postman_echo/request_methods/request_with_parameters_test.py
index 659ccc2a..5a538af5 100644
--- a/examples/postman_echo/request_methods/request_with_parameters_test.py
+++ b/examples/postman_echo/request_methods/request_with_parameters_test.py
@@ -1,4 +1,4 @@
-# NOTE: Generated By HttpRunner v3.1.7
+# NOTE: Generated By HttpRunner v4.0.0-alpha
 # FROM: request_methods/request_with_parameters.yml
 
 
diff --git a/examples/postman_echo/request_methods/request_with_testcase_reference_test.py b/examples/postman_echo/request_methods/request_with_testcase_reference_test.py
index 34ffd60c..71305153 100644
--- a/examples/postman_echo/request_methods/request_with_testcase_reference_test.py
+++ b/examples/postman_echo/request_methods/request_with_testcase_reference_test.py
@@ -1,4 +1,4 @@
-# NOTE: Generated By HttpRunner v3.1.7
+# NOTE: Generated By HttpRunner v4.0.0-alpha
 # FROM: request_methods/request_with_testcase_reference.yml
 
 
diff --git a/examples/postman_echo/request_methods/request_with_variables_test.py b/examples/postman_echo/request_methods/request_with_variables_test.py
index 39d25113..61d9382b 100644
--- a/examples/postman_echo/request_methods/request_with_variables_test.py
+++ b/examples/postman_echo/request_methods/request_with_variables_test.py
@@ -1,4 +1,4 @@
-# NOTE: Generated By HttpRunner v3.1.7
+# NOTE: Generated By HttpRunner v4.0.0-alpha
 # FROM: request_methods/request_with_variables.yml
 
 
diff --git a/examples/postman_echo/request_methods/validate_with_functions_test.py b/examples/postman_echo/request_methods/validate_with_functions_test.py
index f4cb8a28..d2f58894 100644
--- a/examples/postman_echo/request_methods/validate_with_functions_test.py
+++ b/examples/postman_echo/request_methods/validate_with_functions_test.py
@@ -1,4 +1,4 @@
-# NOTE: Generated By HttpRunner v3.1.7
+# NOTE: Generated By HttpRunner v4.0.0-alpha
 # FROM: request_methods/validate_with_functions.yml
 
 
diff --git a/examples/postman_echo/request_methods/validate_with_variables_test.py b/examples/postman_echo/request_methods/validate_with_variables_test.py
index 3cc7953f..eaa20726 100644
--- a/examples/postman_echo/request_methods/validate_with_variables_test.py
+++ b/examples/postman_echo/request_methods/validate_with_variables_test.py
@@ -1,4 +1,4 @@
-# NOTE: Generated By HttpRunner v3.1.7
+# NOTE: Generated By HttpRunner v4.0.0-alpha
 # FROM: request_methods/validate_with_variables.yml
 
 
diff --git a/tests/app/debug_test.py b/httprunner/app/debug_test.py
similarity index 100%
rename from tests/app/debug_test.py
rename to httprunner/app/debug_test.py
diff --git a/tests/cli_test.py b/httprunner/cli_test.py
similarity index 100%
rename from tests/cli_test.py
rename to httprunner/cli_test.py
diff --git a/tests/compat_test.py b/httprunner/compat_test.py
similarity index 95%
rename from tests/compat_test.py
rename to httprunner/compat_test.py
index 987b1785..895ec962 100644
--- a/tests/compat_test.py
+++ b/httprunner/compat_test.py
@@ -11,25 +11,25 @@ class TestCompat(unittest.TestCase):
     def test_convert_variables(self):
         raw_variables = [{"var1": 1}, {"var2": "val2"}]
         self.assertEqual(
-            compat.convert_variables(raw_variables, "tests/data/a-b.c/1.yml"),
+            compat.convert_variables(raw_variables, "examples/data/a-b.c/1.yml"),
             {"var1": 1, "var2": "val2"},
         )
         raw_variables = {"var1": 1, "var2": "val2"}
         self.assertEqual(
-            compat.convert_variables(raw_variables, "tests/data/a-b.c/1.yml"),
+            compat.convert_variables(raw_variables, "examples/data/a-b.c/1.yml"),
             {"var1": 1, "var2": "val2"},
         )
         raw_variables = "${get_variables()}"
         self.assertEqual(
-            compat.convert_variables(raw_variables, "tests/data/a-b.c/1.yml"),
+            compat.convert_variables(raw_variables, "examples/data/a-b.c/1.yml"),
             {"foo1": "session_bar1"},
         )
 
