fix: Unescaped quotes in generated Python code samples on some schemas

Ref: #1030

docs/changelog.rst

@@ -14,6 +14,7 @@ Changelog
 
 - Pass ``data_generation_method`` to ``Case`` for GraphQL schemas.
 - Generation of invalid headers in some cases. `#1142`_
+- Unescaped quotes in generated Python code samples on some schemas. `#1030`_
 
 **Performance**
 
@@ -2209,6 +2210,7 @@ Deprecated
 .. _#1039: https://github.com/schemathesis/schemathesis/issues/1039
 .. _#1036: https://github.com/schemathesis/schemathesis/issues/1036
 .. _#1033: https://github.com/schemathesis/schemathesis/issues/1033
+.. _#1030: https://github.com/schemathesis/schemathesis/issues/1030
 .. _#1028: https://github.com/schemathesis/schemathesis/issues/1028
 .. _#1022: https://github.com/schemathesis/schemathesis/issues/1022
 .. _#1020: https://github.com/schemathesis/schemathesis/issues/1020

src/schemathesis/models.py

@@ -220,7 +220,8 @@ def should_display(key: str, value: Any) -> bool:
         printed_kwargs = ", ".join(
             f"{key}={repr(value)}" for key, value in kwargs.items() if should_display(key, value)
         )
-        args_repr = f"'{kwargs['url']}'"
+        url = kwargs["url"].replace("'", "\\'")
+        args_repr = f"'{url}'"
         if printed_kwargs:
             args_repr += f", {printed_kwargs}"
         return f"requests.{method}({args_repr})"

test/code_samples/test_python.py

@@ -2,7 +2,9 @@
 import pytest
 import requests
 from flask import Flask
+from hypothesis import HealthCheck, given, settings
 
+import schemathesis
 from schemathesis.constants import USER_AGENT
 from schemathesis.runner import from_schema
 
@@ -61,6 +63,32 @@ def test_code_sample_from_request(openapi_case):
     assert openapi_case.get_code_to_reproduce(request=request) == f"requests.get('{url}')"
 
 
+@pytest.mark.hypothesis_nested
+def test_get_code_sample_code_validity(empty_open_api_2_schema):
+    # See GH-1030
+    # When the input schema is too loose
+    empty_open_api_2_schema["paths"] = {
+        "/test/{key}": {
+            "post": {
+                "parameters": [{"name": "key", "in": "path"}],
+                "responses": {"default": {"description": "OK"}},
+            }
+        }
+    }
+    schema = schemathesis.from_dict(empty_open_api_2_schema, base_url="http://127.0.0.1:1", validate_schema=False)
+    strategy = schema["/test/{key}"]["POST"].as_strategy()
+
+    @given(case=strategy)
+    @settings(max_examples=30, suppress_health_check=[HealthCheck.too_slow, HealthCheck.filter_too_much], deadline=None)
+    def test(case):
+        code = case.get_code_to_reproduce()
+        # Then generated code should always be syntactically valid
+        with pytest.raises(requests.exceptions.ConnectionError):
+            eval(code)
+
+    test()
+
+
 @pytest.mark.filterwarnings("ignore:.*method is good for exploring strategies.*")
 def test_graphql_code_sample(graphql_url, graphql_schema, graphql_strategy):
     case = graphql_strategy.example()