How to use testImplicitQualifiedInitializedType method of InferTypeTests class

...87  }88  89  // MARK: - Qualified90  91  func testImplicitQualifiedInitializedType() {92    let input = "Swift.Bool(booleanLiteral: true)"93    XCTAssertEqual(inferType(from: input), "Swift.Bool")94  }95  96  func testImplicitQualifiedInitializedType_method() {97    let input = "Swift.Bool(booleanLiteral: true).map({ true })"98    XCTAssertNil(inferType(from: input))99  }100  101  func testImplicitQualifiedInitializedType_trailingClosureMethod() {102    let input = "Swift.Bool(booleanLiteral: true).map { true }"103    XCTAssertNil(inferType(from: input))104  }105  106  func testImplicitQualifiedInitializedType_property() {107    let input = "Swift.Bool(booleanLiteral: true).property"108    XCTAssertNil(inferType(from: input))109  }110  111  func testExplicitQualifiedInitializedType() {112    let input = "Swift.Bool.init(booleanLiteral: true)"113    XCTAssertEqual(inferType(from: input), "Swift.Bool")114  }115  116  func testExplicitQualifiedInitializedType_method() {117    let input = "Swift.Bool.init(booleanLiteral: true).map({ true })"118    XCTAssertNil(inferType(from: input))119  }120  ...

1import UIKit2class ViewController: UIViewController {3    override func viewDidLoad() {4        super.viewDidLoad()5        let infer = InferTypeTests()6        infer.testImplicitQualifiedInitializedType()7    }8    override func didReceiveMemoryWarning() {9        super.didReceiveMemoryWarning()10    }

1import Foundation2class InferTypeTests {3    func testImplicitQualifiedInitializedType() {4    }5}6import Foundation7class InferTypeTests {8    func testImplicitQualifiedInitializedType() {9    }10}11error: module compiled with Swift 4.0 cannot be imported in Swift 4.0.1: /Users/.../1.swiftmodule/x86_64.swiftmodule