drivers/led/neopixel: Add tests for new features.

Signed-off-by: Tom Mount <tmountjr@gmail.com>

micropython/drivers/led/neopixel/neopixel_test.py

@@ -0,0 +1,32 @@
+import machine
+import neopixel
+
+
+def neopixel_test():
+    np = neopixel.NeoPixel(machine.Pin(1), 3)
+    print("Fill with a color.")
+    np.fill((255, 128, 64))
+    print("Verify the bytes to be written")
+    expected_bytearray = bytearray([255, 128, 64, 255, 128, 64, 255, 128, 64])
+    actual_bytearray = np.buf
+    print(
+        f'Initial fill: {"passed" if expected_bytearray == actual_bytearray else "failed"}.'
+    )
+    print()
+
+    print("Change brightness of all pixels.")
+    np.brightness(0.5)
+    expected_bytearray = bytearray([127, 64, 32, 127, 64, 32, 127, 64, 32])
+    actual_bytearray = np.buf
+    print(
+        f'Brightness change: {"passed" if expected_bytearray == actual_bytearray else "failed"}.'
+    )
+    print()
+
+    print("Get current brightness.")
+    expected_brightness = 0.5
+    actual_brightness = np.brightness()
+    print(
+        f'Brightness get: {"passed" if expected_brightness == actual_brightness else "failed"}.'
+    )
+    print()