add test for traceback module

Author: microdev1

tests/circuitpython/traceback_test.py

@@ -0,0 +1,25 @@
+try:
+    import traceback
+except ImportError:
+    print("SKIP")
+    raise SystemExit
+
+
+def fun():
+    raise Exception("test")
+
+
+try:
+    fun()
+except Exception as exc:
+    print("\nNo Trace:")
+    traceback.print_exception(None, exc, None)
+    print("\nDefault Trace:")
+    traceback.print_exception(None, exc, exc.__traceback__)
+    print("\nLimit=1 Trace:")
+    traceback.print_exception(None, exc, exc.__traceback__, limit=1)
+    print("\nLimit=0 Trace:")
+    traceback.print_exception(None, exc, exc.__traceback__, limit=0)
+    print("\nLimit=-1 Trace:")
+    traceback.print_exception(None, exc, exc.__traceback__, limit=-1)
+    print("")