Additional tests

tests/test_max7219.py

@@ -0,0 +1,114 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+# Copyright (c) 2014-17 Richard Hull and contributors
+# See LICENSE.rst for details.
+
+
+try:
+    from unittest.mock import call, Mock
+except ImportError:
+    from mock import call, Mock
+
+import pytest
+import luma.core.error
+from luma.led_matrix.device import max7219
+from luma.core.render import canvas
+
+serial = Mock(unsafe=True)
+
+
+def setup_function(function):
+    serial.reset_mock()
+    serial.command.side_effect = None
+
+
+def test_init_cascaded():
+    device = max7219(serial, cascaded=4)
+    assert device.width == 32
+    assert device.height == 8
+
+
+def test_init_8x8():
+    device = max7219(serial)
+    assert device.cascaded == 1
+    serial.data.assert_has_calls([
+        call([11, 7]),
+        call([9, 0]),
+        call([15, 0]),
+        call([10, 7]),
+        call([1, 0]),
+        call([2, 0]),
+        call([3, 0]),
+        call([4, 0]),
+        call([5, 0]),
+        call([6, 0]),
+        call([7, 0]),
+        call([8, 0]),
+        call([12, 1])
+    ])
+
+
+def test_init_16x8():
+    device = max7219(serial, width=16, height=8)
+    assert device.cascaded == 2
+    serial.data.assert_has_calls([
+        call([11, 7, 11, 7]),
+        call([9, 0, 9, 0]),
+        call([15, 0, 15, 0]),
+        call([10, 7, 10, 7]),
+        call([1, 0, 1, 0]),
+        call([2, 0, 2, 0]),
+        call([3, 0, 3, 0]),
+        call([4, 0, 4, 0]),
+        call([5, 0, 5, 0]),
+        call([6, 0, 6, 0]),
+        call([7, 0, 7, 0]),
+        call([8, 0, 8, 0]),
+        call([12, 1, 12, 1])
+    ])
+
+
+def test_init_invalid_dimensions():
+    with pytest.raises(luma.core.error.DeviceDisplayModeError) as ex:
+        max7219(serial, width=59, height=22)
+    assert "Unsupported display mode: 59 x 22" in str(ex.value)
+
+
+def test_hide():
+    device = max7219(serial, cascaded=5)
+    serial.reset_mock()
+    device.hide()
+    serial.data.assert_called_once_with([12, 0] * 5)
+
+
+def test_show():
+    device = max7219(serial, cascaded=3)
+    serial.reset_mock()
+    device.show()
+    serial.data.assert_called_once_with([12, 1] * 3)
+
+
+def test_contrast():
+    device = max7219(serial, cascaded=6)
+    serial.reset_mock()
+    device.contrast(0x6B)
+    serial.data.assert_called_once_with([10, 6] * 6)
+
+
+def test_display():
+    device = max7219(serial, cascaded=2)
+    serial.reset_mock()
+
+    with canvas(device) as draw:
+        draw.rectangle(device.bounding_box, outline="white")
+
+    serial.data.assert_has_calls([
+        call([0x01, 0x81, 0x01, 0xFF]),
+        call([0x02, 0x81, 0x02, 0x81]),
+        call([0x03, 0x81, 0x03, 0x81]),
+        call([0x04, 0x81, 0x04, 0x81]),
+        call([0x05, 0x81, 0x05, 0x81]),
+        call([0x06, 0x81, 0x06, 0x81]),
+        call([0x07, 0x81, 0x07, 0x81]),
+        call([0x08, 0xFF, 0x08, 0x81])
+    ])

tests/test_proportional.py

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+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+# Copyright (c) 2014-17 Richard Hull and contributors
+# See LICENSE.rst for details.
+
+
+from luma.led_matrix.legacy import proportional, CP437_FONT
+
+
+def test_narrow_char():
+    font = proportional(CP437_FONT)
+    assert font[ord('!')] == [6, 95, 95, 6, 0]
+
+
+def test_wide_char():
+    font = proportional(CP437_FONT)
+    assert font[ord('W')] == CP437_FONT[ord('W')]
+
+
+def test_space_char():
+    font = proportional(CP437_FONT)
+    assert font[ord(' ')] == CP437_FONT[ord(' ')]
+
+
+def test_doublequote_char():
+    font = proportional(CP437_FONT)
+    assert font[ord('"')] == [7, 7, 0, 7, 7, 0]