Fixes #3412 - Fix TCK test

core/impl/src/test/java/cloud/piranha/core/impl/ServletOutputStreamTest.java → core/api/src/main/java/cloud/piranha/core/api/WebApplicationPrintWriter.java

@@ -25,31 +25,32 @@
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  * POSSIBILITY OF SUCH DAMAGE.
  */
-package cloud.piranha.core.impl;
+package cloud.piranha.core.api;
 
-import cloud.piranha.core.api.WebApplication;
-import cloud.piranha.core.api.WebApplicationRequest;
-import cloud.piranha.core.api.WebApplicationResponse;
+import java.io.PrintWriter;
+import java.io.Writer;
 
 /**
- * The JUnit tests for the ServletOutputStream API.
- *
+ * The WebApplicationPrintWriter API.
+ * 
  * @author Manfred Riem (mriem@manorrock.com)
  */
-public class ServletOutputStreamTest extends cloud.piranha.core.tests.ServletOutputStreamTest {
-
-    @Override
-    public WebApplication createWebApplication() {
-        return new DefaultWebApplication();
-    }
-
-    @Override
-    public WebApplicationRequest createWebApplicationRequest() {
-        return new DefaultWebApplicationRequest();
-    }
-
-    @Override
-    public WebApplicationResponse createWebApplicationResponse() {
-        return new DefaultWebApplicationResponse();
+public class WebApplicationPrintWriter extends PrintWriter {
+
+    /**
+     * Stores the response object.
+     */
+    protected WebApplicationResponse response;
+
+    /**
+     * Constructor.
+     * 
+     * @param response the response object.
+     * @param writer the writer.
+     * @param autoFlush the auto flush flag.
+     */
+    public WebApplicationPrintWriter(WebApplicationResponse response, Writer writer, boolean autoFlush) {
+        super(writer, autoFlush);
+        this.response = response;
     }
 }

core/api/src/main/java/cloud/piranha/core/api/WebApplicationResponse.java

@@ -49,6 +49,11 @@ public interface WebApplicationResponse extends HttpServletResponse {
      * @return the content language.
      */
     String getContentLanguage();
+
+    /**
+     * Get the content length.
+     */
+    long getContentLength();
 
     /**
      * {@return the cookies}

core/impl/src/main/java/cloud/piranha/core/impl/DefaultWebApplicationPrintWriter.java

@@ -0,0 +1,94 @@
+/*
+ * Copyright (c) 2002-2023 Manorrock.com. All Rights Reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *   1. Redistributions of source code must retain the above copyright notice,
+ *      this list of conditions and the following disclaimer.
+ *   2. Redistributions in binary form must reproduce the above copyright
+ *      notice, this list of conditions and the following disclaimer in the
+ *      documentation and/or other materials provided with the distribution.
+ *   3. Neither the name of the copyright holder nor the names of its
+ *      contributors may be used to endorse or promote products derived from
+ *      this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+package cloud.piranha.core.impl;
+
+import cloud.piranha.core.api.WebApplicationPrintWriter;
+import cloud.piranha.core.api.WebApplicationResponse;
+import java.io.IOException;
+import java.io.Writer;
+
+/**
+ * The PrintWriter for a WebApplicationResponse.
+ *
+ * @author Manfred Riem (mriem@manorrock.com)
+ */
+public class DefaultWebApplicationPrintWriter extends WebApplicationPrintWriter {
+
+    /**
+     * Stores the content length.
+     */
+    private long contentLength = -1;
+
+    /**
+     * Stores the content written.
+     */
+    private long contentWritten = 0;
+
+    /**
+     * Constructor.
+     *
+     * @param response the response object.
+     * @param writer the writer.
+     * @param autoFlush the auto flush flag.
+     */
+    public DefaultWebApplicationPrintWriter(WebApplicationResponse response, Writer writer, boolean autoFlush) {
+        super(response, writer, autoFlush);
+        contentLength = response.getContentLength() * 2;
+    }
+
+    @Override
+    public void write(char[] characters) {
+        if (characters != null) {
+            for (int i = 0; i < characters.length; i++) {
+                write(characters[i]);
+            }
+        }
+    }
+
+    @Override
+    public void write(String s) {
+        if (s != null) {
+            s.chars().forEach(c -> write(c));
+        }
+    }
+
+    @Override
+    public void write(int c) {
+        super.write(c);
+        if (contentLength > 0) {
+            contentWritten++;
+            if (contentWritten > contentLength) {
+                try {
+                    response.flushBuffer();
+                } catch (IOException ioe) {
+                    ioe.printStackTrace();
+                }
+            }
+        }
+    }
+}

core/impl/src/main/java/cloud/piranha/core/impl/DefaultWebApplicationResponse.java

