micropython: add micropython component

components/language/micropython/tests/basics/memoryview1.py

@@ -0,0 +1,79 @@
+# test memoryview
+try:
+    memoryview
+except:
+    print("SKIP")
+    raise SystemExit
+try:
+    import uarray as array
+except ImportError:
+    try:
+        import array
+    except ImportError:
+        print("SKIP")
+        raise SystemExit
+
+# test reading from bytes
+b = b'1234'
+m = memoryview(b)
+print(len(m))
+print(m[0], m[1], m[-1])
+print(list(m))
+
+# test writing to bytes
+try:
+    m[0] = 1
+except TypeError:
+    print("TypeError")
+try:
+    m[0:2] = b'00'
+except TypeError:
+    print("TypeError")
+
+# test writing to bytearray
+b = bytearray(b)
+m = memoryview(b)
+m[0] = 1
+print(b)
+print(list(m))
+
+# test slice
+m = memoryview(b'1234')
+print(list(m[1:]))
+print(list(m[1:-1]))
+
+# this tests get_buffer of memoryview
+m = memoryview(bytearray(2))
+print(bytearray(m))
+print(list(memoryview(memoryview(b'1234')))) # read-only memoryview
+
+a = array.array('i', [1, 2, 3, 4])
+m = memoryview(a)
+print(list(m))
+print(list(m[1:-1]))
+m[2] = 6
+print(a)
+
+# invalid attribute
+try:
+    memoryview(b'a').noexist
+except AttributeError:
+    print('AttributeError')
+
+# equality
+print(memoryview(b'abc') == b'abc')
+print(memoryview(b'abc') != b'abc')
+print(memoryview(b'abc') == b'xyz')
+print(memoryview(b'abc') != b'xyz')
+print(b'abc' == memoryview(b'abc'))
+print(b'abc' != memoryview(b'abc'))
+print(b'abc' == memoryview(b'xyz'))
+print(b'abc' != memoryview(b'xyz'))
+print(memoryview(b'abcdef')[2:4] == b'cd')
+print(memoryview(b'abcdef')[2:4] != b'cd')
+print(memoryview(b'abcdef')[2:4] == b'xy')
+print(memoryview(b'abcdef')[2:4] != b'xy')
+print(b'cd' == memoryview(b'abcdef')[2:4])
+print(b'cd' != memoryview(b'abcdef')[2:4])
+print(b'xy' == memoryview(b'abcdef')[2:4])
+print(b'xy' != memoryview(b'abcdef')[2:4])