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README.md

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+# RepoBee demo task-2
+
+Welcome to the instructions for task-2! Complete the exercises listed below and
+submit the results by pushing them to your repository.
+
+### Exercise 1
+
+Run the tests in `FiboTest.java` with `JUnit4` and ensure that they both fail.
+Then add another test that tests that the thousandth number is correctly
+generated, run the tests again, and ensure that they all still fail.
+
+### Exercise 2
+
+Implement the `next()` method in `Fibo.java` such that it returns Fibonacci
+numbers in the correct sequence. Make sure that the tests pass, including the
+one you added in the previous exercise.

src/Fibo.java

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+/**
+ * Class for calculating Fibonacci numbers.
+ */
+public class Fibo {
+    private long prev;
+    private long current;
+
+    public Fibo() {
+        prev = 0;
+        current = 1;
+    }
+
+    /**
+     * Generate the next Fibonacci number.
+     */
+    public long next() {
+        return 0;
+    }
+}

src/FiboTest.java

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+import org.junit.Test;
+import org.junit.Before;
+import static org.junit.Assert.*;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.CoreMatchers.*;
+
+public class FiboTest {
+    @Test
+    public void correctlyGeneratesFirst10Numbers() {
+        Fibo f = new Fibo();
+        long[] expected = {0, 1, 1, 2, 3, 5, 8, 13, 21, 34};
+        long[] actual = new long[10];
+
+        for (int i = 0; i < 10; i++) {
+            actual[i] = f.next();
+        }
+
+        assertThat(actual, equalTo(expected));
+    }
+
+    @Test
+    public void correctlyGeneratesFiftiethNumber() {
+        // note that the first number is counted as the 0th
+        Fibo f = new Fibo();
+
+        for (int i = 0; i < 50; i++) {
+            f.next();
+        }
+
+        assertThat(f.next(), equalTo(12586269025l));
+    }
+}