temp: debug

Author: nedbat

.github/workflows/testsuite.yml

@@ -146,7 +146,7 @@ jobs:
 
       - name: "Run tox for ${{ matrix.python-version }}"
         run: |
-          python -m tox -- -rfsEX
+          python -m tox -- -rfsEX -k test_process
 
       - name: "Retry tox for ${{ matrix.python-version }}"
         if: failure()

coverage/patch.py

@@ -90,12 +90,22 @@ def coverage_execv_patch(*args: Any, **kwargs: Any) -> Any:
             raise ConfigError(f"Unknown patch {patch!r}")
 
 
+PTH_EXEC = """\
+import sys, os
+print(f"{os.getcwd() = }")
+print(f"{sys.path = }")
+print(f"{os.listdir('.') = }")
+"""
+
 def create_pth_file() -> Path | None:
     """Create .pth file for measuring subprocesses."""
+    pth_text = "import coverage; coverage.process_startup()\n"
+    pth_text = rf"import os; exec({PTH_EXEC!r}+'\n'+{pth_text!r})"
     for pth_dir in site.getsitepackages():  # pragma: part covered
         pth_file = Path(pth_dir) / f"subcover_{os.getpid()}.pth"
+        print(f"Writing pth at {pth_file = }")
         try:
-            pth_file.write_text("import coverage; coverage.process_startup()\n", encoding="utf-8")
+            pth_file.write_text(pth_text, encoding="utf-8")
         except OSError:  # pragma: cant happen
             continue
         else:

tests/test_process.py

@@ -1325,6 +1325,12 @@ def test_removing_directory_with_error(self) -> None:
 class ProcessStartupTest(CoverageTest):
     """Test that we can measure coverage in subprocesses."""
 
+    def test_show_stuff(self):
+        print(f"In Test: {os.getcwd() = }")
+        print(f"In Test: {sys.path = }")
+        print(f"In Test: {os.listdir('.') = }")
+        1/0
+
     def make_main_and_sub(self) -> None:
         """Create main.py and sub.py."""
         # Main will run sub.py