test of Auth Code Grant flow

src/test/java/com/ysoft/geecon/helpers/LoginScreen.java

@@ -0,0 +1,33 @@
+package com.ysoft.geecon.helpers;
+
+import org.jsoup.nodes.Document;
+import org.jsoup.nodes.FormElement;
+
+import java.io.IOException;
+
+public class LoginScreen {
+
+    private final FormElement form;
+
+    public LoginScreen(Document doc) {
+        this.form = doc.expectForm("form");
+        ;
+    }
+
+    public Document submit(String username, String password) throws IOException {
+        form.getElementsByAttributeValue("name", "username").val(username);
+        form.getElementsByAttributeValue("name", "password").val(password);
+
+        return form.submit().post();
+    }
+
+    public ConsentScreen submitCorrect(String username, String password) throws IOException {
+        Document posted = submit(username, password);
+        return new ConsentScreen(posted);
+    }
+
+    public LoginScreen submitWrong(String username, String password) throws IOException {
+        Document posted = submit(username, password);
+        return new LoginScreen(posted);
+    }
+}