mirror of
https://github.com/RobTillaart/Arduino.git
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151 lines
3.4 KiB
C++
151 lines
3.4 KiB
C++
//
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// FILE: unit_test_001.cpp
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// AUTHOR: Rob Tillaart
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// VERSION: 0.1.0
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// DATE: 2021-03-16
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// PURPOSE: unit tests for the TCA9548 I2C multiplexer
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// https://github.com/RobTillaart/TCA9548
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// https://github.com/Arduino-CI/arduino_ci/blob/master/REFERENCE.md
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//
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// supported assertions
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// ----------------------------
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// assertEqual(expected, actual); // a == b
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// assertNotEqual(unwanted, actual); // a != b
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// assertComparativeEquivalent(expected, actual); // abs(a - b) == 0 or (!(a > b) && !(a < b))
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// assertComparativeNotEquivalent(unwanted, actual); // abs(a - b) > 0 or ((a > b) || (a < b))
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// assertLess(upperBound, actual); // a < b
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// assertMore(lowerBound, actual); // a > b
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// assertLessOrEqual(upperBound, actual); // a <= b
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// assertMoreOrEqual(lowerBound, actual); // a >= b
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// assertTrue(actual);
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// assertFalse(actual);
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// assertNull(actual);
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// // special cases for floats
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// assertEqualFloat(expected, actual, epsilon); // fabs(a - b) <= epsilon
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// assertNotEqualFloat(unwanted, actual, epsilon); // fabs(a - b) >= epsilon
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// assertInfinity(actual); // isinf(a)
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// assertNotInfinity(actual); // !isinf(a)
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// assertNAN(arg); // isnan(a)
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// assertNotNAN(arg); // !isnan(a)
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/*
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most unit tests will test for fail
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as there is no sensor connected
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and there is no mockup.
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It appears that Wire.write does not fail without sensor...
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*/
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#include <ArduinoUnitTests.h>
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#include "Arduino.h"
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#include "TCA9548.h"
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int expect; // TODO needed as there seems a problem with 8 bit comparisons (char?)
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uint32_t start, stop;
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unittest_setup()
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{
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fprintf(stderr, "TCA9548_LIB_VERSION: %s\n", (char *) TCA9548_LIB_VERSION);
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}
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unittest_teardown()
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{
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}
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unittest(test_constants)
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{
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assertEqual(0, TCA9548_OK);
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assertEqual(-10, TCA9548_ERROR_I2C);
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assertEqual(-20, TCA9548_ERROR_CHANNEL);
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}
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unittest(test_constructor)
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{
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TCA9548 tca(0x70);
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Wire.begin();
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assertTrue(tca.begin());
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assertTrue(tca.isConnected());
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assertEqual(8, tca.channelCount());
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PCA9548 pca8(0x71);
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assertTrue(pca8.begin());
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assertTrue(pca8.isConnected());
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assertEqual(8, pca8.channelCount());
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PCA9546 pca6(0x71);
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assertTrue(pca6.begin());
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assertTrue(pca6.isConnected());
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assertEqual(4, pca6.channelCount());
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PCA9545 pca5(0x71);
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assertTrue(pca5.begin());
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assertTrue(pca5.isConnected());
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assertEqual(4, pca5.channelCount());
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PCA9543 pca3(0x71);
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assertTrue(pca3.begin());
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assertTrue(pca3.isConnected());
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assertEqual(2, pca3.channelCount());
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}
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unittest(test_enable)
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{
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TCA9548 tca(0x70);
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Wire.begin();
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bool b = tca.begin();
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assertEqual(b, true);
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uint8_t mask = 0x00;
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for (int chan = 0; chan < 8; chan++)
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{
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tca.enableChannel(chan);
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assertTrue(tca.isEnabled(chan));
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}
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assertEqual(0xFF, tca.getChannelMask());
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tca.setChannelMask(0x00);
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assertEqual(0x00, tca.getChannelMask());
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}
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unittest(test_select)
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{
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TCA9548 tca(0x70);
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Wire.begin();
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bool b = tca.begin();
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assertEqual(b, true);
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uint8_t mask = 0x00;
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for (int chan = 0; chan < 8; chan++)
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{
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tca.selectChannel(chan);
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assertTrue(tca.isEnabled(chan));
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}
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assertEqual(0x80, tca.getChannelMask());
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tca.setChannelMask(0x00);
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assertEqual(0x00, tca.getChannelMask());
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}
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unittest_main()
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// -- END OF FILE --
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