从Swift测试文件中调用Objective-C类

我创建了一个用Swift编写的新测试目标.

如何在我的测试文件中调用实际应用程序的Objective-C类？

我尝试过以下操作.

@testable import MyModule

但是,这似乎只有在所有文件都在Swift中时才有效,而对我来说并非如此.

我已经尝试了其他一些项目设置但是,这些似乎都不起作用.

我错过了一些明显的东西吗？

class MyTests: XCTestCase {

    override func setUp() {
        super.setUp()
        // Put setup code here. This method is called before the invocation of each test method in the class.
    }

    override func tearDown() {
        // Put teardown code here. This method is called after the invocation of each test method in the class.
        super.tearDown()
    }

    func testExample() {
        let vc = HomeViewController() //this line is failing. How do I expose this view controller written in objective c?
        // This is an example of a functional test case.
        // Use XCTAssert and related functions to verify your tests produce the correct results.
    }
}