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kotlinlang

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Hey everyone! What could be causing the error in this code?

Your class-declaration is missing the constructor, as the error-message explains (only the location with line 7 is misleading, the compiler misses the constructor only after finding the next symbol after that, which happens to be the `@Test`).
Actually, it should be
```class Program1Tests() {```

Oh, thanks! But I believe it's possible to omit defining a constructor, right?

Yes, you are right, the constructor is not needed here.
I think your project-setup is wrong, you should check against this instructions:
<https://kotlinlang.org/docs/jvm-test-using-junit.html>
I guess, since the type `kotlin.test.Test` is only a typealias for the actual Test-annotation for different testing frameworks, the error comes from not finding any implementing testing framework:
<https://kotlinlang.org/api/core/kotlin-test/kotlin.test/-test/>