import version 6.1.2

Author: ChrisMayfield

ap01/Series.java

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+/**
+ * Example method from Chapter 6.
+ */
+public class Series {
+
+    public static int fibonacci(int n) {
+        if (n == 1 || n == 2) {
+            return 1;
+        }
+        return fibonacci(n - 1) + fibonacci(n - 2);
+    }
+
+    public static void main(String[] args) {
+        if (fibonacci(1) != 1) {
+            System.err.println("fibonacci(1) is incorrect");
+        }
+        if (fibonacci(2) != 1) {
+            System.err.println("fibonacci(2) is incorrect");
+        }
+        if (fibonacci(3) != 2) {
+            System.err.println("fibonacci(3) is incorrect");
+        }
+    }
+
+}

ap01/SeriesTest.java

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+import junit.framework.TestCase;
+
+/**
+ * Example JUnit test from Appendix A.
+ */
+public class SeriesTest extends TestCase {
+
+    public void testFibonacci() {
+        assertEquals(1, Series.fibonacci(1));
+        assertEquals(1, Series.fibonacci(2));
+        assertEquals(2, Series.fibonacci(3));
+    }
+
+}