test/java/lang/Long/ParsingTest.java

rev 9925 : 8041972: Add improved parse/format methods for Long/Integer
Contributed-by: redestad

@@ -26,10 +26,12 @@
  * @bug 5017980 6576055
  * @summary Test parsing methods
  * @author Joseph D. Darcy
  */
 
+import sun.misc.SharedSecrets;
+import sun.misc.JavaLangAccess;
 
 /**
  * There are six methods in java.lang.Long which transform strings
  * into a long or Long value:
  *

@@ -41,13 +43,20 @@
  * public static Long valueOf(String s)
  *
  * Besides decode, all the methods and constructor call down into
  * parseLong(String, int) to do the actual work.  Therefore, the
  * behavior of parseLong(String, int) will be tested here.
+ *
+ * Internally, parseLong(String, int, int, int) has been added to
+ * support parsing subsequences without explicit substrings. These will also
+ * be tested here
  */
 
 public class ParsingTest {
+
+    private static JavaLangAccess jla = SharedSecrets.getJavaLangAccess();
+
     public static void main(String... argv) {
         check("+100", +100L);
         check("-100", -100L);
 
         check("+0", 0L);

@@ -70,16 +79,27 @@
         checkFailure("++100");
         checkFailure("--100");
         checkFailure("+-6");
         checkFailure("-+6");
         checkFailure("*100");
+
+        check("test-00000", 0L, 4, 10);
+        check("test-12345", -12345L, 4, 10);
+        check("xx12345yy", 12345L, 2, 7);
+        check("xx123456789012345yy", 123456789012345L, 2, 17);
+
+        checkFailure("+00000", 0, 7);
+        checkFailure("-00000", 0, 7);
+        checkFailure("-00000", 6, 6);
+        checkFailure("-00000", 6, 0);
+        checkFailure("+-6", 0, 3);
     }
 
     private static void check(String val, long expected) {
         long n = Long.parseLong(val);
         if (n != expected)
-            throw new RuntimeException("Long.parsedLong failed. String:" +
+            throw new RuntimeException("Long.parseLong failed. String:" +
                                        val + " Result:" + n);
     }
 
     private static void checkFailure(String val) {
         long n = 0L;

@@ -89,6 +109,24 @@
             throw new RuntimeException();
         } catch (NumberFormatException nfe) {
             ; // Expected
         }
     }
+
+    private static void checkFailure(String val, int start, int end) {
+        long n = 0L;
+        try {
+            n = jla.parseLong(val, 10, start, end);
+            System.err.println("parseLong(" + val + ") incorrectly returned " + n);
+            throw new RuntimeException();
+        } catch (NumberFormatException nfe) {
+            ; // Expected
+        }
+    }
+
+    private static void check(String val, long expected, int start, int end) {
+        long n = jla.parseLong(val, 10, start, end);
+        if (n != expected)
+            throw new RuntimeException("Long.parseLong failed. String:" +
+                    val + " Result:" + n);
+    }
 }