1 files changed, 52 insertions, 1 deletions
diff --git a/test/std/containers/sequences/deque/deque.cons/assign_iter_iter.pass.cpp b/test/std/containers/sequences/deque/deque.cons/assign_iter_iter.pass.cpp
index f06067786..940d4e8d6 100644
--- a/test/std/containers/sequences/deque/deque.cons/assign_iter_iter.pass.cpp
+++ b/test/std/containers/sequences/deque/deque.cons/assign_iter_iter.pass.cpp
@@ -19,6 +19,9 @@
 #include "test_macros.h"
 #include "test_iterators.h"
 #include "min_allocator.h"
+#if TEST_STD_VER >= 11
+#include "emplace_constructible.h"
+#endif
 
 template <class C>
 C
@@ -80,7 +83,7 @@ testNI(int start, int N, int M)
     testI(c1, c2);
 }
 
-int main()
+void basic_test()
 {
     {
     int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
@@ -103,3 +106,51 @@ int main()
     }
 #endif
 }
+
+void test_emplacable_concept() {
+#if TEST_STD_VER >= 11
+  int arr1[] = {42};
+  int arr2[] = {1, 101, 42};
+  {
+    using T = EmplaceConstructibleMoveableAndAssignable<int>;
+    using It = random_access_iterator<int*>;
+    {
+      std::deque<T> v;
+      v.assign(It(arr1), It(std::end(arr1)));
+      assert(v[0].value == 42);
+    }
+    {
+      std::deque<T> v;
+      v.assign(It(arr2), It(std::end(arr2)));
+      assert(v[0].value == 1);
+      assert(v[1].value == 101);
+      assert(v[2].value == 42);
+    }
+  }
+  {
+    using T = EmplaceConstructibleMoveableAndAssignable<int>;
+    using It = input_iterator<int*>;
+    {
+      std::deque<T> v;
+      v.assign(It(arr1), It(std::end(arr1)));
+      assert(v[0].copied == 0);
+      assert(v[0].value == 42);
+    }
+    {
+      std::deque<T> v;
+      v.assign(It(arr2), It(std::end(arr2)));
+      //assert(v[0].copied == 0);
+      assert(v[0].value == 1);
+      //assert(v[1].copied == 0);
+      assert(v[1].value == 101);
+      assert(v[2].copied == 0);
+      assert(v[2].value == 42);
+    }
+  }
+#endif
+}
+
+int main() {
+  basic_test();
+  test_emplacable_concept();
+}