@@ -316,6 +316,11 @@ public String getCharacterEncoding() {
     public String getContentLanguage() {
         return contentLanguage;
     }
+
+    @Override
+    public long getContentLength() {
+        return contentLength;
+    }
 
     @Override
     public String getContentType() {
@@ -409,7 +414,7 @@ public synchronized PrintWriter getWriter() throws IOException {
                     setCharacterEncoding(ISO_8859_1);
                 }
                 gotWriter = true;
-                writer = new PrintWriter(new OutputStreamWriter(webApplicationOutputStream, characterEncoding), false);
+                writer = new DefaultWebApplicationPrintWriter(this, new OutputStreamWriter(webApplicationOutputStream, characterEncoding), false);
             }
             result = writer;
         } else {

core/impl/src/main/java/module-info.java

@@ -37,4 +37,5 @@
     opens cloud.piranha.core.impl;
     requires transitive cloud.piranha.core.api;
     requires transitive cloud.piranha.resource.impl;
+    requires java.base;
 }

core/tests/src/main/java/cloud/piranha/core/tests/ServletOutputStreamTest.java → core/impl/src/test/java/cloud/piranha/core/impl/DefaultWebApplicationOutputStreamTest.java

@@ -25,61 +25,37 @@
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  * POSSIBILITY OF SUCH DAMAGE.
  */
-package cloud.piranha.core.tests;
+package cloud.piranha.core.impl;
 
-import cloud.piranha.core.api.WebApplication;
-import cloud.piranha.core.api.WebApplicationRequest;
-import cloud.piranha.core.api.WebApplicationResponse;
 import jakarta.servlet.ServletOutputStream;
 import jakarta.servlet.WriteListener;
 import java.io.IOException;
 import static org.junit.jupiter.api.Assertions.assertFalse;
 import static org.junit.jupiter.api.Assertions.assertNotNull;
 
 /**
- * The JUnit tests for the ServletOutputStream API.
- * 
+ * The JUnit tests for the DefaultWebApplicationResponse class.
+ *
  * @author Manfred Riem (mriem@manorrock.com)
  */
-public abstract class ServletOutputStreamTest {
-
-    /**
-     * Create a web application.
-     * 
-     * @return the web application.
-     */
-    public abstract WebApplication createWebApplication();
-
-    /**
-     * Create a web application request.
-     * 
-     * @return the web application request.
-     */
-    public abstract WebApplicationRequest createWebApplicationRequest();
-
-    /**
-     * Create a web application response.
-     * 
-     * @return the web application response.
-     */
-    public abstract WebApplicationResponse createWebApplicationResponse();
-
+class DefaultWebApplicationOutputStreamTest {
+
     /**
      * Test isReady method.
-     * 
+     *
      * @throws Exception when a serious error occurs.
      */
     void testIsReady() throws Exception {
-        WebApplicationResponse response = createWebApplicationResponse();
+        DefaultWebApplicationResponse response = new DefaultWebApplicationResponse();
         ServletOutputStream outputStream = response.getOutputStream();
         assertFalse(outputStream.isReady());
     }
-    
+
     /**
      * Test setWriteListener method.
      */
     void testWriteListener() throws Exception {
-        WebApplicationResponse response = createWebApplicationResponse();
+        DefaultWebApplicationResponse response = new DefaultWebApplicationResponse();
         ServletOutputStream outputStream = response.getOutputStream();
         outputStream.setWriteListener(new WriteListener() {
             @Override

core/impl/src/test/java/cloud/piranha/core/impl/DefaultWebApplicationResponseTest.java

@@ -192,6 +192,25 @@ void testFlushBuffer() {
             fail();
         }
     }
+
+    /**
+     * Test flushBuffer method.
+     * 
+     * @throws Exception when a serious error occurs.
+     */
+    @Test
+    void testFlushBuffer2() throws Exception {
+        DefaultWebApplicationResponse response = new DefaultWebApplicationResponse();
+        response.setContentLength(20);
+        PrintWriter writer = response.getWriter();
+        writer.print("0123456789");
+        writer.print("0123456789");
+        writer.print("0123456789");
+        writer.print("0123456789");
+        writer.println("And we flushed!");
+        response.addIntHeader("header1", 12345);
+        assertNull(response.getHeader("header1"));
+    }
 
     /**
      * Test getBufferSize method.