Fix or move tests with non-standard assumptions

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@302862 91177308-0d34-0410-b5e6-96231b3b80d8

test/libcxx/thread/thread.threads/thread.thread.this/sleep_for.pass.cpp

@@ -35,7 +35,6 @@
 
 void sig_action(int) {}
 
-#include <iostream>
 int main()
 {
     int ec;

test/libcxx/utilities/template.bitset/includes.pass.cpp

@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// test that <bitset> includes <cstddef>, <string>, <stdexcept> and <iosfwd>
+
+#include <bitset>
+
+#ifndef _LIBCPP_CSTDDEF
+#error <cstddef> has not been included
+#endif
+
+#ifndef _LIBCPP_STRING
+#error <string> has not been included
+#endif
+
+#ifndef _LIBCPP_STDEXCEPT
+#error <stdexcept> has not been included
+#endif
+
+#ifndef _LIBCPP_IOSFWD
+#error <iosfwd> has not been included
+#endif
+
+int main()
+{
+}

test/std/thread/thread.threads/thread.thread.this/sleep_for_tested_elsewhere.pass.cpp

@@ -0,0 +1,22 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// <thread>
+
+// template <class Rep, class Period>
+//   void sleep_for(const chrono::duration<Rep, Period>& rel_time);
+
+// The std::this_thread::sleep_for test requires POSIX specific headers and
+// is therefore non-standard. For this reason the test lives under the 'libcxx'
+// subdirectory.
+
+int main()
+{
+}

test/std/utilities/template.bitset/includes.pass.cpp

@@ -11,22 +11,27 @@
 
 #include <bitset>
 
-#ifndef _LIBCPP_CSTDDEF
+template <class> void test_typedef() {}
-#error <cstddef> has not been included
-#endif
-
-#ifndef _LIBCPP_STRING
-#error <string> has not been included
-#endif
-
-#ifndef _LIBCPP_STDEXCEPT
-#error <stdexcept> has not been included
-#endif
-
-#ifndef _LIBCPP_IOSFWD
-#error <iosfwd> has not been included
-#endif
 
 int main()
 {
+  { // test for <cstddef>
+    std::ptrdiff_t p; ((void)p);
+    std::size_t s; ((void)s);
+    std::nullptr_t np; ((void)np);
+  }
+  { // test for <string>
+    std::string s; ((void)s);
+  }
+  { // test for <stdexcept>
+    std::logic_error le("blah"); ((void)le);
+    std::runtime_error re("blah"); ((void)re);
+  }
+  { // test for <iosfwd>
+    test_typedef<std::ios>();
+    test_typedef<std::wios>();
+    test_typedef<std::istream>();
+    test_typedef<std::ostream>();
+    test_typedef<std::iostream>();
+  }
 }