Add test case for freeze.

Misc/NEWS

@@ -150,6 +150,8 @@ Documentation
 Tests
 -----
 
+- Add test case for freeze.
+
 - Issue #20743: Fix a reference leak in test_tcl.
 
 - Issue #21097: Move test_namespace_pkgs into test_importlib.

Tools/freeze/test/Makefile

+# Makefile to test freeze
+# set PYTHON to path of Python interpreter to test
+PYTHON=python
+# set OUTDIR to the temp directory for freeze
+OUTDIR=outdir
+
+test:
+	$(PYTHON) ../freeze.py -o $(OUTDIR) ok.py
+	make -C $(OUTDIR)
+	

Tools/freeze/test/ok.py

+import sys
+sys.exit(0)