JUnit

DEV2.3/TP02/Ex2/Largest.java

@@ -0,0 +1,20 @@
+public class Largest {
+ 
+  /**
+  * Return the largest element in a list.
+  *
+  * @param list A list of integers
+  * @return The largest number in the given list
+  * @throws NullPointerException si le tableau est null
+  */
+  public static int largest(int[] list) {
+    int max = list[0];
+
+    for (int index = 0; index <= list.length-1; index++) {
+      if (list[index] > max) {
+        max = list[index];
+      }
+    }
+    return max;
+  }
+}

DEV2.3/TP02/Ex2/TestLargest.java

@@ -0,0 +1,46 @@
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+import org.junit.Test;
+import java.util.Arrays;
+ 
+public class TestLargest {
+ 
+  @Test
+  public void testSimple() {
+    assertEquals(9, Largest.largest(new int[] {9,8,7}));
+  }
+
+  @Test(expected = ArrayIndexOutOfBoundsException.class)
+  public void testTableauVide() {
+    Largest.largest(new int[] {});
+  }
+
+  @Test
+  public void testFonctionCorrecte() {
+    int[] t1 = {5, 4, 8, 1, 4};
+    int[] t2 = {15, 4, 8, 49, 5, 89};
+    int[] t3 = {4, -5, 8, 9, 4};
+
+    int maxt1 = Largest.largest(t1);
+    int maxt2 = Largest.largest(t2);
+    int maxt3 = Largest.largest(t3);
+    Arrays.sort(t1);
+    Arrays.sort(t2);
+    Arrays.sort(t3);
+
+    assertEquals(t1[t1.length-1], maxt1);
+    assertEquals(t2[t2.length-1], maxt2);
+    assertEquals(t3[t3.length-1], maxt3);
+  }
+
+  @Test 
+  public void testTableauNegatif() {
+    assertEquals(-4, Largest.largest(new int[] {-15, -5, -4, -58}));
+  }
+
+  @Test(expected = NullPointerException.class)
+  public void testTableauNull() {
+    int[] t = null;
+    Largest.largest(t);
+  }
+}