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import junit.framework.TestCase;
public class TestLargest extends TestCase {
public TestLargest(String name) {
super(name);
}
public void testOrder() {
assertEquals(9, Largest.largest(new int[] { 9, 8, 7 }));
assertEquals(9, Largest.largest(new int[] { 8, 9, 7 }));
assertEquals(9, Largest.largest(new int[] { 7, 8, 9 }));
}
public void testEmpty() {
try {
Largest.largest(new int[] {});
fail("Should have thrown an exception");
} catch (RuntimeException e) {
assertTrue(true);
}
}
public void testOrder2() {
int[] arr = new int[3];
arr[0] = 8;
arr[1] = 9;
arr[2] = 7;
assertEquals(9, Largest.largest(arr));
}
}
class Largest {
public static int largest(int[] list) {
int index, max = Integer.MAX_VALUE;
if (list.length == 0) {
throw new RuntimeException("Empty list");
}
for (index = 0; index < list.length - 1; index++) {
if (list[index] > max) {
max = list[index];
}
}
return max;
}
}
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