tests: new test

Author: gpongelli

gpio_expander.py

@@ -221,7 +221,7 @@ def __init__(self, i2c_bus: I2C, address: int, **kwargs) -> None:
         self.i2c_device = i2cdevice.I2CDevice(i2c_bus, address)
 
     def max_gpios(self):
-        return getattr(self, '_GPIO_NUMBER')
+        return getattr(self, '_NUM_GPIO')
 
 # RPi.GPIO compatible interface
     def setmode(self, gpio: int) -> None:

tests/test_pca9534.py

@@ -8,3 +8,8 @@ def test_pca9534_object(mock_i2c, registry_list_8_gpio):
     _dev_attribs = dir(_dev)
     for _r in registry_list_8_gpio:
         assert _r in _dev_attribs
+
+
+def test_pca9534_num_gpios(mock_i2c):
+    _dev = gpio_expander.PCA9534(I2C(2, 3), 4)  # fake addresses
+    assert 8 == _dev.max_gpios()

tests/test_pca9535.py

@@ -8,3 +8,8 @@ def test_pca9535_object(mock_i2c, registry_list_16_gpio):
     _dev_attribs = dir(_dev)
     for _r in registry_list_16_gpio:
         assert _r in _dev_attribs
+
+
+def test_pca9535_num_gpios(mock_i2c):
+    _dev = gpio_expander.PCA9535(I2C(2, 3), 4)  # fake addresses
+    assert 16 == _dev.max_gpios()

tests/test_pca9555.py

@@ -16,3 +16,8 @@ def test_pca9555_object(mock_i2c, registry_list_16_gpio):
 #
 #     #assert _dev.O0_0 is True
 #     assert _dev.GPIO0.value is True
+
+
+def test_pca9555_num_gpios(mock_i2c):
+    _dev = gpio_expander.PCA9555(I2C(2, 3), 4)  # fake addresses
+    assert 16 == _dev.max_gpios()

tests/test_tca9534.py

@@ -8,3 +8,8 @@ def test_tca9534_object(mock_i2c, registry_list_8_gpio):
     _dev_attribs = dir(_dev)
     for _r in registry_list_8_gpio:
         assert _r in _dev_attribs
+
+
+def test_tca9534_num_gpios(mock_i2c):
+    _dev = gpio_expander.TCA9534(I2C(2, 3), 4)  # fake addresses
+    assert 8 == _dev.max_gpios()

tests/test_tca9535.py

@@ -8,3 +8,8 @@ def test_tca9535_object(mock_i2c, registry_list_16_gpio):
     _dev_attribs = dir(_dev)
     for _r in registry_list_16_gpio:
         assert _r in _dev_attribs
+
+
+def test_tca9535_num_gpios(mock_i2c):
+    _dev = gpio_expander.TCA9535(I2C(2, 3), 4)  # fake addresses
+    assert 16 == _dev.max_gpios()

tests/test_tca9555.py

@@ -0,0 +1,15 @@
+import gpio_expander
+import pytest
+from busio import I2C
+
+
+def test_tca9555_object(mock_i2c, registry_list_16_gpio):
+    _dev = gpio_expander.TCA9555(I2C(2, 3), 4)  # fake addresses
+    _dev_attribs = dir(_dev)
+    for _r in registry_list_16_gpio:
+        assert _r in _dev_attribs
+
+
+def test_tca9555_num_gpios(mock_i2c):
+    _dev = gpio_expander.TCA9555(I2C(2, 3), 4)  # fake addresses
+    assert 16 == _dev.max_gpios()