tests: Add feature check for uio module and skip corresponding tests.

tests/feature_check/uio_module.py

@@ -0,0 +1,5 @@
+try:
+    import uio
+    print("uio")
+except ImportError:
+    print("no")

tests/run-tests

@@ -227,6 +227,7 @@ def run_tests(pyb, tests, args, base_path="."):
     skip_async = False
     skip_const = False
     skip_revops = False
+    skip_io_module = False
     skip_endian = False
     has_complex = True
     has_coverage = False
@@ -276,6 +277,11 @@ def run_tests(pyb, tests, args, base_path="."):
         if output == b'TypeError\n':
             skip_revops = True
 
+        # Check if uio module exists, and skip such tests if it doesn't
+        output = run_feature_check(pyb, args, base_path, 'uio_module.py')
+        if output != b'uio\n':
+            skip_io_module = True
+
         # Check if emacs repl is supported, and skip such tests if it's not
         t = run_feature_check(pyb, args, base_path, 'repl_emacs_check.py')
         if not 'True' in str(t, 'ascii'):
@@ -430,6 +436,7 @@ def run_tests(pyb, tests, args, base_path="."):
         is_slice = test_name.find("slice") != -1 or test_name in misc_slice_tests
         is_async = test_name.startswith("async_")
         is_const = test_name.startswith("const")
+        is_io_module = test_name.startswith("io_")
 
         skip_it = test_file in skip_tests
         skip_it |= skip_native and is_native
@@ -441,6 +448,7 @@ def run_tests(pyb, tests, args, base_path="."):
         skip_it |= skip_async and is_async
         skip_it |= skip_const and is_const
         skip_it |= skip_revops and test_name.startswith("class_reverse_op")
+        skip_it |= skip_io_module and is_io_module
 
         if args.list_tests:
             if not skip_it: