Add unit tests for SquareRootWithBabylonianMethod

Adds JUnit 5 unit tests for `SquareRootWithBabylonianMethod`, which previously had no test coverage. Tests cover perfect squares, non-perfect squares, and a range of values from 1 to 1000, comparing the result against Math.sqrt with a small delta.

#HSFDPMUW

Author: JulianGStudium

src/test/java/com/thealgorithms/maths/SquareRootWithBabylonianMethodTest.java

@@ -0,0 +1,33 @@
+package com.thealgorithms.maths;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import org.junit.jupiter.api.Test;
+
+public class SquareRootWithBabylonianMethodTest {
+
+    private static final float DELTA = 1e-3f;
+
+    @Test
+    void testPerfectSquares() {
+        assertEquals(1.0f, SquareRootWithBabylonianMethod.squareRoot(1.0f), DELTA);
+        assertEquals(2.0f, SquareRootWithBabylonianMethod.squareRoot(4.0f), DELTA);
+        assertEquals(3.0f, SquareRootWithBabylonianMethod.squareRoot(9.0f), DELTA);
+        assertEquals(5.0f, SquareRootWithBabylonianMethod.squareRoot(25.0f), DELTA);
+        assertEquals(12.0f, SquareRootWithBabylonianMethod.squareRoot(144.0f), DELTA);
+    }
+
+    @Test
+    void testNonPerfectSquares() {
+        assertEquals((float) Math.sqrt(2.0), SquareRootWithBabylonianMethod.squareRoot(2.0f), DELTA);
+        assertEquals((float) Math.sqrt(50.0), SquareRootWithBabylonianMethod.squareRoot(50.0f), DELTA);
+        assertEquals((float) Math.sqrt(99.0), SquareRootWithBabylonianMethod.squareRoot(99.0f), DELTA);
+    }
+
+    @Test
+    void testMatchesMathSqrtForRangeOfValues() {
+        for (float num = 1.0f; num <= 1000.0f; num += 1.0f) {
+            assertEquals((float) Math.sqrt(num), SquareRootWithBabylonianMethod.squareRoot(num), DELTA);
+        }
+    }
+}