Always run test-introspection on PRs (#5461)

* Always run test-introspection on PRs

- run only introspection on Ubuntu in debug builds
- allow to configure if debug or release build is used when running test-introspection

* Do not run introspection in release mode

Author: Tpt

.github/workflows/ci.yml

@@ -701,6 +701,21 @@ jobs:
     env:
       CARGO_BUILD_TARGET: ${{ matrix.platform.rust-target }}
 
+  test-introspection-pr:
+    needs: [fmt]
+    if: ${{ !contains(github.event.pull_request.labels.*.name, 'CI-build-full') && github.event_name == 'pull_request' }}
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v5
+      - uses: dtolnay/rust-toolchain@stable
+        with:
+          components: rust-src
+      - uses: actions/setup-python@v6
+        with:
+          python-version: "3.13"
+      - run: python -m pip install --upgrade pip && pip install nox[uv]
+      - run: nox -s test-introspection
+
   conclusion:
     needs:
       - fmt

noxfile.py

@@ -1090,21 +1090,24 @@ def update_ui_tests(session: nox.Session):
 def test_introspection(session: nox.Session):
     session.install("maturin")
     session.install("ruff")
+    options = []
     target = os.environ.get("CARGO_BUILD_TARGET")
-    for options in ([], ["--release"]):
-        if target is not None:
-            options += ("--target", target)
-        session.run_always("maturin", "develop", "-m", "./pytests/Cargo.toml", *options)
-        # We look for the built library
-        lib_file = None
-        for file in Path(session.virtualenv.location).rglob("pyo3_pytests.*"):
-            if file.is_file():
-                lib_file = str(file.resolve())
-        _run_cargo_test(
-            session,
-            package="pyo3-introspection",
-            env={"PYO3_PYTEST_LIB_PATH": lib_file},
-        )
+    if target is not None:
+        options += ("--target", target)
+    profile = os.environ.get("CARGO_BUILD_PROFILE")
+    if profile == "release":
+        options.append("--release")
+    session.run_always("maturin", "develop", "-m", "./pytests/Cargo.toml", *options)
+    # We look for the built library
+    lib_file = None
+    for file in Path(session.virtualenv.location).rglob("pyo3_pytests.*"):
+        if file.is_file():
+            lib_file = str(file.resolve())
+    _run_cargo_test(
+        session,
+        package="pyo3-introspection",
+        env={"PYO3_PYTEST_LIB_PATH": lib_file},
+    )
 
 
 def _build_docs_for_ffi_check(session: nox.Session) -> None: