Index: tests/protocols/CMakeLists.txt
===================================================================
--- tests/protocols/CMakeLists.txt
+++ tests/protocols/CMakeLists.txt
@@ -1 +1,2 @@
 add_subdirectory(oscar)
+add_subdirectory(qq)
Index: tests/protocols/qq/CMakeLists.txt
===================================================================
--- /dev/null
+++ tests/protocols/qq/CMakeLists.txt
@@ -0,0 +1,21 @@
+find_package(Qt5 REQUIRED COMPONENTS Test)
+include_directories(
+    ${CMAKE_SOURCE_DIR}/protocols/qq
+    ${CMAKE_SOURCE_DIR}/protocols/qq/icons
+    ${CMAKE_SOURCE_DIR}/protocols/qq/ui
+    ${KOPETE_SOURCE_DIR}
+)
+
+set(
+    QQ_TEST_LIBRARIES
+    KF5::KDELibs4Support
+    Qt5::Test
+    ${CMAKE_SOURCE_DIR}/protocols/qq/crypt.cpp
+)
+
+# Test for crypt(TEA)
+set(qqcrypttest_SRCS qqcrypttest.cpp)
+ecm_add_test(
+    ${qqcrypttest_SRCS}
+    LINK_LIBRARIES ${QQ_TEST_LIBRARIES}
+)
Index: tests/protocols/qq/qqcrypttest.cpp
===================================================================
--- /dev/null
+++ tests/protocols/qq/qqcrypttest.cpp
@@ -0,0 +1,65 @@
+#include "crypt.h"
+
+#include <QtTest>
+#include <QObject>
+
+Q_DECLARE_METATYPE(unsigned int*);
+
+class QQCryptTest : public QObject
+{
+    Q_OBJECT
+private slots:
+    void CryptTest();
+    void CryptTest_data();
+    unsigned int* Crypt_Data(char*);
+    unsigned int* Crypt_Key(char*);
+};
+
+/* The data is going to decrypted */
+unsigned int* QQCryptTest::Crypt_Data(char* x)
+{
+    static unsigned int d[2];
+    d[0] = x[0];
+    d[1] = x[1];
+    return d;
+}
+
+/* Key which is used for encryption and decryption */
+unsigned int* QQCryptTest::Crypt_Key(char* x)
+{
+    static unsigned int k[4];
+    k[0] = x[0];
+    k[1] = x[1];
+    k[2] = x[2];
+    k[3] = x[3];
+    return k;
+}
+
+void QQCryptTest::CryptTest_data()
+{
+    QTest::addColumn<unsigned int*>("data");
+    QTest::addColumn<unsigned int*>("key");
+
+    QTest::newRow("1") << QQCryptTest::Crypt_Data("ad") << QQCryptTest::Crypt_Key("abcd");
+    QTest::newRow("2") << QQCryptTest::Crypt_Data("xy") << QQCryptTest::Crypt_Key("wxyz");
+}
+
+void QQCryptTest::CryptTest()
+{
+    QFETCH(unsigned int*, data);
+    QFETCH(unsigned int*, key);
+
+    unsigned int encrypted[2]={0,0};/* encrypted data && input of the TEA::decipher function */
+    unsigned int decrypted[2]={0,0};/* decrypted data */
+
+    TEA::encipher(data, key, encrypted);
+    TEA::decipher(encrypted, key, decrypted);
+
+    QVERIFY(data[0] != encrypted[0]);
+    QVERIFY(data[1] != encrypted[1]);
+    QCOMPARE(data[0], decrypted[0]);
+    QCOMPARE(data[1], decrypted[1]);
+}
+
+QTEST_MAIN(QQCryptTest)
+#include "qqcrypttest.moc"