         with self.assertRaises(exceptions.TestCaseFormatError):
             raw_variables = [{"var1": 1}, {"var2": "val2", "var3": 3}]
-            compat.convert_variables(raw_variables, "tests/data/a-b.c/1.yml")
+            compat.convert_variables(raw_variables, "examples/data/a-b.c/1.yml")
         with self.assertRaises(exceptions.TestCaseFormatError):
-            compat.convert_variables(None, "tests/data/a-b.c/1.yml")
+            compat.convert_variables(None, "examples/data/a-b.c/1.yml")
 
     def test_convert_jmespath(self):
 
diff --git a/tests/ext/har2case/core_test.py b/httprunner/ext/har2case/core_test.py
similarity index 93%
rename from tests/ext/har2case/core_test.py
rename to httprunner/ext/har2case/core_test.py
index 8d79e1db..0c39df1c 100644
--- a/tests/ext/har2case/core_test.py
+++ b/httprunner/ext/har2case/core_test.py
@@ -2,14 +2,15 @@ import os
 
 from httprunner.ext.har2case.core import HarParser
 from httprunner.ext.har2case.utils import load_har_log_entries
-from tests.ext.har2case.har_utils_test import TestHar2CaseUtils
+from httprunner.ext.har2case.utils_test import TestHar2CaseUtils
 
 
 class TestHar(TestHar2CaseUtils):
     def setUp(self):
-        self.har_path = os.path.join(os.path.dirname(__file__), "data", "demo.har")
+        self.data_dir = os.path.join(os.getcwd(), "examples", "data", "har2case")
+        self.har_path = os.path.join(self.data_dir, "demo.har")
         self.har_parser = HarParser(self.har_path)
-        self.profile_path = os.path.join(os.path.dirname(__file__), "data", "profile.yml")
+        self.profile_path = os.path.join(self.data_dir, "profile.yml")
 
     def test_prepare_teststep(self):
         log_entries = load_har_log_entries(self.har_path)
@@ -35,14 +36,14 @@ class TestHar(TestHar2CaseUtils):
         self.assertIn("validate", teststeps[0])
 
     def test_gen_testcase_yaml(self):
-        yaml_file = os.path.join(os.path.dirname(__file__), "data", "demo.yml")
+        yaml_file = os.path.join(self.data_dir, "demo.yml")
 
         self.har_parser.gen_testcase(file_type="YAML")
         self.assertTrue(os.path.isfile(yaml_file))
         os.remove(yaml_file)
 
     def test_gen_testcase_json(self):
-        json_file = os.path.join(os.path.dirname(__file__), "data", "demo.json")
+        json_file = os.path.join(self.data_dir, "demo.json")
 
         self.har_parser.gen_testcase(file_type="JSON")
         self.assertTrue(os.path.isfile(json_file))
@@ -169,7 +170,7 @@ class TestHar(TestHar2CaseUtils):
 
     def test_make_testcase(self):
         har_path = os.path.join(
-            os.path.dirname(__file__), "data", "demo-quickstart.har"
+            self.data_dir, "demo-quickstart.har"
         )
         har_parser = HarParser(har_path)
         testcase = har_parser._make_testcase()
diff --git a/tests/ext/har2case/har_utils_test.py b/httprunner/ext/har2case/utils_test.py
similarity index 90%
rename from tests/ext/har2case/har_utils_test.py
rename to httprunner/ext/har2case/utils_test.py
index 658ec3ae..6c414adc 100644
--- a/tests/ext/har2case/har_utils_test.py
+++ b/httprunner/ext/har2case/utils_test.py
@@ -6,10 +6,13 @@ from httprunner.ext.har2case import utils
 
