ecf8bd76cc
* BAEL-3027 binary number arithmetic operations * BAEL-3127 updated the unit test case names * added unit test cases for built-in java functions * updated function name * BAEL-3127 updated unit test case names * BAEL-3127 removed comments from code
74 lines
2.3 KiB
Java
74 lines
2.3 KiB
Java
package com.baeldung.binarynumbers;
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import static org.junit.Assert.assertEquals;
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import org.junit.Test;
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public class BinaryNumbersUnitTest {
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private BinaryNumbers binaryNumbers = new BinaryNumbers();
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@Test
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public void given_decimalNumber_then_returnBinaryNumber() {
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assertEquals(Integer.valueOf(1000), binaryNumbers.convertDecimalToBinary(8));
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assertEquals(Integer.valueOf(10100), binaryNumbers.convertDecimalToBinary(20));
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}
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@Test
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public void given_decimalNumber_then_convertToBinaryNumber() {
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assertEquals("1000", Integer.toBinaryString(8));
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assertEquals("10100", Integer.toBinaryString(20));
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}
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@Test
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public void given_binaryNumber_then_ConvertToDecimalNumber() {
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assertEquals(8, Integer.parseInt("1000", 2));
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assertEquals(20, Integer.parseInt("10100", 2));
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}
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@Test
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public void given_binaryNumber_then_returnDecimalNumber() {
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assertEquals(Integer.valueOf(8), binaryNumbers.convertBinaryToDecimal(1000));
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assertEquals(Integer.valueOf(20), binaryNumbers.convertBinaryToDecimal(10100));
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}
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@Test
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public void given_twoBinaryNumber_then_returnAddition() {
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// adding 4 and 10
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assertEquals(Integer.valueOf(1110), binaryNumbers.addBinaryNumber(100, 1010));
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// adding 26 and 14
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assertEquals(Integer.valueOf(101000), binaryNumbers.addBinaryNumber(11010, 1110));
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}
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@Test
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public void given_twoBinaryNumber_then_returnSubtraction() {
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// subtracting 16 from 25
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assertEquals(Integer.valueOf(1001), binaryNumbers.substractBinaryNumber(11001, 10000));
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// subtracting 29 from 16, the output here is negative
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assertEquals(Integer.valueOf(1101), binaryNumbers.substractBinaryNumber(10000, 11101));
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}
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@Test
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public void given_binaryLiteral_thenReturnDecimalValue() {
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byte five = 0b101;
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assertEquals((byte) 5, five);
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short three = 0b11;
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assertEquals((short) 3, three);
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int nine = 0B1001;
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assertEquals(9, nine);
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long twentyNine = 0B11101;
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assertEquals(29, twentyNine);
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int minusThirtySeven = -0B100101;
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assertEquals(-37, minusThirtySeven);
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}
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}
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