65 lines
1.8 KiB
Java
65 lines
1.8 KiB
Java
package com.baeldung.doubletolong;
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import org.junit.Assert;
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import org.junit.Test;
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public class DoubleToLongUnitTest {
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final static double VALUE = 9999.999;
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@Test
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public void givenDoubleValue_whenLongValueCalled_thenLongValueReturned() {
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Assert.assertEquals(9999L, Double.valueOf(VALUE).longValue());
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}
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@Test
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public void givenDoubleValue_whenMathRoundUsed_thenRoundUp() {
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Assert.assertEquals(10000L, Math.round(VALUE));
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}
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@Test
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public void givenDoubleValue_whenMathRoundUsed_thenRoundDown() {
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Assert.assertEquals(9999L, Math.round(9999.444));
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}
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@Test
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public void givenDoubleValue_whenMathRoundUsed_thenSameValueReturned() {
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Assert.assertEquals(9999L, Math.round(9999.0));
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}
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@Test
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public void givenDoubleValue_whenMathCeilUsed_thenLongValueReturned() {
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Assert.assertEquals(10000L, Math.ceil(VALUE), 0);
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}
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@Test
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public void givenDoubleValue_whenMathCeilUsed_thenSameValueReturned() {
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Assert.assertEquals(9999L, Math.ceil(9999.0), 0);
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}
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@Test
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public void givenDoubleValue_whenMathCeilUsed_thenDifferentThanRound() {
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Assert.assertEquals(10000L, Math.ceil(9999.444), 0);
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}
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@Test
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public void givenDoubleValue_whenMathFloorUsed_thenLongValueReturned() {
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Assert.assertEquals(9999L, Math.floor(VALUE), 0);
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}
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@Test
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public void givenDoubleValue_whenMathFloorUsed_thenSameValueReturned() {
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Assert.assertEquals(9999L, Math.floor(9999.0), 0);
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}
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@Test
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public void givenDoubleValue_whenMathFloorUsed_thenDifferentThanCeil() {
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Assert.assertEquals(9999L, Math.floor(9999.444), 0);
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}
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@Test
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public void givenDoubleValue_whenTypeCasted_thenLongValueReturned() {
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Assert.assertEquals(9999L, (long) VALUE);
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}
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}
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