Add simple tests for `InvokeMethod2`

[magnus-madsen]

In combination with #7769

• [ ] Add tests for calling methods on BigInt (Test.Exp.InvokeMethod2.flix)
• [ ] Add tests for calling methods on BigDecimal (Test.Exp.InvokeMethod2.flix)
• [ ] Add tests for calling methods on String (Test.Exp.InvokeMethod2.flix)
• [ ] Add tests for calling zero argument methods. (Test.Exp.InvokeMethod2.ZeroArg.flix)
• [ ] Add tests for method chaining foo.bar().baz() (Test.Exp.InvokeMethod2.Chaining.flix)
• [ ] Add tests for calling methods overloaded by arity: (Test.Exp.InvokeMethod2.Overload.Arity.flix)
  • [ ] Add tests for calling each String.indexOf overload
  • [ ] Add tests for calling each String.lastIndexOf overload
  • [ ] Add tests for calling each String.replace overload
  • [ ] Add tests for calling each String.split overload
• [ ] Add tests for calling methods overloaded by types: (Test.Exp.InvokeMethod2.Overload.Types.flix)
  • [ ] Add tests for calling each String.valueOf overload
  • [ ] Add tests for calling each String.replace overload
• [ ] Add tests for calling methods with subtyping: (Test.Exp.InvokeMethod2.Overload.Subtypes.flix)
  • [ ] Add tests for calling String.contains
  • [ ] Add tests for calling String.equals
• [ ] Add tests for calling methods with subtyping on Null (Test.Exp.InvokeMethod2.Overload.Null.flix)
• [ ] Add negative tests for AmbiguousMethod and MethodNotFound to TestTyper (at least 3 for each error)

I suggest to use multiple names spaces as outlined in parens above.

[magnus-madsen]

CC @chanattan

[magnus-madsen]

@chanattan It would be good to have some chaining tests where the return type is different.

[chanattan]

@magnus-madsen valueOf is a static method and is not supported by invokeMethod2 but will be with invokeStaticMethod2. String.replace has no overloading by arity, I moved the tests to type overload. split can not be supported yet. The rest is being worked on.

[magnus-madsen]

@magnus-madsen valueOf is a static method and is not supported by invokeMethod2 but will be with invokeStaticMethod2. String.replace has no overloading by arity, I moved the tests to type overload. split can not be supported yet. The rest is being worked on.

Right, so some of the tests may need to wait for invoke static. But you can also try find other methods that fit the bill and test with those.