Python: Run match tests if Python 3.10 or newer

Also fixes a bug in the tests

Author: RasmusWL

python/ql/test/experimental/dataflow/match/test.py

@@ -48,8 +48,8 @@ def test_or_pattern():
 # No flow for literal pattern
 def test_literal_pattern():
     match SOURCE:
-        case 42 as x:
-            SINK(x) #$ flow="SOURCE, l:-2 -> x" flow="42, l:-1 -> x"
+        case "source" as x:
+            SINK(x) #$ flow="SOURCE, l:-2 -> x" flow="'source', l:-1 -> x"
 
 def test_capture_pattern():
     match SOURCE:

python/ql/test/experimental/dataflow/validTest.py

@@ -1,3 +1,5 @@
+import sys
+
 def check_output(outtext, f):
     if outtext == "OK\n":
         pass
@@ -59,8 +61,11 @@ def check_tests_valid(testFile):
     check_tests_valid("module-initialization.multiphase")
     check_tests_valid("fieldflow.test")
 
-    # The below will fail unless we use Python 3.10 or newer.
-    # check_tests_valid("match.test")
+    if sys.version_info[:2] >= (3, 10):
+        print("INFO: Will run `match` tests since we're running Python 3.10 or newer")
+        check_tests_valid("match.test")
+    else:
+        print("WARN: Skipping `match` tests since we're not running 3.10 or newer")
 
     # The below fails when trying to import modules
     # check_tests_valid("module-initialization.test")