Add test checking cibuildwheel detects when PATH is messed up by CIBW_ENVIRONMENT

test/05_environment/cibuildwheel_test.py

@@ -1,5 +1,6 @@
 import os
-
+import pytest
+import subprocess
 import utils
 
 
@@ -17,3 +18,15 @@ def test():
     # also check that we got the right wheels built
     expected_wheels = utils.expected_wheels('spam', '0.1.0')
     assert set(actual_wheels) == set(expected_wheels)
+
+
+def test_overridden_path(tmp_path):
+    project_dir = os.path.dirname(__file__)
+
+    # mess up PATH, somehow
+    with pytest.raises(subprocess.CalledProcessError):
+        utils.cibuildwheel_run(project_dir, output_dir=tmp_path, add_env={
+            'CIBW_ENVIRONMENT': '''SOMETHING="$(mkdir new_path && touch new_path/python)" PATH="$(realpath new_path):$PATH"''',
+            'CIBW_ENVIRONMENT_WINDOWS': '''SOMETHING="$(mkdir new_path && type nul > new_path/python.exe)" PATH="$CD\\new_path;$PATH"''',
+        })
+    assert len(os.listdir(str(tmp_path))) == 0