// RUN: %target-run-simple-swift(-I %S/Inputs/ -Xfrontend -cxx-interoperability-mode=default)
//
// REQUIRES: executable_test

import InheritedLookup
import StdlibUnittest

var InheritedMemberTestSuite = TestSuite("Test if inherited lookup works")

// The compiler handles 
// - let iiiOne = IIIOne()
// - struct Foo { let iiiOne : IIIOne } 
// differently and because of that, by introducing the struct HasOne in this test, 
// the function importBaseMemberDecl is called twice for each pair of parent-child structs. 
// The second time, all the structs have a clone version of the method, 
// which was triggering a "use of ambiguous method" error.
struct HasOne {
  let one: One
  let iOne: IOne
  let iiOne: IIOne
  let iiiOne: IIIOne
}

InheritedMemberTestSuite.test("Regular methods resolve to base classes") {
  // No inheritance (sanity check)
  let one = One()
  expectEqual(one.method(), 1)

  // One level of inheritance
  let iOne = IOne()
  expectEqual(iOne.method(), 1)
  expectEqual(iOne.methodI(), -1)

  // Two levels of inheritance
  let iiOne = IIOne()
  expectEqual(iiOne.method(), 1)
  expectEqual(iiOne.methodI(), -1)
  expectEqual(iiOne.methodII(), -11)

  // Three levels of inheritance
  let iiiOne = IIIOne()
  expectEqual(iiiOne.method(), 1)
  expectEqual(iiiOne.methodI(), -1)
  expectEqual(iiiOne.methodII(), -11)
  expectEqual(iiiOne.methodIII(), -111)
}

InheritedMemberTestSuite.test("Eagerly imported methods resolve to base classes") {
  // No inheritance (sanity check)
  let one = One()
  expectEqual(one[0], 1)

  // One level of inheritance
  let iOne = IOne()
  expectEqual(iOne[0], 1)

  // Two levels of inheritance
  let iiOne = IIOne()
  expectEqual(iiOne[0], 1)

  // Three levels of inheritance
  let iiiOne = IIIOne()
  expectEqual(iiiOne[0], 1)
}

runAllTests()