 
 class TestHar2CaseUtils(unittest.TestCase):
+
+    data_dir = os.path.join(os.getcwd(), "examples", "data", "har2case")
+
     @staticmethod
     def create_har_file(file_name, content):
         file_path = os.path.join(
-            os.path.dirname(__file__), "data", "{}.har".format(file_name)
+            TestHar2CaseUtils.data_dir, "{}.har".format(file_name)
         )
         with open(file_path, "w") as f:
             f.write(json.dumps(content))
@@ -17,7 +20,7 @@ class TestHar2CaseUtils(unittest.TestCase):
         return file_path
 
     def test_load_har_log_entries(self):
-        har_path = os.path.join(os.path.dirname(__file__), "data", "demo.har")
+        har_path = os.path.join(TestHar2CaseUtils.data_dir, "demo.har")
         log_entries = utils.load_har_log_entries(har_path)
         self.assertIsInstance(log_entries, list)
         self.assertIn("request", log_entries[0])
diff --git a/tests/loader_test.py b/httprunner/loader_test.py
similarity index 98%
rename from tests/loader_test.py
rename to httprunner/loader_test.py
index 9f9210e8..95449f43 100644
--- a/tests/loader_test.py
+++ b/httprunner/loader_test.py
@@ -41,7 +41,7 @@ class TestLoader(unittest.TestCase):
         os.remove(json_tmp_file)
 
     def test_load_testcases_bad_filepath(self):
-        testcase_file_path = os.path.join(os.getcwd(), "tests/data/demo")
+        testcase_file_path = os.path.join(os.getcwd(), "examples/data/demo")
         with self.assertRaises(exceptions.FileNotFound):
             loader.load_testcase_file(testcase_file_path)
 
diff --git a/tests/make_test.py b/httprunner/make_test.py
similarity index 92%
rename from tests/make_test.py
rename to httprunner/make_test.py
index 339910ce..b6a40f20 100644
--- a/tests/make_test.py
+++ b/httprunner/make_test.py
@@ -18,6 +18,7 @@ class TestMake(unittest.TestCase):
         pytest_files_made_cache_mapping.clear()
         pytest_files_run_set.clear()
         loader.project_meta = None
+        self.data_dir = os.path.join(os.getcwd(), "examples", "data")
 
     def test_make_testcase(self):
         path = ["examples/postman_echo/request_methods/request_with_variables.yml"]
@@ -94,9 +95,9 @@ from request_methods.request_with_functions_test import (
     def test_ensure_file_path_valid(self):
         self.assertEqual(
             ensure_file_abs_path_valid(
-                os.path.join(os.getcwd(), "tests", "data", "a-b.c", "2 3.yml")
+                os.path.join(self.data_dir, "a-b.c", "2 3.yml")
             ),
-            os.path.join(os.getcwd(), "tests", "data", "a_b_c", "T2_3.yml"),
+            os.path.join(self.data_dir, "a_b_c", "T2_3.yml"),
         )
         loader.project_meta = None
         self.assertEqual(
@@ -117,30 +118,27 @@ from request_methods.request_with_functions_test import (
         loader.project_meta = None
         self.assertEqual(
             ensure_file_abs_path_valid(
-                os.path.join(os.getcwd(), "tests", "data", ".csv")
+                os.path.join(self.data_dir, ".csv")
             ),
-            os.path.join(os.getcwd(), "tests", "data", ".csv"),
+            os.path.join(self.data_dir, ".csv"),
         )
 
