add servlet to encode and decode diagrams

.

src/test/java/net/sourceforge/plantuml/servlet/TestAsciiCoder.java

@@ -0,0 +1,61 @@
+package net.sourceforge.plantuml.servlet;
+
+import java.io.IOException;
+import java.io.OutputStreamWriter;
+import java.net.HttpURLConnection;
+import java.net.URL;
+import java.net.URLConnection;
+
+
+public class TestAsciiCoder extends WebappTestCase {
+
+    /**
+     * Verifies the decoding for the Bob -> Alice sample
+     */
+    public void testBobAliceSampleDiagramDecoding() throws IOException {
+        final URL url = new URL(getServerUrl() + "/coder/" + TestUtils.SEQBOB);
+        final URLConnection conn = url.openConnection();
+        // Analyze response
+        // Verifies the Content-Type header
+        assertEquals(
+            "Response content type is not TEXT PLAIN or UTF-8",
+            "text/plain;charset=utf-8",
+            conn.getContentType().toLowerCase()
+        );
+        // Get and verify the content
+        final String diagram = getContentText(conn);
+        assertEquals(TestUtils.SEQBOBCODE, diagram);
+    }
+
+    /**
+     * Verifies the encoding for the Bob -> Alice sample
+     */
+    public void testBobAliceSampleDiagramEncoding() throws IOException {
+        final URL url = new URL(getServerUrl() + "/coder");
+        final HttpURLConnection conn = (HttpURLConnection)url.openConnection();
+        conn.setRequestMethod("POST");
+        conn.setDoOutput(true);
+        conn.setRequestProperty("Content-type", "text/plain");
+        try (final OutputStreamWriter writer = new OutputStreamWriter(conn.getOutputStream())) {
+            writer.write(TestUtils.SEQBOBCODE);
+            writer.flush();
+        }
+        // Analyze response
+        // HTTP response 200
+        assertEquals(
+            "Bad HTTP status received",
+            200,
+            conn.getResponseCode()
+        );
+        // Verifies the Content-Type header
+        assertEquals(
+            "Response content type is not TEXT PLAIN or UTF-8",
+            "text/plain;charset=utf-8",
+            conn.getContentType().toLowerCase()
+        );
+        // Get the content and verify its size
+        final String diagram = getContentText(conn.getInputStream());
+        assertEquals(TestUtils.SEQBOB, diagram);
+    }
+
+}

src/test/java/net/sourceforge/plantuml/servlet/TestForm.java

@@ -28,7 +28,7 @@ public class TestForm extends WebappTestCase {
             assertEquals(2, forms.size());
             // Ensure the Text field is correct
             String text = ((HtmlTextArea)(forms.get(0).getFirstByXPath("//textarea[contains(@name, 'text')]"))).getTextContent();
-            assertEquals("@startuml\nBob -> Alice : hello\n@enduml", text);
+            assertEquals(TestUtils.SEQBOBCODE, text);
             // Ensure the URL field is correct
             HtmlInput url = forms.get(1).getInputByName("url");
             assertNotNull(url);
@@ -57,7 +57,7 @@ public class TestForm extends WebappTestCase {
             assertEquals(2, forms.size());
             // Ensure the Text field is correct
             String text = ((HtmlTextArea)(forms.get(0).getFirstByXPath("//textarea[contains(@name, 'text')]"))).getTextContent();
-            assertEquals("@startuml\nversion\n@enduml", text);
+            assertEquals(TestUtils.VERSIONCODE, text);
             // Ensure the URL field is correct
             HtmlInput url = forms.get(1).getInputByName("url");
             assertNotNull(url);
@@ -86,7 +86,7 @@ public class TestForm extends WebappTestCase {
             assertEquals(2, forms.size());
             // Ensure the Text field is correct
             String text = ((HtmlTextArea)(forms.get(0).getFirstByXPath("//textarea[contains(@name, 'text')]"))).getTextContent();
-            assertEquals("@startuml\nBob -> Alice : hello\n@enduml", text);
+            assertEquals(TestUtils.SEQBOBCODE, text);
             // Ensure the URL field is correct
             HtmlInput url = forms.get(1).getInputByName("url");
             assertNotNull(url);
@@ -116,7 +116,7 @@ public class TestForm extends WebappTestCase {
             assertEquals(2, forms.size());
             // Ensure the Text field is correct
             String text = ((HtmlTextArea)(forms.get(0).getFirstByXPath("//textarea[contains(@name, 'text')]"))).getTextContent();
-            assertEquals("@startuml\nBob -> Alice : hello\n@enduml", text);
+            assertEquals(TestUtils.SEQBOBCODE, text);
             // Ensure the URL field is correct
             url = forms.get(1).getInputByName("url");
             assertNotNull(url);
@@ -204,7 +204,7 @@ public class TestForm extends WebappTestCase {
             assertEquals(2, forms.size());
             // Ensure the Text field is correct
             String text = ((HtmlTextArea)(forms.get(0).getFirstByXPath("//textarea[contains(@name, 'text')]"))).getTextContent();
-            assertEquals("@startuml\nBob -> Alice : hello\n@enduml", text);
+            assertEquals(TestUtils.SEQBOBCODE, text);
             // Ensure the URL field is correct
             HtmlInput url = forms.get(1).getInputByName("url");
             assertNotNull(url);

src/test/java/net/sourceforge/plantuml/servlet/TestUtils.java

@@ -15,9 +15,19 @@ public abstract class TestUtils {
      */
     public static final String VERSION = "AqijAixCpmC0";
 
+    /**
+     * version
+     */
+    public static final String VERSIONCODE = "@startuml\nversion\n@enduml";
+
     /**
      * Bob -> Alice : hello
      */
     public static final String SEQBOB = "SyfFKj2rKt3CoKnELR1Io4ZDoSa70000";
 
+    /**
+     * Bob -> Alice : hello
+     */
+    public static final String SEQBOBCODE = "@startuml\nBob -> Alice : hello\n@enduml";
+
 }