Added tests for 0 and 1 as requested by PR review and tidied up some …

…code formatting

01_fib/jimbotech/ex_fib_test.go

@@ -13,15 +13,14 @@ func TestFib(t *testing.T) {
 
 	for _, val := range fibResults {
 		if r := f(); r != val {
-			t.Fail()
-			t.Logf("Returned value %v does not match %v", r, val)
+			t.Errorf("Returned value %v does not match %v", r, val)
 		}
 	}
 }
 
 func TestMain(t *testing.T) {
-	want := "1\n1\n2\n3\n5\n8\n13\n"
 
+	want := "1\n1\n2\n3\n5\n8\n13\n"
 	var buf bytes.Buffer
 	out = &buf
 	main()
@@ -33,8 +32,8 @@ func TestMain(t *testing.T) {
 }
 
 func TestNeg(t *testing.T) {
-	want := "1\n-1\n2\n-3\n5\n-8\n13\n"
 
+	want := "1\n-1\n2\n-3\n5\n-8\n13\n"
 	var buf bytes.Buffer
 	out = &buf
 	fib(-7)
@@ -44,3 +43,28 @@ func TestNeg(t *testing.T) {
 		t.Errorf("expected %v, got %v", want, result)
 	}
 }
+
+func TestZero(t *testing.T) {
+
+	var buf bytes.Buffer
+	out = &buf
+	fib(0)
+	result := buf.String()
+
+	if len(result) > 0 {
+		t.Errorf("Expected nothing to be printed, got %v", result)
+	}
+}
+
+func TestOne(t *testing.T) {
+
+	want := "1\n"
+	var buf bytes.Buffer
+	out = &buf
+	fib(1)
+	result := buf.String()
+
+	if result != want {
+		t.Errorf("expected %v, got %v", want, result)
+	}
+}