     def test_convert_testcase_path(self):
         self.assertEqual(
             convert_testcase_path(
-                os.path.join(os.getcwd(), "tests", "data", "a-b.c", "2 3.yml")
+                os.path.join(self.data_dir, "a-b.c", "2 3.yml")
             ),
             (
-                os.path.join(os.getcwd(), "tests", "data", "a_b_c", "T2_3_test.py"),
+                os.path.join(self.data_dir, "a_b_c", "T2_3_test.py"),
                 "T23",
             ),
         )
         self.assertEqual(
             convert_testcase_path(
-                os.path.join(os.getcwd(), "tests", "data", "a-b.c", "中文case.yml")
+                os.path.join(self.data_dir, "a-b.c", "中文case.yml")
             ),
             (
-                os.path.join(
-                    os.getcwd(),
-                    os.path.join("tests", "data", "a_b_c", "中文case_test.py"),
-                ),
+                os.path.join(self.data_dir, "a_b_c", "中文case_test.py"),
                 "中文Case",
             ),
         )
diff --git a/tests/parser_test.py b/httprunner/parser_test.py
similarity index 100%
rename from tests/parser_test.py
rename to httprunner/parser_test.py
diff --git a/tests/response_test.py b/httprunner/response_test.py
similarity index 100%
rename from tests/response_test.py
rename to httprunner/response_test.py
diff --git a/tests/runner_test.py b/httprunner/runner_test.py
similarity index 78%
rename from tests/runner_test.py
rename to httprunner/runner_test.py
index 96654d3b..ef59dcdf 100644
--- a/tests/runner_test.py
+++ b/httprunner/runner_test.py
@@ -32,9 +32,9 @@ class TestHttpRunner(unittest.TestCase):
         self.assertEqual(len(result.step_datas), 2)
 
     def test_run_testcase_with_abnormal_path(self):
-        exit_code = main_run(["tests/data/a-b.c/2 3.yml"])
+        exit_code = main_run(["examples/data/a-b.c/2 3.yml"])
         self.assertEqual(exit_code, 0)
-        self.assertTrue(os.path.exists("tests/data/a_b_c/__init__.py"))
-        self.assertTrue(os.path.exists("tests/data/debugtalk.py"))
-        self.assertTrue(os.path.exists("tests/data/a_b_c/T1_test.py"))
-        self.assertTrue(os.path.exists("tests/data/a_b_c/T2_3_test.py"))
+        self.assertTrue(os.path.exists("examples/data/a_b_c/__init__.py"))
+        self.assertTrue(os.path.exists("examples/data/debugtalk.py"))
+        self.assertTrue(os.path.exists("examples/data/a_b_c/T1_test.py"))
+        self.assertTrue(os.path.exists("examples/data/a_b_c/T2_3_test.py"))
diff --git a/tests/scaffold_test.py b/httprunner/scaffold_test.py
similarity index 100%
rename from tests/scaffold_test.py
rename to httprunner/scaffold_test.py
diff --git a/tests/utils_test.py b/httprunner/utils_test.py
similarity index 100%
rename from tests/utils_test.py
rename to httprunner/utils_test.py
diff --git a/pyproject.toml b/pyproject.toml
index c52e6d89..2f5614e5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -3,14 +3,14 @@ name = "httprunner"
 version = "4.0.0-alpha"
 description = "One-stop solution for HTTP(S) testing."
 license = "Apache-2.0"
-readme = "docs/README.md"
+readme = "README.md"
 authors = ["debugtalk <debugtalk@gmail.com>"]
 
 homepage = "https://github.com/httprunner/httprunner"
 repository = "https://github.com/httprunner/httprunner"
-documentation = "https://docs.httprunner.org"
+documentation = "https://httprunner.com/docs"
 
-keywords = ["HTTP", "api", "test", "requests", "locustio"]
+keywords = ["HTTP", "apitest", "perftest", "DEM", "requests", "locustio"]
 
 classifiers = [
     "Development Status :: 5 - Production/Stable",
diff --git a/tests/__init__.py b/tests/__init__.py
deleted file mode 100644
index e69de29b..00000000
diff --git a/tests/app/__init__.py b/tests/app/__init__.py
deleted file mode 100644
index e69de29b..00000000
diff --git a/tests/ext/__init__.py b/tests/ext/__init__.py
deleted file mode 100644
index e69de29b..00000000
diff --git a/tests/ext/har2case/__init__.py b/tests/ext/har2case/__init__.py
deleted file mode 100644
index e69de29b..00000000