micropython: add micropython component

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

@@ -0,0 +1,47 @@
+# A contains everything
+class A:
+    def __contains__(self, key):
+        return True
+
+a = A()
+print(True in a)
+print(1 in a)
+print(() in a)
+
+# B contains given things
+class B:
+    def __init__(self, items):
+        self.items = items
+    def __contains__(self, key):
+        return key in self.items
+
+b = B([])
+print(1 in b)
+b = B([1, 2])
+print(1 in b)
+print(2 in b)
+print(3 in b)
+
+
+class C:
+    def __contains__(self, arg):
+        return arg
+
+
+print(C().__contains__(0))
+print(C().__contains__(1))
+print(C().__contains__(''))
+print(C().__contains__('foo'))
+print(C().__contains__(None))
+
+print(0 in C())
+print(1 in C())
+print('' in C())
+print('foo' in C())
+print(None in C())
+
+print(0 not in C())
+print(1 not in C())
+print('' not in C())
+print('foo' not in C())
+print(None not in C())