diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index 363abc36..b7559225 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -1,43 +1,44 @@
 find_package(Qt5Test REQUIRED)
 set(test_LIBS kgpg_lib Qt5::Test)
 
 set(COMMON common.h common.cpp)
 
 function(create_test name)
 	add_executable(${name} ${ARGN} ${COMMON})
 	target_link_libraries(${name} ${test_LIBS})
 	add_test(NAME ${name} COMMAND ${name})
 	set_property(TEST ${name} PROPERTY ENVIRONMENT
 		"XDG_CONFIG_HOME=${CMAKE_BINARY_DIR}/tests")
 	set_property(TEST ${name} PROPERTY RUN_SERIAL TRUE) #since gpg config home is shared between each test
 	add_dependencies(${name} test-data)
 endfunction()
 
 create_test(kgpg-import kgpgimport.h kgpgimport.cpp)
 create_test(kgpg-verify kgpgverify.h kgpgverify.cpp)
+create_test(kgpg-change-trust kgpgchangetrust.h kgpgchangetrust.cpp)
 
 set(GpgConf .gnupg/gpg.conf)
 set(KgpgConf kgpgrc)
 set(Keys
 	keys/kgpgtest_BA7695F3C550DF14.asc
 	keys/kgpgtest_BA7695F3C550DF14.pass
 	keys/kgpgtest_BA7695F3C550DF14_pub.asc
 	keys/signed_bad_sig
 	keys/signed_text
 	keys/encrypted_text.txt
 	keys/encrypted_text_hide_key_id.txt
 )
 
 add_custom_target(test-data)
 add_custom_command(TARGET test-data  PRE_BUILD
 	COMMAND ${CMAKE_COMMAND} -E
 	copy_directory ${CMAKE_SOURCE_DIR}/tests/.gnupg ${CMAKE_BINARY_DIR}/tests/gnupg)
 
 add_custom_command(TARGET test-data  PRE_BUILD
 	COMMAND ${CMAKE_COMMAND} -E
 	copy_directory ${CMAKE_SOURCE_DIR}/tests/keys ${CMAKE_BINARY_DIR}/tests/keys)
 
 add_custom_command(TARGET test-data  PRE_BUILD
 	COMMAND ${CMAKE_COMMAND} -E
 	copy ${CMAKE_SOURCE_DIR}/tests/kgpgrc
 	${CMAKE_BINARY_DIR}/tests/kgpgrc)
diff --git a/tests/kgpgchangetrust.cpp b/tests/kgpgchangetrust.cpp
new file mode 100644
index 00000000..a5ec7f99
--- /dev/null
+++ b/tests/kgpgchangetrust.cpp
@@ -0,0 +1,39 @@
+#include "kgpgchangetrust.h"
+#include "../transactions/kgpgchangetrust.h"
+#include "../kgpginterface.h"
+#include "common.h"
+
+#include <QLatin1String>
+#include <QSignalSpy>
+
+void KGpgChangeTrustTest::init()
+{
+	QVERIFY(resetGpgConf());
+}
+
+void KGpgChangeTrustTest::testChangeTrust()
+{
+	QFETCH(gpgme_validity_t, target_trust);
+	QLatin1String keyID("BA7695F3C550DF14");
+	addGpgKey(QLatin1String("keys/kgpgtest_BA7695F3C550DF14.asc"));
+	KGpgChangeTrust *transaction = new KGpgChangeTrust(this, keyID, target_trust);
+	QSignalSpy spy(transaction, &KGpgChangeTrust::done);
+	QObject::connect(transaction, &KGpgChangeTrust::done,
+			 [](int result) { QCOMPARE(result, KGpgTransaction::TS_OK); });
+	transaction->start();
+	QVERIFY(spy.wait());
+	KgpgCore::KgpgKeyList keyList = KgpgInterface::readPublicKeys(QStringList(keyID));
+	QCOMPARE(keyList.first().ownerTrust(), target_trust);
+}
+
+void KGpgChangeTrustTest::testChangeTrust_data()
+{
+	QTest::addColumn<gpgme_validity_t>("target_trust");
+	QTest::newRow("ultimate") << GPGME_VALIDITY_ULTIMATE;
+	QTest::newRow("full") << GPGME_VALIDITY_FULL;
+	QTest::newRow("marginal") << GPGME_VALIDITY_MARGINAL;
+	QTest::newRow("never") << GPGME_VALIDITY_NEVER;
+}
+
+// #include "kgpgchangetrust.moc"
+QTEST_MAIN(KGpgChangeTrustTest)
diff --git a/tests/kgpgchangetrust.h b/tests/kgpgchangetrust.h
new file mode 100644
index 00000000..4e9ce52e
--- /dev/null
+++ b/tests/kgpgchangetrust.h
@@ -0,0 +1,16 @@
+#ifndef KGPGCHANGETRUST_TEST_H
+#define KGPGCHANGETRUST_TEST_H
+#include <gpgme.h>
+#include <QtTest/QtTest>
+
+class KGpgChangeTrustTest : public QObject {
+	Q_OBJECT
+private slots:
+	void init();
+	void testChangeTrust();
+	void testChangeTrust_data();
+
+};
+
+Q_DECLARE_METATYPE(gpgme_validity_t)
+#endif