Added tests for xxx.size() and xxx.empty() for all the sequence containers

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@318244 91177308-0d34-0410-b5e6-96231b3b80d8

test/std/containers/sequences/vector.bool/empty.pass.cpp

@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// class vector
+
+// bool empty() const noexcept;
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main()
+{
+    {
+    typedef std::vector<bool> C;
+    C c;
+    ASSERT_NOEXCEPT(c.empty());
+    assert(c.empty());
+    c.push_back(false);
+    assert(!c.empty());
+    c.clear();
+    assert(c.empty());
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::vector<bool, min_allocator<bool>> C;
+    C c;
+    ASSERT_NOEXCEPT(c.empty());
+    assert(c.empty());
+    c.push_back(false);
+    assert(!c.empty());
+    c.clear();
+    assert(c.empty());
+    }
+#endif
+}