Adding tests for String.valueOf(long)

Author: romainbrenguier

regression/strings-smoke-tests/java_value_of_long/test.class

@@ -0,0 +1,8 @@
+CORE
+test.class
+--refine-strings
+^EXIT=10$
+^SIGNAL=0$
+assertion.* file test.java line 11 .* SUCCESS$
+assertion.* file test.java line 16 .* FAILURE$
+--

regression/strings-smoke-tests/java_value_of_long/test.desc

@@ -0,0 +1,17 @@
+public class test
+{
+   public static void main(int i)
+   {
+      long l1=12345678901234L;
+      if(i == 0)
+      {
+          String s = String.valueOf(l1);
+          assert(s.equals("12345678901234"));
+      }
+      else
+      {
+          String s = String.valueOf(-l1);
+          assert(!s.equals("-12345678901234"));
+      }
+   }
+}