micropython: add micropython component

components/language/micropython/tests/float/builtin_float_round.py

@@ -0,0 +1,34 @@
+# test round() with floats
+
+# check basic cases
+tests = [
+    [0.0],
+    [1.0],
+    [0.1],
+    [-0.1],
+    [123.4],
+    [123.6],
+    [-123.4],
+    [-123.6],
+    [1.234567, 5],
+    [1.23456, 1],
+    [1.23456, 0],
+    [1234.56, -2],
+]
+for t in tests:
+    print(round(*t))
+
+# check .5 cases
+for i in range(11):
+    print(round((i - 5) / 2))
+
+# test second arg
+for i in range(-1, 3):
+    print(round(1.47, i))
+
+# test inf and nan
+for val in (float("inf"), float("nan")):
+    try:
+        round(val)
+    except (ValueError, OverflowError) as e:
+        print(type(e))