add test on pipx run

tests/test_run.py

@@ -11,7 +11,7 @@
 import pipx.util
 from helpers import run_pipx_cli
 from package_info import PKG
-from pipx import constants
+from pipx import constants, shared_libs
 
 
 def test_help_text(pipx_temp_env, monkeypatch, capsys):
@@ -299,6 +299,21 @@ def test_run_with_requirements_and_args(caplog, pipx_temp_env, tmp_path):
     assert out.read_text() == "2"
 
 
+def test_pip_args_forwarded_to_shared_libs(pipx_ultra_temp_env, capsys, caplog):
+    # strategy:
+    # 1. start from an empty env to ensure the next command would trigger a shared lib update
+    assert shared_libs.shared_libs.needs_upgrade
+    # 2. install any package with --no-index
+    # and check that the shared library update phase fails
+    return_code = run_pipx_cli(["run", "pycowsay", "--verbose", "--pip-args='--no-index'"])
+    assert "Upgrading shared libraries in" in caplog.text
+
+    captured = capsys.readouterr()
+    assert return_code != 0
+    assert "ERROR: Could not find a version that satisfies the requirement pip" in captured.err
+    assert "Failed to upgrade shared libraries" in caplog.text
+
+
 @mock.patch("os.execvpe", new=execvpe_mock)
 def test_run_with_invalid_requirement(capsys, pipx_temp_env, tmp_path):
     script = tmp_path / "test.py"