1 files changed, 101 insertions, 0 deletions
diff --git a/libcxx/test/std/input.output/iostreams.base/ios/basic.ios.members/imbue.pass.cpp b/libcxx/test/std/input.output/iostreams.base/ios/basic.ios.members/imbue.pass.cpp
new file mode 100644
index 00000000000..6d4ce5f577f
--- /dev/null
+++ b/libcxx/test/std/input.output/iostreams.base/ios/basic.ios.members/imbue.pass.cpp
@@ -0,0 +1,101 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// template <class charT, class traits> class basic_ios
+
+// locale imbue(const locale& loc);
+
+#include <ios>
+#include <streambuf>
+#include <cassert>
+
+#include "platform_support.h" // locale name macros
+
+struct testbuf
+    : public std::streambuf
+{
+};
+
+bool f1_called = false;
+bool f2_called = false;
+bool f3_called = false;
+
+void f1(std::ios_base::event ev, std::ios_base& stream, int index)
+{
+    if (ev == std::ios_base::imbue_event)
+    {
+        assert(!f1_called);
+        assert( f2_called);
+        assert( f3_called);
+        assert(stream.getloc().name() == LOCALE_en_US_UTF_8);
+        assert(index == 4);
+        f1_called = true;
+    }
+}
+
+void f2(std::ios_base::event ev, std::ios_base& stream, int index)
+{
+    if (ev == std::ios_base::imbue_event)
+    {
+        assert(!f1_called);
+        assert(!f2_called);
+        assert( f3_called);
+        assert(stream.getloc().name() == LOCALE_en_US_UTF_8);
+        assert(index == 5);
+        f2_called = true;
+    }
+}
+
+void f3(std::ios_base::event ev, std::ios_base& stream, int index)
+{
+    if (ev == std::ios_base::imbue_event)
+    {
+        assert(!f1_called);
+        assert(!f2_called);
+        assert(!f3_called);
+        assert(stream.getloc().name() == LOCALE_en_US_UTF_8);
+        assert(index == 6);
+        f3_called = true;
+    }
+}
+
+int main()
+{
+    {
+        std::ios ios(0);
+        ios.register_callback(f1, 4);
+        ios.register_callback(f2, 5);
+        ios.register_callback(f3, 6);
+        std::locale l = ios.imbue(std::locale(LOCALE_en_US_UTF_8));
+        assert(l.name() == std::string("C"));
+        assert(ios.getloc().name() == std::string(LOCALE_en_US_UTF_8));
+        assert(f1_called);
+        assert(f2_called);
+        assert(f3_called);
+    }
+    f1_called = false;
+    f2_called = false;
+    f3_called = false;
+    {
+        testbuf sb;
+        std::ios ios(&sb);
+        ios.register_callback(f1, 4);
+        ios.register_callback(f2, 5);
+        ios.register_callback(f3, 6);
+        std::locale l = ios.imbue(std::locale(LOCALE_en_US_UTF_8));
+        assert(l.name() == std::string("C"));
+        assert(ios.getloc().name() == std::string(LOCALE_en_US_UTF_8));
+        assert(sb.getloc().name() == std::string(LOCALE_en_US_UTF_8));
+        assert(f1_called);
+        assert(f2_called);
+        assert(f3_called);
+    }
+}