diff --git a/autotests/CMakeLists.txt b/autotests/CMakeLists.txt
--- a/autotests/CMakeLists.txt
+++ b/autotests/CMakeLists.txt
@@ -82,3 +82,8 @@
     LINK_LIBRARIES Qt5::Test KF5::CoreAddons okularcore
 )
 target_compile_definitions(generatorstest PRIVATE GENERATORS_BUILD_DIR="${CMAKE_BINARY_DIR}/generators")
+
+ecm_add_test(signatureformtest.cpp
+    TEST_NAME "signatureformtest"
+    LINK_LIBRARIES Qt5::Test okularcore
+)
diff --git a/autotests/data/pdf_with_signature.pdf b/autotests/data/pdf_with_signature.pdf
new file mode 100644
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000
GIT binary patch
literal 0
Hc$@<O00001

literal 0
Hc$@<O00001

diff --git a/autotests/signatureformtest.cpp b/autotests/signatureformtest.cpp
new file mode 100644
--- /dev/null
+++ b/autotests/signatureformtest.cpp
@@ -0,0 +1,62 @@
+/***************************************************************************
+ *   Copyright (C) 2018 by Chinmoy Ranjan Pradhan <chinmoyrp65@gmail.com>                 *
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ ***************************************************************************/
+
+#include <QtTest>
+
+#include <QMimeType>
+#include <QMimeDatabase>
+
+#include "../settings_core.h"
+#include <core/document.h>
+#include <core/form.h>
+#include <core/page.h>
+
+class SignatureFormTest : public QObject
+{
+    Q_OBJECT
+
+private slots:
+    void initTestCase();
+    void cleanupTestCase();
+    void testSignatureForm();
+
+private:
+    Okular::Document *m_document;
+};
+
+void SignatureFormTest::initTestCase()
+{
+    Okular::SettingsCore::instance( QStringLiteral("signatureformtest") );
+    m_document = new Okular::Document( nullptr );
+}
+
+void SignatureFormTest::cleanupTestCase()
+{
+    delete m_document;
+}
+
+void SignatureFormTest::testSignatureForm()
+{
+    const QString testFile = QStringLiteral(KDESRCDIR "data/pdf_with_signature.pdf");
+    QMimeDatabase db;
+    const QMimeType mime = db.mimeTypeForFile( testFile );
+    QCOMPARE( m_document->openDocument(testFile, QUrl(), mime), Okular::Document::OpenSuccess );
+
+    const Okular::Page *page = m_document->page( 0 );
+    QLinkedList< Okular::FormField * > pageFields = page->formFields();
+    QCOMPARE( pageFields.size(), 1 );
+    QCOMPARE( pageFields.first()->type(), Okular::FormField::FormSignature );
+
+    Okular::FormFieldSignature *sf = static_cast< Okular::FormFieldSignature * >( pageFields.first() );
+    QCOMPARE( sf->signatureType(), Okular::FormFieldSignature::AdbePkcs7detached );
+}
+
+
+QTEST_MAIN( SignatureFormTest )
+#include "signatureformtest.moc"