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StreamResultTest.javaAPI DocExample8633Mon Jul 23 13:26:12 BST 2007org.apache.struts2.dispatcher

StreamResultTest

public class StreamResultTest extends TestCase
Unit test for {@link StreamResult}.

Fields Summary
private StreamResult
result
private org.springframework.mock.web.MockHttpServletResponse
response
private com.opensymphony.xwork2.mock.MockActionInvocation
mai
private com.opensymphony.xwork2.util.ValueStack
stack
private int
contentLength
Constructors Summary
Methods Summary
protected voidsetUp()

        response = new MockHttpServletResponse();

        result = new StreamResult();
        stack = ValueStackFactory.getFactory().createValueStack();
        ActionContext.getContext().setValueStack(stack);

        MyImageAction action = new MyImageAction();
        contentLength = (int) action.getContentLength();

        mai = new com.opensymphony.xwork2.mock.MockActionInvocation();
        mai.setAction(action);
        mai.setStack(stack);
        mai.setInvocationContext(ActionContext.getContext());
        stack.push(action);

        ActionContext.getContext().put(ServletActionContext.HTTP_RESPONSE, response);
protected voidtearDown()

        response = null;
        result = null;
        stack = null;
        contentLength = 0;
        mai = null;
public voidtestStreamResultDefault()

        result.setInputName("streamForImage");

        result.doExecute("helloworld", mai);

        assertEquals(null, result.getContentLength());
        assertEquals("text/plain", result.getContentType());
        assertEquals("streamForImage", result.getInputName());
        assertEquals(1024, result.getBufferSize()); // 1024 is default
        assertEquals("inline", result.getContentDisposition());

        assertEquals("text/plain", response.getContentType());
        assertEquals(0, response.getContentLength());
        assertEquals("inline", response.getHeader("Content-disposition"));
public voidtestStreamResultNoDefault()

        // it's not easy to test using easymock as we use getOutputStream on HttpServletResponse.
        result.setParse(false);
        result.setInputName("streamForImage");
        result.setBufferSize(128);
        result.setContentLength(String.valueOf(contentLength));
        result.setContentDisposition("filename=\"logo.png\"");
        result.setContentType("image/jpeg");

        result.doExecute("helloworld", mai);

        assertEquals(String.valueOf(contentLength), result.getContentLength());
        assertEquals("image/jpeg", result.getContentType());
        assertEquals("streamForImage", result.getInputName());
        assertEquals(128, result.getBufferSize());
        assertEquals("filename=\"logo.png\"", result.getContentDisposition());

        assertEquals("image/jpeg", response.getContentType());
        assertEquals(contentLength, response.getContentLength());
        assertEquals("filename=\"logo.png\"", response.getHeader("Content-disposition"));
public voidtestStreamResultNoInputName()


         
        result.setParse(false);
        result.setInputName(null);

        try {
            result.doExecute("helloworld", mai);
            fail("Should have thrown an IllegalArgumentException");
        } catch (IllegalArgumentException e) {
            // success
        }
public voidtestStreamResultParse1()

        ///////////////////
        result.setParse(true);
        // ${...} conditionalParse of Result, returns String,
        // which gets evaluated to the stack, that's how it works.
        // We use ${streamForImageAsString} that returns "streamForImage"
        // which is a property that returns an InputStream object.
        result.setInputName("${streamForImageAsString}");
        result.setBufferSize(128);
        result.setContentLength(String.valueOf(contentLength));
        result.setContentDisposition("filename=\"logo.png\"");
        result.setContentType("image/jpeg");

        result.doExecute("helloworld", mai);

        assertEquals(String.valueOf(contentLength), result.getContentLength());
        assertEquals("image/jpeg", result.getContentType());
        assertEquals("${streamForImageAsString}", result.getInputName());
        assertEquals(128, result.getBufferSize());
        assertEquals("filename=\"logo.png\"", result.getContentDisposition());

        assertEquals("image/jpeg", response.getContentType());
        assertEquals(contentLength, response.getContentLength());
        assertEquals("filename=\"logo.png\"", response.getHeader("Content-disposition"));
public voidtestStreamResultParse2()

        ///////////////////
        result.setParse(true);
        // This time we dun use ${...}, so streamForImage will
        // be evaluated to the stack, which should reaturn an
        // InputStream object, cause there's such a property in
        // the action object itself.
        result.setInputName("streamForImage");
        result.setBufferSize(128);
        result.setContentLength(String.valueOf(contentLength));
        result.setContentDisposition("filename=\"logo.png\"");
        result.setContentType("image/jpeg");

        result.doExecute("helloworld", mai);

        assertEquals(String.valueOf(contentLength), result.getContentLength());
        assertEquals("image/jpeg", result.getContentType());
        assertEquals("streamForImage", result.getInputName());
        assertEquals(128, result.getBufferSize());
        assertEquals("filename=\"logo.png\"", result.getContentDisposition());

        assertEquals("image/jpeg", response.getContentType());
        assertEquals(contentLength, response.getContentLength());
        assertEquals("filename=\"logo.png\"", response.getHeader("Content-disposition"));
public voidtestStreamResultParseNoInputName()

        result.setParse(true);
        result.setInputName("${top}");

        try {
            result.doExecute("helloworld", mai);
            fail("Should have thrown an IllegalArgumentException");
        } catch (IllegalArgumentException e) {
            // success
        }