| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.apache.sling.servlets.get.impl.helpers; |
| |
| import static org.junit.Assert.assertEquals; |
| |
| import java.io.BufferedInputStream; |
| import java.io.ByteArrayInputStream; |
| import java.io.ByteArrayOutputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.util.Random; |
| import javax.servlet.ServletContext; |
| import junitx.util.PrivateAccessor; |
| import org.apache.sling.api.SlingHttpServletResponse; |
| import org.apache.sling.api.resource.Resource; |
| import org.apache.sling.api.resource.ResourceMetadata; |
| import org.junit.Test; |
| import org.mockito.Mockito; |
| |
| public class StreamRendererServletTest { |
| |
| @Test |
| public void testCopyRange() throws IOException { |
| runTests(1234); |
| runTests(4321); |
| } |
| |
| @Test |
| public void testResultingLength() throws IOException { |
| final ByteArrayInputStream in = new ByteArrayInputStream("12345678".getBytes()); |
| final ByteArrayOutputStream out = new ByteArrayOutputStream(); |
| StreamRenderer.staticCopyRange(in, out, 2, 4); |
| final String result = out.toString(); |
| assertEquals(2, result.length()); |
| assertEquals("34", result); |
| } |
| |
| private void runTests(int randomSeed) throws IOException { |
| final Random random = new Random(randomSeed); |
| assertCopyRange(random, StreamRenderer.IO_BUFFER_SIZE * 2 + 42); |
| assertCopyRange(random, StreamRenderer.IO_BUFFER_SIZE * 3); |
| assertCopyRange(random, StreamRenderer.IO_BUFFER_SIZE); |
| assertCopyRange(random, StreamRenderer.IO_BUFFER_SIZE - 1); |
| assertCopyRange(random, random.nextInt(StreamRenderer.IO_BUFFER_SIZE)); |
| assertCopyRange(random, 42); |
| assertCopyRange(random, 1); |
| } |
| |
| private void assertCopyRange(Random random, int bufferSize) throws IOException { |
| |
| // generate some random test data |
| final byte[] expected = new byte[bufferSize]; |
| random.nextBytes(expected); |
| |
| // Check some simple cases ... |
| assertCopyRange(expected, 0, 0); |
| assertCopyRange(expected, 0, 1); |
| assertCopyRange(expected, 0, expected.length); |
| |
| // ... and a few randomly selected ones |
| final int n = random.nextInt(100); |
| for (int i = 0; i < n; i++) { |
| final int a = random.nextInt(expected.length); |
| final int b = random.nextInt(expected.length); |
| assertCopyRange(expected, Math.min(a, b), Math.max(a, b)); |
| } |
| } |
| |
| private void assertCopyRange(byte[] expected, int a, int b) throws IOException { |
| assertCopyRange(expected, new ByteArrayInputStream(expected), a, b); |
| // with BufferedInputStream |
| assertCopyRange(expected, new BufferedInputStream(new ByteArrayInputStream(expected)), a, b); |
| // without available() |
| assertCopyRange(expected, new ByteArrayInputStream(expected) { |
| @Override |
| public synchronized int available() { |
| return 0; |
| } |
| }, a, b); |
| // with BufferedInputStream and without available() |
| assertCopyRange(expected, new BufferedInputStream(new ByteArrayInputStream(expected) { |
| @Override |
| public synchronized int available() { |
| return 0; |
| } |
| }), a, b); |
| // with an input stream that does not return everything in read() |
| assertCopyRange(expected, new ByteArrayInputStream(expected) { |
| @Override |
| public synchronized int read(byte[] b, int off, int len) { |
| // allow maximum of 10 |
| if (len > 10) { |
| len = 10; |
| } |
| return super.read(b, off, len); |
| } |
| }, a, b); |
| } |
| |
| private void assertCopyRange( |
| byte[] expected, InputStream input, int a, int b) throws IOException { |
| ByteArrayOutputStream output = new ByteArrayOutputStream(); |
| |
| StreamRenderer.staticCopyRange(input, output, a, b); |
| |
| byte[] actual = output.toByteArray(); |
| assertEquals(b - a, actual.length); |
| for (int i = a; i < b; i++) { |
| assertEquals(expected[i], actual[i - a]); |
| } |
| } |
| |
| @Test |
| public void test_setHeaders() throws Throwable { |
| |
| final Resource resource = Mockito.mock(Resource.class); |
| final SlingHttpServletResponse response = Mockito.mock(SlingHttpServletResponse .class); |
| final ResourceMetadata meta = Mockito.mock(ResourceMetadata.class); |
| final ServletContext sc = Mockito.mock(ServletContext.class); |
| |
| @SuppressWarnings("serial") |
| StreamRenderer streamRendererServlet = new StreamRenderer(true,new String []{"/"},sc); |
| |
| Mockito.when(resource.getResourceMetadata()).thenReturn(meta); |
| PrivateAccessor.invoke(streamRendererServlet, "setHeaders", new Class[]{Resource.class, SlingHttpServletResponse.class}, new Object[]{resource, response}); |
| Mockito.verify(response,Mockito.times(1)).setContentType("application/octet-stream"); |
| } |
| } |