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Merged
merged 3 commits into from
Jul 17, 2025
Merged

testing: improve test coverage ParityCheckTest #6389

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09bb413
testing: improve test coverage ParityCheckTest
alxkm Jul 14, 2025
05af957
Merge branch 'master' into testing/ParityCheckTest
alxkm Jul 17, 2025
bafc0a7
Merge branch 'master' into testing/ParityCheckTest
DenizAltunkapan Jul 17, 2025
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testing: improve test coverage ParityCheckTest
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@alxkm
alxkm committed Jul 14, 2025
commit 09bb4130bfa9be803049b5b4b731e4fbd57f8831
26 changes: 23 additions & 3 deletions src/test/java/com/thealgorithms/bitmanipulation/ParityCheckTest.java
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Expand Up @@ -6,10 +6,30 @@
import org.junit.jupiter.api.Test;

public class ParityCheckTest {
@Test
public void testIsEvenParity() {
assertTrue(ParityCheck.checkParity(0)); // 0 -> 0 ones
assertTrue(ParityCheck.checkParity(3)); // 11 -> 2 ones
assertTrue(ParityCheck.checkParity(5)); // 101 -> 2 ones
assertTrue(ParityCheck.checkParity(10)); // 1010 -> 2 ones
assertTrue(ParityCheck.checkParity(15)); // 1111 -> 4 ones
assertTrue(ParityCheck.checkParity(1023)); // 10 ones
}

@Test
public void testIsOddParity() {
assertTrue(ParityCheck.checkParity(5)); // 101 has 2 ones (even parity)
assertFalse(ParityCheck.checkParity(7)); // 111 has 3 ones (odd parity)
assertFalse(ParityCheck.checkParity(8)); // 1000 has 1 one (odd parity)
assertFalse(ParityCheck.checkParity(1)); // 1 -> 1 one
assertFalse(ParityCheck.checkParity(2)); // 10 -> 1 one
assertFalse(ParityCheck.checkParity(7)); // 111 -> 3 ones
assertFalse(ParityCheck.checkParity(8)); // 1000 -> 1 one
assertFalse(ParityCheck.checkParity(11)); // 1011 -> 3 ones
assertFalse(ParityCheck.checkParity(31)); // 11111 -> 5 ones
}

@Test
public void testLargeNumbers() {
assertTrue(ParityCheck.checkParity(0b10101010)); // 4 ones
assertFalse(ParityCheck.checkParity(0b100000000)); // 1 one
assertTrue(ParityCheck.checkParity(0xAAAAAAAA)); // Alternating bits, 16 ones
}
}
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