micropython: add micropython component

components/language/micropython/tests/extmod/framebuf_subclass.py

@@ -0,0 +1,50 @@
+# test subclassing framebuf.FrameBuffer
+
+try:
+    import framebuf, usys
+except ImportError:
+    print("SKIP")
+    raise SystemExit
+
+# This test and its .exp file is based on a little-endian architecture.
+if usys.byteorder != "little":
+    print("SKIP")
+    raise SystemExit
+
+
+class FB(framebuf.FrameBuffer):
+    def __init__(self, n):
+        self.n = n
+        super().__init__(bytearray(2 * n * n), n, n, framebuf.RGB565)
+
+    def foo(self):
+        self.hline(0, 2, self.n, 0x0304)
+
+
+fb = FB(n=3)
+fb.pixel(0, 0, 0x0102)
+fb.foo()
+print(bytes(fb))
+
+# Test that blitting a subclass works.
+fb2 = framebuf.FrameBuffer(bytearray(2 * 3 * 3), 3, 3, framebuf.RGB565)
+fb.fill(0)
+fb.pixel(0, 0, 0x0506)
+fb.pixel(2, 2, 0x0708)
+fb2.blit(fb, 0, 0)
+print(bytes(fb2))
+
+# Test that blitting something that isn't a subclass fails with TypeError.
+class NotAFrameBuf:
+    pass
+
+
+try:
+    fb.blit(NotAFrameBuf(), 0, 0)
+except TypeError:
+    print("TypeError")
+
+try:
+    fb.blit(None, 0, 0)
+except TypeError:
+    print("TypeError")