Xcode - Adding an image to a test?

Question

I'm currently writing tests for a Swift application. During which I need to test processing an image. I'd like to add an example image for testing. From my understanding, which appears to be wrong, I should just be able to drag the image directly into the ProductNameTests directory of Xcode. This adds the image to the target of the tests. Then I try to get the path of the image as such:

let imagePath = NSBundle.mainBundle().pathForResource("example_image", ofType: "jpg")

This, unfortunately, always returns nil. What am I doing wrong? Thanks!

Answer 1

Your problem is, that you search for the image in the main bundle. So at the moment you access the mainBundle where your image doesn't exists, because it's in the test-bundle.

So you need to access another bundle. The bundle where your testclass is nested.

For that, use bundleForClass instead of mainBundle:

//The Bundle for your current class
var bundle = NSBundle(forClass: self.dynamicType)
var path = bundle.pathForResource("example_image", ofType: "jpg")

As you see, you load the NSBundle for your class and you should now be able to access the image. You could also add the image to your main target and use the mainBundle again.