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85 lines
3.6 KiB
Java
85 lines
3.6 KiB
Java
package net.sourceforge.plantuml.servlet;
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import java.io.ByteArrayOutputStream;
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import java.io.InputStream;
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import java.text.SimpleDateFormat;
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import java.util.Date;
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import java.util.Locale;
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import com.meterware.httpunit.GetMethodWebRequest;
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import com.meterware.httpunit.WebConversation;
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import com.meterware.httpunit.WebRequest;
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import com.meterware.httpunit.WebResponse;
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public class TestImage extends WebappTestCase {
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/**
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* Verifies the generation of the version image from an encoded URL
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*/
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public void testVersionImage() throws Exception {
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WebConversation conversation = new WebConversation();
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WebRequest request = new GetMethodWebRequest(getServerUrl() + "png/" + TestUtils.VERSION);
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WebResponse response = conversation.getResource(request);
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// Analyze response
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// Verifies the Content-Type header
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assertEquals("Response content type is not PNG", "image/png", response.getContentType());
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// Get the image and verify its size
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InputStream responseStream = response.getInputStream();
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ByteArrayOutputStream imageStream = new ByteArrayOutputStream();
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byte[] buf = new byte[1024];
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int n = 0;
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while ((n = responseStream.read(buf)) != -1) {
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imageStream.write(buf, 0, n);
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}
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imageStream.close();
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byte[] inMemoryImage = imageStream.toByteArray();
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int diagramLen = inMemoryImage.length;
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assertTrue(diagramLen > 10000);
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assertTrue(diagramLen < 20000);
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responseStream.close();
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}
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/**
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* Verifies that the HTTP header of a diagram incites the browser to cache it.
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*/
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public void testDiagramHttpHeader() throws Exception {
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WebConversation conversation = new WebConversation();
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// Bob -> Alice : hello
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WebRequest request = new GetMethodWebRequest(getServerUrl() + "png/" + TestUtils.SEQBOB);
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WebResponse response = conversation.getResource(request);
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// Analyze response
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// Verifies the Content-Type header
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assertEquals("Response content type is not PNG", "image/png", response.getContentType());
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// Verifies the availability of the Expires entry in the response header
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assertNotNull(response.getHeaderField("Expires"));
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// Verifies the availability of the Last-Modified entry in the response header
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assertNotNull(response.getHeaderField("Last-Modified"));
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// Verifies the Last-Modified value is in the past
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SimpleDateFormat format = new SimpleDateFormat("EEE, dd MMM yyyy HH:mm:ss ZZZ", Locale.ENGLISH);
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Date lastModified = format.parse(response.getHeaderField("Last-Modified"));
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assertTrue("Last-Modified is not in the past", lastModified.before(new Date()));
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// Consume the response
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InputStream responseStream = response.getInputStream();
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while (responseStream.read() != -1) {
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// Do nothing
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}
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}
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/**
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* Verifies that the HTTP header of a diagram incites the browser to cache it.
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*/
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public void testOldImgURL() throws Exception {
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WebConversation conversation = new WebConversation();
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// Bob -> Alice : hello
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WebRequest request = new GetMethodWebRequest(getServerUrl() + "img/" + TestUtils.SEQBOB);
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WebResponse response = conversation.getResource(request);
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// Analyze response
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// Verifies the Content-Type header
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assertEquals("Response content type is not PNG", "image/png", response.getContentType());
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// Consume the response
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InputStream responseStream = response.getInputStream();
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while (responseStream.read() != -1) {
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// Do nothing
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}
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}
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}
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