(0.4.1): Added a Tester File

MatrixExampleTest.java

@@ -0,0 +1,81 @@
+public class MatrixExampleTest {
+
+    public void testMultiplyMatrices_CorrectMultiplication() {
+        int[][] matrix1 = {
+            {1, 2},
+            {3, 4}
+        };
+        int[][] matrix2 = {
+            {5, 6},
+            {7, 8}
+        };
+        int[][] expected = {
+            {19, 22},
+            {43, 50}
+        };
+        int[][] result = MatrixExample.multiplyMatrices(matrix1, matrix2);
+        System.out.println(expected == result);
+    }
+
+    public void testMultiplyMatrices_IdentityMatrix() {
+        int[][] matrix1 = {
+            {1, 0},
+            {0, 1}
+        };
+        int[][] matrix2 = {
+            {9, 8},
+            {7, 6}
+        };
+        int[][] expected = {
+            {9, 8},
+            {7, 6}
+        };
+        int[][] result = MatrixExample.multiplyMatrices(matrix1, matrix2);
+        System.out.println(expected == result);
+    }
+
+    public void testMultiplyMatrices_RectangularMatrices() {
+        int[][] matrix1 = {
+            {2, 3, 4},
+            {1, 0, 0}
+        };
+        int[][] matrix2 = {
+            {0, 1000},
+            {1, 100},
+            {0, 10}
+        };
+        int[][] expected = {
+            {3, 2340},
+            {0, 1000}
+        };
+        int[][] result = MatrixExample.multiplyMatrices(matrix1, matrix2);
+        System.out.println(expected == result);
+    }
+
+
+    public void testGenerateRandomMatrix_SizeAndRange() {
+        int numRows = 5;
+        int numCols = 4;
+        int[][] matrix = MatrixExample.generateRandomMatrix(numRows, numCols);
+        System.out.println(numRows == matrix.length);
+        for (int[] row : matrix) {
+            System.out.println(numCols == row.length);
+            for (int val : row) {
+                System.out.println(val >= 0 && val < 100);
+            }
+        }
+    }
+
+    public void testGenerateRandomMatrix_DifferentSizes() {
+        int[][] matrix = MatrixExample.generateRandomMatrix(1, 1);
+        System.out.println(matrix[0][0]);
+
+        matrix = MatrixExample.generateRandomMatrix(3, 2);
+        System.out.println(matrix.toString());
+    }
+
+    public void testGenerateRandomMatrix_ZeroSize() {
+        int[][] matrix = MatrixExample.generateRandomMatrix(0, 0);
+        System.out.println(matrix.length);
+    }
+}