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kotlinlang

Could we use contracts to help compiler realize `x` is not null in this case? Perhaps a specific `shouldNotBeNull` matcher required?
```var x: String? = "hello"
x shouldNotBe null
x!!.substring(2) shouldBe "he" // !! should not be necessary, since previous assertion checks that it is not null```

I think there is a `x.shouldNotBeNull()`  in place that does what you are searching for :slightly_smiling_face:

Ahh.. of course.. for some reason I looked for it with a space after `x`, so it would only find infix versions.. :man-facepalming: