Add failing test for #700

src/test/java/com/fasterxml/jackson/failing/BasicParserFiltering700Test.java

@@ -0,0 +1,102 @@
+package com.fasterxml.jackson.failing;
+
+import com.fasterxml.jackson.core.*;
+import com.fasterxml.jackson.core.filter.FilteringParserDelegate;
+import com.fasterxml.jackson.core.filter.TokenFilter;
+import com.fasterxml.jackson.core.filter.TokenFilter.Inclusion;
+
+@SuppressWarnings("resource")
+public class BasicParserFiltering700Test extends BaseTest
+{
+    static class NoTypeFilter extends TokenFilter {
+        @Override
+        public TokenFilter includeProperty(String name) {
+            if ("@type".equals(name)) {
+                return null;
+            }
+            return this;
+        }
+
+        @Override
+        protected boolean _includeScalar() {
+            return true;
+        }
+    }
+
+    /*
+    /**********************************************************************
+    /* Test methods
+    /**********************************************************************
+     */
+
+    private final JsonFactory JSON_F = new JsonFactory();
+
+    // for [core#700]
+    public void testSkippingSimple() throws Exception
+    {
+        final String json = a2q("{'@type':'yyy','value':12}");
+        // should become: {"value":12}
+        JsonParser p0 = JSON_F.createParser(json);
+        JsonParser p = new FilteringParserDelegate(p0,
+                new NoTypeFilter(),
+                Inclusion.INCLUDE_ALL_AND_PATH,
+                true // multipleMatches
+        );
+
+        assertToken(JsonToken.START_OBJECT, p.nextToken());
+
+        assertToken(JsonToken.FIELD_NAME, p.nextToken());
+        assertEquals("value", p.currentName());
+        assertToken(JsonToken.VALUE_NUMBER_INT, p.nextToken());
+        assertEquals(12, p.getIntValue());
+        assertToken(JsonToken.FIELD_NAME, p.nextToken());
+
+        assertEquals(JsonToken.END_OBJECT, p.getCurrentToken());
+        assertNull(p.nextToken());
+
+        p.close();
+    }
+
+    // Full test:
+/*
+    // for [core#700]
+    public void testSkippingForSingleWithPath() throws Exception
+    {
+        final String json = a2q(
+ //               "{'@type':'xxx','value':{'@type':'yyy','a':12,'b':34}}");
+    "{'value':{'@type':'yyy','a':12,'b':34}}");
+        // should become: {"value":{"a":12,"b":34"}}
+
+        JsonParser p0 = JSON_F.createParser(json);
+        JsonParser p = new FilteringParserDelegate(p0,
+                new NoTypeFilter(),
+                Inclusion.INCLUDE_ALL_AND_PATH,
+                true // multipleMatches
+        );
+
+//        String filtered = readAndWrite(JSON_F, p);
+//        System.out.println("->\n"+filtered);
+
+        assertToken(JsonToken.START_OBJECT, p.nextToken());
+
+        assertToken(JsonToken.FIELD_NAME, p.nextToken());
+        assertEquals("value", p.currentName());
+
+        assertToken(JsonToken.START_OBJECT, p.nextToken());
+        assertToken(JsonToken.FIELD_NAME, p.nextToken());
+        assertEquals("a", p.currentName());
+        assertToken(JsonToken.VALUE_NUMBER_INT, p.nextToken());
+        assertEquals(12, p.getIntValue());
+        assertToken(JsonToken.FIELD_NAME, p.nextToken());
+        assertEquals("b", p.currentName());
+        assertToken(JsonToken.VALUE_NUMBER_INT, p.nextToken());
+        assertEquals(34, p.getIntValue());
+        assertEquals(JsonToken.END_OBJECT, p.getCurrentToken());
+
+        assertEquals(JsonToken.END_OBJECT, p.getCurrentToken());
+        assertNull(p.nextToken());
+
+        p.close();
+    }
+    */
+}