micropython: add micropython component

components/language/micropython/tests/basics/int_constfolding.py

@@ -0,0 +1,41 @@
+# tests int constant folding in compiler
+
+# positive
+print(+1)
+print(+100)
+
+# negation
+print(-1)
+print(-(-1))
+
+# 1's complement
+print(~0)
+print(~1)
+print(~-1)
+
+# addition
+print(1 + 2)
+
+# subtraction
+print(1 - 2)
+print(2 - 1)
+
+# multiplication
+print(1 * 2)
+print(123 * 456)
+
+# floor div and modulo
+print(123 // 7, 123 % 7)
+print(-123 // 7, -123 % 7)
+print(123 // -7, 123 % -7)
+print(-123 // -7, -123 % -7)
+
+# power
+print(2 ** 3)
+print(3 ** 4)
+
+# won't fold so an exception can be raised at runtime
+try:
+    1 << -1
+except ValueError:
+    print('ValueError')