feat: make messages if there's assert_no_errors more verbose (#4423)

Co-authored-by: sourcery-ai[bot] <58596630+sourcery-ai[bot]@users.noreply.github.com>
Co-authored-by: greptile-apps[bot] <165735046+greptile-apps[bot]@users.noreply.github.com>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: Thiago Bellini Ribeiro <hackedbellini@gmail.com>

Author: 5 people

RELEASE.md

@@ -0,0 +1,16 @@
+---
+release type: minor
+social_messages:
+  x: >-
+    {project_name} {version} is out! This release adds richer verbose output
+    to `assert_no_errors`, including full response error details for easier
+    debugging. 🍓 https://strawberry.rocks/release/{version}
+  linkedin: >-
+    {project_name} {version} is out. This release adds richer verbose output
+    to `assert_no_errors`, including full response error details for easier
+    debugging.
+---
+
+This release adds richer verbose output to `assert_no_errors`. When GraphQL
+errors are detected, the assertion now includes full error details, making it
+easier to debug failing tests.

strawberry/aiohttp/test/client.py

@@ -27,7 +27,7 @@ async def query(
 
         if assert_no_errors:
             assert resp.status == 200
-            assert response.errors is None
+            assert response.errors is None, response.errors
 
         return response
 

strawberry/test/client.py

@@ -53,7 +53,7 @@ def query(
         )
 
         if assert_no_errors:
-            assert response.errors is None
+            assert response.errors is None, response.errors
 
         return response
 

tests/test/test_client.py

@@ -1,9 +1,20 @@
+"""Test that assert_no_errors includes response.errors in the AssertionError message."""
+
 from contextlib import nullcontext
 
 import pytest
 
 from strawberry.utils.await_maybe import await_maybe
 
+QUERY_TO_NON_EXISTENT_FIELD = "{ nonExistentField { id } }"
+
+NON_EXISTENT_FIELD_ERRORS = [
+    {
+        "message": "Cannot query field 'nonExistentField' on type 'Query'.",
+        "locations": [{"line": 1, "column": 3}],
+    }
+]
+
 
 @pytest.mark.parametrize(
     ("assert_no_errors", "expectation"),
@@ -18,3 +29,10 @@ async def test_query_with_assert_no_errors_option(
         await await_maybe(
             graphql_client.query(query, assert_no_errors=assert_no_errors)
         )
+
+
+async def test_assert_no_errors_includes_response_errors_in_message(graphql_client):
+    with pytest.raises(AssertionError) as exc_info:
+        await await_maybe(graphql_client.query(QUERY_TO_NON_EXISTENT_FIELD))
+
+    assert exc_info.value.args[0] == NON_EXISTENT_FIELD_ERRORS