From 2f2a32b8c2c2b2e602f2744aa48cc33eaa3f692f Mon Sep 17 00:00:00 2001 From: Oleksandr Klymenko Date: Thu, 17 Jul 2025 23:03:24 +0300 Subject: [PATCH] testing: improve test coverage `ParityCheckTest` (#6389) testing: improve test coverage ParityCheckTest Co-authored-by: Deniz Altunkapan <93663085+DenizAltunkapan@users.noreply.github.com> --- .../bitmanipulation/ParityCheckTest.java | 26 ++++++++++++++++--- 1 file changed, 23 insertions(+), 3 deletions(-) diff --git a/src/test/java/com/thealgorithms/bitmanipulation/ParityCheckTest.java b/src/test/java/com/thealgorithms/bitmanipulation/ParityCheckTest.java index 90147a612..1654c8ddf 100644 --- a/src/test/java/com/thealgorithms/bitmanipulation/ParityCheckTest.java +++ b/src/test/java/com/thealgorithms/bitmanipulation/ParityCheckTest.java @@ -6,10 +6,30 @@ import static org.junit.jupiter.api.Assertions.assertTrue; 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 } }