tests: Replace umodule with module everywhere.

This work was funded through GitHub Sponsors.

Signed-off-by: Jim Mussared <jim.mussared@gmail.com>

tests/extmod/random_seed_default.py

@@ -0,0 +1,27 @@
+# test random.seed() without any arguments
+
+try:
+    import random
+except ImportError:
+    print("SKIP")
+    raise SystemExit
+
+try:
+    random.seed()
+except ValueError:
+    # no default seed on this platform
+    print("SKIP")
+    raise SystemExit
+
+
+def rng_seq():
+    return [random.getrandbits(16) for _ in range(10)]
+
+
+# seed with default and check that doesn't produce the same RNG sequence
+random.seed()
+seq = rng_seq()
+random.seed()
+print(seq == rng_seq())
+random.seed(None)
+print(seq == rng_seq())