Compiler error for nested class with override func - Swift Xcode6 - swift

Question

I have a simple Cocoa Touch Framework project with Swift code only. In my unit test class I want to do mocking so I created a mock class which inherits from the type I want to mock:
func testFirstClassMocking() {
class MockSecondClass: SecondClass {
var mockedResult = "My mocked value"
override func printSecondLogEntry(logEntry: String) -> String {
return mockedResult
}
}
let mock = MockSecondClass()
var firstClass = FirstClass(secondClass: mock)
let result = firstClass.printFirstLogEntry("whatever")
XCTAssertEqual("My mocked value", result);
}
This result in a generic compiler error:
Command /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc failed with exit code 1
Now, when I take the nested class out of the function and nest just in my testing class - everything is great. Code compiles and my unit test runs great. Is class nesting in functions not allowed any more?
My Xcode ver: Version 6.0.1 (6A317)
EDIT: one other thing - if I remove the override of the func - the compiler has no issues. Obviously I need the override func to be able to return a value I need in my unit test when my mock object runs.

Answer 1

I thought you might want to know that the following 'mock' of your mock test is compiling and passing. Let me know if I missed something about your code as it is in your question. If I did not miss anything, however, then the cause of the error is something about your code that did not make into the question. Hope that helps you either find the culprit or reformulate the question:
import XCTest
class FirstClass {
let secondClass: SecondClass
init(secondClass: SecondClass) {
self.secondClass = secondClass
}
func printFirstLogEntry(entry: String) -> String {
var fullLog = self.secondClass.printSecondLogEntry(entry)
return fullLog
}
}
class SecondClass {
func printSecondLogEntry(logEntry: String) -> String {
return logEntry
}
}
class CommandLineTests: XCTestCase {
func testFirstClassMocking() {
class MockSecondClass: SecondClass {
override func printSecondLogEntry(logEntry: String) -> String {
return logEntry
}
}
let mock = MockSecondClass()
var firstClass = FirstClass(secondClass: mock)
let result = firstClass.printFirstLogEntry("whatever")
XCTAssertEqual("whatever", result);
}
}