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Enhance docs, add more tests in ArrayCombination (#5842)

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This commit is contained in:
Hardik Pawar
2024-10-26 14:20:22 +05:30
committed by GitHub
parent 788f4d8b28
commit 009c2b38af
2 changed files with 51 additions and 21 deletions
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54
src/test/java/com/thealgorithms/bitmanipulation/IsPowerTwoTest.java
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@@ -3,7 +3,10 @@ package com.thealgorithms.bitmanipulation;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertTrue;
import org.junit.jupiter.api.Test;
import java.util.stream.Stream;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.Arguments;
import org.junit.jupiter.params.provider.MethodSource;
/**
* Test case for IsPowerTwo class
@@ -11,25 +14,38 @@ import org.junit.jupiter.api.Test;
*/
public class IsPowerTwoTest {
@Test
public void testIsPowerTwo() {
// test some positive powers of 2
assertTrue(IsPowerTwo.isPowerTwo(1));
assertTrue(IsPowerTwo.isPowerTwo(2));
assertTrue(IsPowerTwo.isPowerTwo(4));
assertTrue(IsPowerTwo.isPowerTwo(16));
assertTrue(IsPowerTwo.isPowerTwo(1024));
// test some negative numbers
assertFalse(IsPowerTwo.isPowerTwo(-1));
assertFalse(IsPowerTwo.isPowerTwo(-2));
assertFalse(IsPowerTwo.isPowerTwo(-4));
@ParameterizedTest
@MethodSource("provideNumbersForPowerTwo")
public void testIsPowerTwo(int number, boolean expected) {
if (expected) {
assertTrue(IsPowerTwo.isPowerTwo(number));
} else {
assertFalse(IsPowerTwo.isPowerTwo(number));
}
}
// test some numbers that are not powers of 2
assertFalse(IsPowerTwo.isPowerTwo(0));
assertFalse(IsPowerTwo.isPowerTwo(3));
assertFalse(IsPowerTwo.isPowerTwo(5));
assertFalse(IsPowerTwo.isPowerTwo(15));
assertFalse(IsPowerTwo.isPowerTwo(1000));
private static Stream<Arguments> provideNumbersForPowerTwo() {
return Stream.of(Arguments.of(1, Boolean.TRUE), // 2^0
Arguments.of(2, Boolean.TRUE), // 2^1
Arguments.of(4, Boolean.TRUE), // 2^2
Arguments.of(8, Boolean.TRUE), // 2^3
Arguments.of(16, Boolean.TRUE), // 2^4
Arguments.of(32, Boolean.TRUE), // 2^5
Arguments.of(64, Boolean.TRUE), // 2^6
Arguments.of(128, Boolean.TRUE), // 2^7
Arguments.of(256, Boolean.TRUE), // 2^8
Arguments.of(1024, Boolean.TRUE), // 2^10
Arguments.of(0, Boolean.FALSE), // 0 is not a power of two
Arguments.of(-1, Boolean.FALSE), // Negative number
Arguments.of(-2, Boolean.FALSE), // Negative number
Arguments.of(-4, Boolean.FALSE), // Negative number
Arguments.of(3, Boolean.FALSE), // 3 is not a power of two
Arguments.of(5, Boolean.FALSE), // 5 is not a power of two
Arguments.of(6, Boolean.FALSE), // 6 is not a power of two
Arguments.of(15, Boolean.FALSE), // 15 is not a power of two
Arguments.of(1000, Boolean.FALSE), // 1000 is not a power of two
Arguments.of(1023, Boolean.FALSE) // 1023 is not a power of two
);
}
}