test: add a test of hash-based pyc files

Author: nedbat

tests/test_execfile.py

@@ -8,6 +8,7 @@
 import os
 import os.path
 import pathlib
+import py_compile
 import re
 
 import pytest
@@ -105,7 +106,7 @@ def test_directory_without_main(self):
 class RunPycFileTest(CoverageTest):
     """Test cases for `run_python_file`."""
 
-    def make_pyc(self):
+    def make_pyc(self, **kwargs):
         """Create a .pyc file, and return the path to it."""
         if env.JYTHON:
             pytest.skip("Can't make .pyc files on Jython")
@@ -116,7 +117,7 @@ def doit():
 
             doit()
             """)
-        compileall.compile_dir(".", quiet=True)
+        compileall.compile_dir(".", quiet=True, **kwargs)
         os.remove("compiled.py")
 
         # Find the .pyc file!
@@ -149,6 +150,12 @@ def test_running_pyc_from_wrong_python(self):
         # In some environments, the pycfile persists and pollutes another test.
         os.remove(pycfile)
 
+    @pytest.mark.skipif(not env.PYBEHAVIOR.hashed_pyc_pep552, reason="No hashed .pyc here")
+    def test_running_hashed_pyc(self):
+        pycfile = self.make_pyc(invalidation_mode=py_compile.PycInvalidationMode.CHECKED_HASH)
+        run_python_file([pycfile])
+        assert self.stdout() == "I am here!\n"
+
     def test_no_such_pyc_file(self):
         path = python_reported_file('xyzzy.pyc')
         msg = re.escape(f"No file to run: '{path}'")