Add a failing test for #216 (and #207)

Author: cowtowncoder

src/test/java/com/fasterxml/jackson/core/sym/SymbolsViaParserTest.java

@@ -1,5 +1,6 @@
 package com.fasterxml.jackson.core.sym;
 
+import java.io.ByteArrayInputStream;
 import java.io.IOException;
 import java.util.HashSet;
 
@@ -12,28 +13,39 @@ public class SymbolsViaParserTest
     extends com.fasterxml.jackson.core.BaseTest
 {
     // for [jackson-core#213]
-    public void test17CharSymbols() throws Exception
-    {
+    public void test17CharSymbols() throws Exception {
         _test17Chars(false);
     }
 
     // for [jackson-core#213]
-    public void test17ByteSymbols() throws Exception
-    {
+    public void test17ByteSymbols() throws Exception {
         _test17Chars(true);
     }
 
+    // for [jackson-core#216]
+    public void testSymbolTableExpansionChars() throws Exception {
+        _testSymbolTableExpansion(false);
+    }
+
+    // for [jackson-core#216]
+    public void testSymbolTableExpansionBytes() throws Exception {
+        _testSymbolTableExpansion(true);
+    }
+    
+    /*
+    /**********************************************************
+    /* Secondary test methods
+    /**********************************************************
+     */
+
     private void _test17Chars(boolean useBytes) throws IOException
     {
-        String doc = _createDoc();
+        String doc = _createDoc17();
         JsonFactory f = new JsonFactory();
 
-        JsonParser p;
-        if (useBytes) {
-            p = f.createParser(doc.getBytes("UTF-8"));
-        } else {
-            p = f.createParser(doc);
-        }
+        JsonParser p = useBytes
+                ? f.createParser(doc.getBytes("UTF-8"))
+                : f.createParser(doc);
         HashSet<String> syms = new HashSet<String>();
         assertToken(JsonToken.START_OBJECT, p.nextToken());
         for (int i = 0; i < 50; ++i) {
@@ -46,7 +58,7 @@ private void _test17Chars(boolean useBytes) throws IOException
         p.close();
     }
 
-    private String _createDoc() {
+    private String _createDoc17() {
         StringBuilder sb = new StringBuilder(1000);
         sb.append("{\n");
         for (int i = 1; i <= 50; ++i) {
@@ -60,4 +72,24 @@ private String _createDoc() {
         sb.append("\n}");
         return sb.toString();
     }
+
+    public void _testSymbolTableExpansion(boolean useBytes) throws Exception
+    {
+        JsonFactory jsonFactory = new JsonFactory();
+        // Important: must create separate documents to gradually build up symbol table
+        for (int i = 0; i < 200; i++) {
+            String field = Integer.toString(i);
+            final String doc = "{ \"" + field + "\" : \"test\" }";
+            JsonParser parser = useBytes
+                    ? jsonFactory.createParser(doc.getBytes("UTF-8"))
+                    : jsonFactory.createParser(doc);
+            assertToken(JsonToken.START_OBJECT, parser.nextToken());
+            assertToken(JsonToken.FIELD_NAME, parser.nextToken());
+            assertEquals(field, parser.getCurrentName());
+            assertToken(JsonToken.VALUE_STRING, parser.nextToken());
+            assertToken(JsonToken.END_OBJECT, parser.nextToken());
+            assertNull(parser.nextToken());
+            parser.close();
+        }
+    }
 }