Capture CalledProcessError for any postitive returncode (#1450)

- Leave logic to still allow for formatting changes to be ignored
- Now just capture the output of any other error that has a > 1 returncode
- Raise on anything else

Test: Add unit test to exercise this new logic

src/black_primer/lib.py

@@ -131,6 +131,10 @@ async def black_run(
             else:
                 results.stats["success"] += 1
             return
+        elif cpe.returncode > 1:
+            results.stats["failed"] += 1
+            results.failed_projects[repo_path.name] = cpe
+            return
 
         LOG.error(f"Unknown error with {repo_path}")
         raise

tests/test_primer.py

@@ -67,10 +67,14 @@ def event_loop() -> Iterator[None]:
         loop.close()
 
 
-async def raise_subprocess_error(*args: Any, **kwargs: Any) -> None:
+async def raise_subprocess_error_1(*args: Any, **kwargs: Any) -> None:
     raise CalledProcessError(1, ["unittest", "error"], b"", b"")
 
 
+async def raise_subprocess_error_123(*args: Any, **kwargs: Any) -> None:
+    raise CalledProcessError(123, ["unittest", "error"], b"", b"")
+
+
 async def return_false(*args: Any, **kwargs: Any) -> bool:
     return False
 
@@ -123,11 +127,16 @@ def test_black_run(self) -> None:
         # Test a fail based on returning 1 and not expecting formatting changes
         project_config["expect_formatting_changes"] = False
         results = lib.Results({"failed": 0, "success": 0}, {})
-        with patch("black_primer.lib._gen_check_output", raise_subprocess_error):
+        with patch("black_primer.lib._gen_check_output", raise_subprocess_error_1):
             loop.run_until_complete(lib.black_run(repo_path, project_config, results))
         self.assertEqual(1, results.stats["failed"])
         self.assertTrue(results.failed_projects)
 
+        # Test a formatting error based on returning 123
+        with patch("black_primer.lib._gen_check_output", raise_subprocess_error_123):
+            loop.run_until_complete(lib.black_run(repo_path, project_config, results))
+        self.assertEqual(2, results.stats["failed"])
+
     @event_loop()
     def test_gen_check_output(self) -> None:
         loop = asyncio.get_event_loop()