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-rw-r--r--test/std/thread/futures/futures.tas/futures.task.members/get_future.pass.cpp64
1 files changed, 64 insertions, 0 deletions
diff --git a/test/std/thread/futures/futures.tas/futures.task.members/get_future.pass.cpp b/test/std/thread/futures/futures.tas/futures.task.members/get_future.pass.cpp
new file mode 100644
index 000000000000..13b5db110668
--- /dev/null
+++ b/test/std/thread/futures/futures.tas/futures.task.members/get_future.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: libcpp-has-no-threads
+
+// <future>
+
+// class packaged_task<R(ArgTypes...)>
+
+// future<R> get_future();
+
+#include <future>
+#include <cassert>
+
+class A
+{
+ long data_;
+
+public:
+ explicit A(long i) : data_(i) {}
+
+ long operator()(long i, long j) const {return data_ + i + j;}
+};
+
+int main()
+{
+ {
+ std::packaged_task<double(int, char)> p(A(5));
+ std::future<double> f = p.get_future();
+ p(3, 'a');
+ assert(f.get() == 105.0);
+ }
+ {
+ std::packaged_task<double(int, char)> p(A(5));
+ std::future<double> f = p.get_future();
+ try
+ {
+ f = p.get_future();
+ assert(false);
+ }
+ catch (const std::future_error& e)
+ {
+ assert(e.code() == make_error_code(std::future_errc::future_already_retrieved));
+ }
+ }
+ {
+ std::packaged_task<double(int, char)> p;
+ try
+ {
+ std::future<double> f = p.get_future();
+ assert(false);
+ }
+ catch (const std::future_error& e)
+ {
+ assert(e.code() == make_error_code(std::future_errc::no_state));
+ }
+ }
+}