Add another test.

RebelTests/CAAnimation+RBLBlockAdditionsSpec.m

@@ -32,7 +32,7 @@ it(@"Should not have a nil delegate", ^{
 	expect(animation.delegate).toNot.beNil();
 });
 
-it(@"should should fire once animation is completed", ^{
+it(@"Should fire once animation is completed", ^{
 	CALayer *layer = [CALayer layer];
 	CABasicAnimation *sampleAnimation = [CABasicAnimation animationWithKeyPath:@"opacity"];
 	__block BOOL fired = NO;
@@ -46,4 +46,10 @@ it(@"should should fire once animation is completed", ^{
 	expect(fired).will.beTruthy();
 });
 
+it(@"Should return nil if no completion block has been set", ^{
+	CAAnimation *animation = [CAAnimation animation];
+	expect(animation.rbl_completionBlock).to.beNil();
+});
+
+
 SpecEnd