Added failing test of loadMore function simulating malfunction mentioned in previous commit.

Author: svobol13

src/test/java/com/jsoniter/IterImplForStreamingTest.java

@@ -1,6 +1,10 @@
 package com.jsoniter;
 
+import com.jsoniter.any.Any;
+import java.io.IOException;
+import java.io.InputStream;
 import junit.framework.TestCase;
+import org.junit.experimental.categories.Category;
 
 public class IterImplForStreamingTest extends TestCase {
 
@@ -11,4 +15,37 @@ public void testReadMaxDouble() throws Exception {
 		String number = new String(numberChars.chars, 0, numberChars.charsLength);
 		assertEquals(maxDouble, number);
 	}
-}
+
+	@Category(StreamingCategory.class)
+	public void testLoadMore() throws IOException {
+		final String originalContent = "1234";
+		final byte[] src = ("{\"a\":\"" + originalContent + "\"}").getBytes();
+		InputStream slowStream = new InputStream() {
+			int position = 0;
+			boolean pretendEmptyNextRead = false;
+
+			@Override
+			public int read() throws IOException {
+				if (position < src.length) {
+					if (pretendEmptyNextRead) {
+						pretendEmptyNextRead = false;
+						return -1;
+					} else {
+						pretendEmptyNextRead = true;
+						return src[position++];
+					}
+				}
+				return -1;
+			}
+		};
+
+		// Input must definitely fit into such large buffer
+		final int initialBufferSize = src.length * 2;
+		JsonIterator jsonIterator = JsonIterator.parse(slowStream, initialBufferSize);
+		jsonIterator.readObject();
+		Any parsedString = jsonIterator.readAny();
+		assertEquals(originalContent, parsedString.toString());
+		// Check buffer was not expanded prematurely
+		assertEquals(initialBufferSize, jsonIterator.buf.length);
+	}
+}

src/test/java/com/jsoniter/suite/AllTestCases.java

@@ -53,6 +53,7 @@
         TestGson.class,
         com.jsoniter.output.TestGson.class,
         TestStreamBuffer.class,
+        IterImplForStreamingTest.class,
         TestCollection.class,
         TestList.class,
         TestAnnotationJsonObject.class,