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177 lines
3.9 KiB
C++
177 lines
3.9 KiB
C++
//
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// FILE: unit_test_001.cpp
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// AUTHOR: Rob Tillaart
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// DATE: 2021-11-26
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// PURPOSE: unit tests for the float16 data type
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// https://github.com/RobTillaart/float16
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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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#include <ArduinoUnitTests.h>
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#include "Arduino.h"
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#include "float16.h"
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unittest_setup()
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{
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fprintf(stderr, "FLOAT16_LIB_VERSION: %s\n", (char*) FLOAT16_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_constructor)
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{
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float16 zero;
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assertEqualFloat(0.000, zero.toDouble(), 1e-3);
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float16 one(1);
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assertEqualFloat(1.000, one.toDouble(), 1e-3);
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float16 e(exp(1));
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assertEqualFloat(1.000, ( 2.7183 / e.toDouble()), 1e-3);
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float16 pie(PI);
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assertEqualFloat(1.000, (3.142 / pie.toDouble()), 1e-3);
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float goldenRatio = 1.61803398875;
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float16 gr(goldenRatio);
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assertEqualFloat(1.000, (goldenRatio / gr.toDouble()), 1e-3);
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float16 minusOne(-1);
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// fprintf(stderr, "MINUSONE: %f\n", minusOne.toDouble());
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assertEqualFloat(1.000, (-1 / minusOne.toDouble()), 1e-3);
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// TODO
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// NAN constructor how to test
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// float16 nanny(1.0/0.0);
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// assertNAN(nanny.toDouble());
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// Overflow constructor
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float16 big(1e6);
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assertInfinity(big.toDouble());
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float16 bag(-1e6);
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assertInfinity(bag.toDouble());
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float16 small(1e-30);
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assertEqualFloat(0.0, small.toDouble(), 1e-3);
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float16 smaller(-1e-30);
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assertEqualFloat(0.0, smaller.toDouble(), 1e-3);
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}
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unittest(test_compare_equal)
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{
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float16 a(1);
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float16 b(1);
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float16 c(2);
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float16 d(-1);
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assertTrue(a == a);
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assertTrue(a == b);
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assertFalse(a == c);
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assertFalse(a == d);
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fprintf(stderr, "\n");
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assertFalse(a != a);
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assertFalse(a != b);
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assertTrue(a != c);
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assertTrue(a != d);
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}
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unittest(test_compare_1nequal)
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{
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float16 a(1);
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float16 b(1);
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float16 c(2);
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float16 d(-2);
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assertFalse(a < a);
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assertTrue(a <= b);
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assertFalse(a > b);
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assertTrue(a >= a);
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fprintf(stderr, "\n");
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assertTrue(a < c);
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assertTrue(a <= c);
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assertFalse(a > c);
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assertFalse(a >= c);
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fprintf(stderr, "\n");
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assertFalse(a < d);
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assertFalse(a <= d);
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assertTrue(a > d);
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assertTrue(a >= d);
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}
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unittest(test_negation)
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{
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float16 f16(123.456);
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float16 f17(-f16);
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float16 f18 = -f16;
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assertEqualFloat(-123.456, f17.toDouble(), 1e-1);
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assertEqualFloat(-123.456, f18.toDouble(), 1e-1);
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}
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unittest(test_conversion)
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{
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for (int i = 0; i < 20; i++)
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{
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float f = random(60000000) * 0.001;
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float16 f16(f);
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assertEqualFloat(1, (f / f16.toDouble()), 1e-3);
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}
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}
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unittest(test_printable)
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{
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float16 f16(123.456);
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// test default value.
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assertEqual(4, f16.getDecimals());
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for (int i = 0; i < 6; i++)
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{
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f16.setDecimals(i);
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assertEqual(i, f16.getDecimals());
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}
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// TODO
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// printable? how to test?
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}
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unittest_main()
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// -- END OF FILE --
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