diff options
Diffstat (limited to 'src/test/java/sevenUnits/unit/UnitTest.java')
| -rw-r--r-- | src/test/java/sevenUnits/unit/UnitTest.java | 106 |
1 files changed, 54 insertions, 52 deletions
diff --git a/src/test/java/sevenUnits/unit/UnitTest.java b/src/test/java/sevenUnits/unit/UnitTest.java index 4d9a103..7ae550f 100644 --- a/src/test/java/sevenUnits/unit/UnitTest.java +++ b/src/test/java/sevenUnits/unit/UnitTest.java @@ -32,7 +32,7 @@ import sevenUnits.utils.NameSymbol; /** * Testing the various Unit classes. This is NOT part of this program's public * API. - * + * * @author Adrien Hopkins * @since 2018-12-22 * @since v0.1.0 @@ -40,119 +40,121 @@ import sevenUnits.utils.NameSymbol; class UnitTest { /** A random number generator */ private static final Random rng = ThreadLocalRandom.current(); - + @Test public void testAdditionAndSubtraction() { - final LinearUnit inch = Metric.METRE.times(0.0254) + final var inch = Metric.METRE.times(0.0254) .withName(NameSymbol.of("inch", "in")); - final LinearUnit foot = Metric.METRE.times(0.3048) + final var foot = Metric.METRE.times(0.3048) .withName(NameSymbol.of("foot", "ft")); - - assertTrue(inch.plus(foot).equalsApproximately(Metric.METRE.times(0.3302)), - String.format("Expected: %s, Actual: %s", - inch.plus(foot), Metric.METRE.times(0.3302))); - assertTrue(foot.minus(inch).equalsApproximately(Metric.METRE.times(0.2794)), - String.format("Expected: %s, Actual: %s", - foot.minus(inch), Metric.METRE.times(0.2794))); - + + assertTrue( + inch.plus(foot).equalsApproximately(Metric.METRE.times(0.3302)), + String.format("Expected: %s, Actual: %s", inch.plus(foot), + Metric.METRE.times(0.3302))); + assertTrue( + foot.minus(inch).equalsApproximately(Metric.METRE.times(0.2794)), + String.format("Expected: %s, Actual: %s", foot.minus(inch), + Metric.METRE.times(0.2794))); + // test with LinearUnitValue - final LinearUnitValue value1 = LinearUnitValue.getExact(Metric.METRE, 15); - final LinearUnitValue value2 = LinearUnitValue.getExact(foot, 120); - final LinearUnitValue value3 = LinearUnitValue.getExact(Metric.METRE, + final var value1 = LinearUnitValue.getExact(Metric.METRE, 15); + final var value2 = LinearUnitValue.getExact(foot, 120); + final var value3 = LinearUnitValue.getExact(Metric.METRE, 0.5); - final LinearUnitValue value4 = LinearUnitValue.getExact(Metric.KILOGRAM, + final var value4 = LinearUnitValue.getExact(Metric.KILOGRAM, 60); - + // make sure addition is done correctly assertEquals(51.576, value1.plus(value2).getValueExact(), 0.001); assertEquals(15.5, value1.plus(value3).getValueExact()); assertEquals(52.076, value1.plus(value2).plus(value3).getValueExact(), 0.001); - + // make sure addition uses the correct unit, and is still associative // (ignoring floating-point rounding errors) assertEquals(Metric.METRE, value1.plus(value2).getUnit()); assertEquals(Metric.METRE, value1.plus(value2).plus(value3).getUnit()); assertEquals(foot, value2.plus(value1).getUnit()); assertTrue(value1.plus(value2).equals(value2.plus(value1), true)); - + // make sure errors happen when they should assertThrows(IllegalArgumentException.class, () -> value1.plus(value4)); assertThrows(IllegalArgumentException.class, () -> value1.minus(value4)); } - + @Test public void testConversion() { - final LinearUnit metre = Metric.METRE; + final var metre = Metric.METRE; final Unit inch = metre.times(0.0254); - - final UnitValue value = UnitValue.of(inch, 75); - + + final var value = UnitValue.of(inch, 75); + assertEquals(1.9, inch.convertTo(metre, 75), 0.01); assertEquals(1.9, value.convertTo(metre).getValue(), 0.01); - + // try random stuff - for (int i = 0; i < 1000; i++) { + for (var i = 0; i < 1000; i++) { // initiate random values - final double conversionFactor = UnitTest.rng.nextDouble() * 1000000; - final double testValue = UnitTest.rng.nextDouble() * 1000000; - final double expected = testValue * conversionFactor; - + final var conversionFactor = UnitTest.rng.nextDouble() * 1000000; + final var testValue = UnitTest.rng.nextDouble() * 1000000; + final var expected = testValue * conversionFactor; + // test final Unit unit = Metric.METRE.times(conversionFactor); - final double actual = unit.convertToBase(testValue); - + final var actual = unit.convertToBase(testValue); + assertEquals(actual, expected, expected * DecimalComparison.DOUBLE_EPSILON); } } - + @Test public void testEquals() { - final LinearUnit metre = Metric.METRE; + final var metre = Metric.METRE; final Unit meter = Metric.BaseUnits.METRE.asLinearUnit(); - + assertEquals(metre, meter); } - + @Test public void testIsMetric() { final Unit metre = Metric.METRE; final Unit megasecond = Metric.SECOND.withPrefix(Metric.MEGA); final Unit hour = Metric.HOUR; - + assertTrue(metre.isMetric()); assertTrue(megasecond.isMetric()); assertFalse(hour.isMetric()); } - + @Test public void testMultiplicationAndDivision() { // test unit-times-unit multiplication - final LinearUnit generatedJoule = Metric.KILOGRAM + final var generatedJoule = Metric.KILOGRAM .times(Metric.METRE.toExponent(2)) .dividedBy(Metric.SECOND.toExponent(2)); - final LinearUnit actualJoule = Metric.JOULE; - + final var actualJoule = Metric.JOULE; + assertEquals(generatedJoule, actualJoule); - + // test multiplication by conversion factors - final LinearUnit kilometre = Metric.METRE.times(1000); - final LinearUnit hour = Metric.SECOND.times(3600); - final LinearUnit generatedKPH = kilometre.dividedBy(hour); - - final LinearUnit actualKPH = Metric.METRE.dividedBy(Metric.SECOND) + final var kilometre = Metric.METRE.times(1000); + final var hour = Metric.SECOND.times(3600); + final var generatedKPH = kilometre.dividedBy(hour); + + final var actualKPH = Metric.METRE.dividedBy(Metric.SECOND) .dividedBy(3.6); - + assertEquals(generatedKPH, actualKPH); } - + @Test public void testPrefixes() { - final LinearUnit generatedKilometre = Metric.METRE + final var generatedKilometre = Metric.METRE .withPrefix(Metric.KILO); - final LinearUnit actualKilometre = Metric.METRE.times(1000); - + final var actualKilometre = Metric.METRE.times(1000); + assertEquals(generatedKilometre, actualKilometre); } } |