Reproduction for #1161 (#1162)

src/test/java/com/fasterxml/jackson/core/io/BigDecimalParserTest.java

@@ -1,32 +1,64 @@
 package com.fasterxml.jackson.core.io;
 
-public class BigDecimalParserTest extends com.fasterxml.jackson.core.BaseTest {
-    public void testLongStringParse() {
+import java.math.BigDecimal;
+
+public class BigDecimalParserTest extends com.fasterxml.jackson.core.BaseTest
+{
+    public void testLongInvalidStringParse() {
         try {
-            BigDecimalParser.parse(genLongString());
+            BigDecimalParser.parse(genLongInvalidString());
             fail("expected NumberFormatException");
         } catch (NumberFormatException nfe) {
             assertTrue("exception message starts as expected?", nfe.getMessage().startsWith("Value \"AAAAA"));
             assertTrue("exception message value contains truncated", nfe.getMessage().contains("truncated"));
         }
     }
 
-    public void testLongStringFastParse() {
+    public void testLongInvalidStringFastParse() {
         try {
-            BigDecimalParser.parseWithFastParser(genLongString());
+            BigDecimalParser.parseWithFastParser(genLongInvalidString());
             fail("expected NumberFormatException");
         } catch (NumberFormatException nfe) {
             assertTrue("exception message starts as expected?", nfe.getMessage().startsWith("Value \"AAAAA"));
             assertTrue("exception message value contains truncated", nfe.getMessage().contains("truncated"));
         }
     }
 
-    static String genLongString() {
+    public void testLongValidStringParse() {
+        String num = genLongValidString(500);
+        final BigDecimal EXP = new BigDecimal(num);
+
+        // Parse from String first, then char[]
+
+        assertEquals(EXP, BigDecimalParser.parse(num));
+        assertEquals(EXP, BigDecimalParser.parse(num.toCharArray(), 0, num.length()));
+    }
+
+    public void testLongValidStringFastParse() {
+        String num = genLongValidString(500);
+        final BigDecimal EXP = new BigDecimal(num);
+
+        // Parse from String first, then char[]
+        assertEquals(EXP, BigDecimalParser.parseWithFastParser(num));
+        assertEquals(EXP, BigDecimalParser.parseWithFastParser(num.toCharArray(), 0, num.length()));
+    }
+
+    static String genLongInvalidString() {
         final int len = 1500;
         final StringBuilder sb = new StringBuilder(len);
         for (int i = 0; i < len; i++) {
             sb.append("A");
         }
         return sb.toString();
     }
+
+    static String genLongValidString(int len) {
+        final StringBuilder sb = new StringBuilder(len+5);
+        sb.append("0.");
+        for (int i = 0; i < len; i++) {
+            sb.append('0');
+        }
+        sb.append('1');
+        return sb.toString();
+    }
 }