Add tests in SearchInARowAndColWiseSortedMatrix (#5675)

Author: Hardvan

DIRECTORY.md

@@ -1015,6 +1015,7 @@
             * [RabinKarpAlgorithmTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/searches/RabinKarpAlgorithmTest.java)
             * [RecursiveBinarySearchTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/searches/RecursiveBinarySearchTest.java)
             * [RowColumnWiseSorted2dArrayBinarySearchTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/searches/RowColumnWiseSorted2dArrayBinarySearchTest.java)
+            * [SearchInARowAndColWiseSortedMatrixTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/searches/SearchInARowAndColWiseSortedMatrixTest.java)
             * [SortOrderAgnosticBinarySearchTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/searches/SortOrderAgnosticBinarySearchTest.java)
             * [SquareRootBinarySearchTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/searches/SquareRootBinarySearchTest.java)
             * [TestSearchInARowAndColWiseSortedMatrix](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/searches/TestSearchInARowAndColWiseSortedMatrix.java)

src/main/java/com/thealgorithms/searches/SearchInARowAndColWiseSortedMatrix.java

@@ -8,7 +8,6 @@ public class SearchInARowAndColWiseSortedMatrix {
      * @param value  Key being searched for
      * @author Sadiul Hakim : https://github.com/sadiul-hakim
      */
-
     public int[] search(int[][] matrix, int value) {
         int n = matrix.length;
         // This variable iterates over rows

src/test/java/com/thealgorithms/searches/SearchInARowAndColWiseSortedMatrixTest.java

@@ -0,0 +1,66 @@
+package com.thealgorithms.searches;
+
+import static org.junit.jupiter.api.Assertions.assertArrayEquals;
+
+import org.junit.jupiter.api.Test;
+
+class SearchInARowAndColWiseSortedMatrixTest {
+
+    private final SearchInARowAndColWiseSortedMatrix searcher = new SearchInARowAndColWiseSortedMatrix();
+
+    @Test
+    void testSearchValueExistsInMatrix() {
+        int[][] matrix = {{10, 20, 30, 40}, {15, 25, 35, 45}, {27, 29, 37, 48}, {32, 33, 39, 50}};
+        int value = 29;
+        int[] expected = {2, 1}; // Row 2, Column 1
+        assertArrayEquals(expected, searcher.search(matrix, value), "Value should be found in the matrix");
+    }
+
+    @Test
+    void testSearchValueNotExistsInMatrix() {
+        int[][] matrix = {{10, 20, 30, 40}, {15, 25, 35, 45}, {27, 29, 37, 48}, {32, 33, 39, 50}};
+        int value = 100;
+        int[] expected = {-1, -1}; // Not found
+        assertArrayEquals(expected, searcher.search(matrix, value), "Value should not be found in the matrix");
+    }
+
+    @Test
+    void testSearchInEmptyMatrix() {
+        int[][] matrix = {};
+        int value = 5;
+        int[] expected = {-1, -1}; // Not found
+        assertArrayEquals(expected, searcher.search(matrix, value), "Should return {-1, -1} for empty matrix");
+    }
+
+    @Test
+    void testSearchInSingleElementMatrixFound() {
+        int[][] matrix = {{5}};
+        int value = 5;
+        int[] expected = {0, 0}; // Found at (0,0)
+        assertArrayEquals(expected, searcher.search(matrix, value), "Value should be found in single element matrix");
+    }
+
+    @Test
+    void testSearchInSingleElementMatrixNotFound() {
+        int[][] matrix = {{10}};
+        int value = 5;
+        int[] expected = {-1, -1}; // Not found
+        assertArrayEquals(expected, searcher.search(matrix, value), "Should return {-1, -1} for value not found in single element matrix");
+    }
+
+    @Test
+    void testSearchInRowWiseSortedMatrix() {
+        int[][] matrix = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}};
+        int value = 6;
+        int[] expected = {1, 2}; // Found at (1, 2)
+        assertArrayEquals(expected, searcher.search(matrix, value), "Value should be found in the row-wise sorted matrix");
+    }
+
+    @Test
+    void testSearchInColWiseSortedMatrix() {
+        int[][] matrix = {{1, 4, 7}, {2, 5, 8}, {3, 6, 9}};
+        int value = 5;
+        int[] expected = {1, 1}; // Found at (1, 1)
+        assertArrayEquals(expected, searcher.search(matrix, value), "Value should be found in the column-wise sorted matrix");
+    }
+}