| // RUN: %target-swift-frontend(mock-sdk: %clang-importer-sdk) -typecheck %s -verify |
| |
| // REQUIRES: objc_interop |
| |
| import Foundation |
| |
| func testDictionary() { |
| // -[NSDictionary init] returns non-nil. |
| var dictNonOpt = NSDictionary() |
| _ = dictNonOpt! // expected-error {{cannot force unwrap value of non-optional type 'NSDictionary'}} |
| } |
| |
| func testString() throws { |
| // Optional |
| let stringOpt = NSString(path: "blah", encoding: 0) |
| _ = stringOpt as NSString // expected-error{{'NSString?' is not convertible to 'NSString'; did you mean to use 'as!' to force downcast?}} |
| |
| // Implicitly unwrapped optional |
| let stringIUO = NSString(path: "blah") |
| if stringIUO == nil { } |
| _ = stringIUO as NSString? |
| let _: NSString = NSString(path: "blah") |
| } |
| |
| func testHive() { |
| let hiveIUO = Hive() |
| if hiveIUO == nil { } |
| _ = hiveIUO as Hive? |
| let _: Hive = Hive() |
| } |
