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extern/stdcxx/4.2.1/tests/regress/27.stringbuf.members.stdcxx-427.cpp

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+/************************************************************************
+ *
+ * 27.stringbuf.members.stdcxx-427.cpp - test case from STDCXX-427 issue
+ *
+ * $Id: 27.stringbuf.members.stdcxx-427.cpp 550991 2007-06-26 23:58:07Z sebor $
+ *
+ ***************************************************************************
+ *
+ * Licensed to the Apache Software  Foundation (ASF) under one or more
+ * contributor  license agreements.  See  the NOTICE  file distributed
+ * with  this  work  for  additional information  regarding  copyright
+ * ownership.   The ASF  licenses this  file to  you under  the Apache
+ * License, Version  2.0 (the  "License"); you may  not use  this file
+ * except in  compliance with the License.   You may obtain  a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the  License is distributed on an  "AS IS" BASIS,
+ * WITHOUT  WARRANTIES OR CONDITIONS  OF ANY  KIND, either  express or
+ * implied.   See  the License  for  the  specific language  governing
+ * permissions and limitations under the License.
+ * 
+ **************************************************************************/
+
+#include <cassert>
+#include <cstdio>
+#include <sstream>
+
+int main ()
+{
+    struct Buf: std::stringbuf {
+        Buf (std::string s, std::ios::openmode m)
+            : std::stringbuf (s, m) { }
+
+        void setget (int beg, int cur, int end) {
+            setg (eback () + beg, eback () + cur, eback () + end);
+        }
+
+        void setput (int beg, int cur, int end) {
+            setp (pbase () + beg, pbase () + end);
+            pbump (cur);
+        }
+    };
+
+    {
+        Buf buf ("abcde", std::ios::in);
+        buf.setget (1, 2, 4);
+        std::printf ("%s\n", buf.str ().c_str ());
+        assert ("bcd" == buf.str ());
+    }
+    {
+        Buf buf ("abcde", std::ios::out);
+        buf.setput (1, 2, 4);
+        std::printf ("%s\n", buf.str ().c_str ());
+        assert ("bcde" == buf.str ());
+    }
+    {
+        Buf buf ("abcde", std::ios::openmode ());
+        std::printf ("%s\n", buf.str ().c_str ());
+        assert ("" == buf.str ());
+    }
+}