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// RUN: %target-run-simple-swift(-I %S/Inputs -Xfrontend -enable-experimental-cxx-interop)
//
// REQUIRES: executable_test
import CopyConstructors
import StdlibUnittest
var CXXCopyConstructorTestSuite = TestSuite("CXX Copy Constructor")
// It doesn't really matter how many copies were made (as long as it's at least
// one). What we really want to be checking is that the correct copy constructor
// was eventually called.
CXXCopyConstructorTestSuite.test("Basic object with custom copy constructor") {
// Make sure we don't inline this function. We should copy "userCC" into the
// two tuple elements (in the return address). If we inline this function, it
// would allow Swift to put "userCC" directly into "expectTrue" which would
// eliminate the copy.
@inline(never)
func createHasUserProvidedCopyConstructor() -> (HasUserProvidedCopyConstructor, HasUserProvidedCopyConstructor) {
let userCC = HasUserProvidedCopyConstructor(0)
return (userCC, userCC)
}
let result = createHasUserProvidedCopyConstructor()
expectTrue(result.0.numCopies + result.1.numCopies > 0)
}
CXXCopyConstructorTestSuite.test("Implicit copy constructor, member with user-defined copy constructor") {
@inline(never)
func createTypeWithNonTrivialImplicitCopyConstructor() -> (HasNonTrivialImplicitCopyConstructor, HasNonTrivialImplicitCopyConstructor) {
let implicit = HasNonTrivialImplicitCopyConstructor()
return (implicit, implicit)
}
let result = createTypeWithNonTrivialImplicitCopyConstructor()
expectTrue(result.0.box.numCopies + result.1.box.numCopies > 0)
}
CXXCopyConstructorTestSuite.test("Default copy constructor, member with user-defined copy constructor") {
@inline(never)
func createTypeWithNonTrivialDefaultCopyConstructor() -> (HasNonTrivialDefaultCopyConstructor, HasNonTrivialDefaultCopyConstructor) {
let def = HasNonTrivialDefaultCopyConstructor()
return (def, def)
}
let result = createTypeWithNonTrivialDefaultCopyConstructor()
expectTrue(result.0.box.numCopies + result.1.box.numCopies > 0)
}
runAllTests()
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