Enhance docs, add more tests in SingleBitOperations (#5860)

src/test/java/com/thealgorithms/bitmanipulation/SingleBitOperationsTest.java

@@ -2,35 +2,60 @@ package com.thealgorithms.bitmanipulation;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
 
-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;
 
-public class SingleBitOperationsTest {
+class SingleBitOperationsTest {
 
-    @Test
-    public void flipBitTest() {
-        assertEquals(1, SingleBitOperations.flipBit(3, 1));
-        assertEquals(11, SingleBitOperations.flipBit(3, 3));
+    @ParameterizedTest
+    @MethodSource("provideFlipBitTestCases")
+    void testFlipBit(int input, int bit, int expected) {
+        assertEquals(expected, SingleBitOperations.flipBit(input, bit));
     }
 
-    @Test
-    public void setBitTest() {
-        assertEquals(5, SingleBitOperations.setBit(4, 0));
-        assertEquals(4, SingleBitOperations.setBit(4, 2));
-        assertEquals(5, SingleBitOperations.setBit(5, 0));
-        assertEquals(14, SingleBitOperations.setBit(10, 2));
-        assertEquals(15, SingleBitOperations.setBit(15, 3));
-        assertEquals(2, SingleBitOperations.setBit(0, 1));
+    private static Stream<Arguments> provideFlipBitTestCases() {
+        return Stream.of(Arguments.of(3, 1, 1), // Binary: 11 -> 01
+            Arguments.of(3, 3, 11) // Binary: 11 -> 1011
+        );
     }
 
-    @Test
-    public void clearBitTest() {
-        assertEquals(5, SingleBitOperations.clearBit(7, 1));
-        assertEquals(5, SingleBitOperations.clearBit(5, 1));
+    @ParameterizedTest
+    @MethodSource("provideSetBitTestCases")
+    void testSetBit(int input, int bit, int expected) {
+        assertEquals(expected, SingleBitOperations.setBit(input, bit));
     }
 
-    @Test
-    public void getBitTest() {
-        assertEquals(0, SingleBitOperations.getBit(6, 0));
-        assertEquals(1, SingleBitOperations.getBit(7, 1));
+    private static Stream<Arguments> provideSetBitTestCases() {
+        return Stream.of(Arguments.of(4, 0, 5), // 100 -> 101
+            Arguments.of(4, 2, 4), // 100 -> 100 (bit already set)
+            Arguments.of(0, 1, 2), // 00 -> 10
+            Arguments.of(10, 2, 14) // 1010 -> 1110
+        );
+    }
+
+    @ParameterizedTest
+    @MethodSource("provideClearBitTestCases")
+    void testClearBit(int input, int bit, int expected) {
+        assertEquals(expected, SingleBitOperations.clearBit(input, bit));
+    }
+
+    private static Stream<Arguments> provideClearBitTestCases() {
+        return Stream.of(Arguments.of(7, 1, 5), // 111 -> 101
+            Arguments.of(5, 1, 5) // 101 -> 101 (bit already cleared)
+        );
+    }
+
+    @ParameterizedTest
+    @MethodSource("provideGetBitTestCases")
+    void testGetBit(int input, int bit, int expected) {
+        assertEquals(expected, SingleBitOperations.getBit(input, bit));
+    }
+
+    private static Stream<Arguments> provideGetBitTestCases() {
+        return Stream.of(Arguments.of(6, 0, 0), // 110 -> Bit 0: 0
+            Arguments.of(7, 1, 1) // 111 -> Bit 1: 1
+        );
     }
 }