qt, tests: Add check for supported versions

* lang/qt/tests/t-encrypt.cpp (decryptSupported): Moved to
t-support as loopbackSupported.
* lang/qt/tests/t-remarks.cpp: Check for loopbackSupported.
* lang/qt/tests/t-support.cpp, lang/qt/tests/t-support.h
(loopbackSupported): New.

--
This ensures that the tests do not fail with GnuPG 2.0.x

lang/qt/tests/t-encrypt.cpp

@@ -57,22 +57,7 @@
 using namespace QGpgME;
 using namespace GpgME;
 
-static bool decryptSupported()
-{
-    /* With GnuPG 2.0.x (at least 2.0.26 by default on jessie)
-     * the passphrase_cb does not work. So the test popped up
-     * a pinentry. So tests requiring decryption don't work. */
-    static auto version = GpgME::engineInfo(GpgME::GpgEngine).engineVersion();
-    if (version < "2.0.0") {
-        /* With 1.4 it just works */
-        return true;
-    }
-    if (version < "2.1.0") {
-        /* With 2.1 it works with loopback mode */
-        return false;
-    }
-    return true;
-}
+
 
 class EncryptionTest : public QGpgMETest
 {
@@ -103,7 +88,7 @@ private Q_SLOTS:
         QVERIFY(cipherString.startsWith("-----BEGIN PGP MESSAGE-----"));
 
         /* Now decrypt */
-        if (!decryptSupported()) {
+        if (!loopbackSupported()) {
             return;
         }
         auto decJob = openpgp()->decryptJob();
@@ -174,7 +159,7 @@ private Q_SLOTS:
 
     void testSymmetricEncryptDecrypt()
     {
-        if (!decryptSupported()) {
+        if (!loopbackSupported()) {
             return;
         }
         auto job = openpgp()->encryptJob();
@@ -207,7 +192,7 @@ private Q_SLOTS:
     void testEncryptDecryptNowrap()
     {
         /* Now decrypt */
-        if (!decryptSupported()) {
+        if (!loopbackSupported()) {
             return;
         }
         auto listjob = openpgp()->keyListJob(false, false, false);
@@ -235,7 +220,7 @@ private Q_SLOTS:
         QVERIFY(cipherString.startsWith("-----BEGIN PGP MESSAGE-----"));
 
         /* Now decrypt */
-        if (!decryptSupported()) {
+        if (!loopbackSupported()) {
             return;
         }
 
@@ -272,7 +257,7 @@ private:
      * So this test is disabled until gnupg(?) is fixed for this. */
     void testMixedEncryptDecrypt()
     {
-        if (!decryptSupported()) {
+        if (!loopbackSupported()) {
             return;
         }
         auto listjob = openpgp()->keyListJob(false, false, false);

lang/qt/tests/t-remarks.cpp

@@ -62,6 +62,9 @@ public:
     // case in the UI
     void testRemarkOwnKey()
     {
+        if (!loopbackSupported()) {
+            return;
+        }
         // Get the signing key (alfa)
         auto ctx = Context::create(OpenPGP);
         QVERIFY (ctx);
@@ -109,6 +112,9 @@ private Q_SLOTS:
 
     void testRemarkReplaceSingleUIDExportable()
     {
+        if (!loopbackSupported()) {
+            return;
+        }
         // Get the signing key (alfa)
         auto ctx = Context::create(OpenPGP);
         QVERIFY (ctx);
@@ -197,6 +203,9 @@ private Q_SLOTS:
 
     void testMultipleRemarks()
     {
+        if (!loopbackSupported()) {
+            return;
+        }
         // Get the signing key1 (alfa)
         auto ctx = Context::create(OpenPGP);
         QVERIFY (ctx);
@@ -285,6 +294,9 @@ private Q_SLOTS:
 
     void testRemarkReplaceSingleUID()
     {
+        if (!loopbackSupported()) {
+            return;
+        }
         // Get the signing key (alfa)
         auto ctx = Context::create(OpenPGP);
         QVERIFY (ctx);
@@ -372,6 +384,9 @@ private Q_SLOTS:
 
     void testRemarkReplaceMultiUID()
     {
+        if (!loopbackSupported()) {
+            return;
+        }
         // Get the signing key (alfa)
         auto ctx = Context::create(OpenPGP);
         QVERIFY (ctx);

lang/qt/tests/t-support.cpp

@@ -44,6 +44,8 @@
 #include <QObject>
 #include <QDir>
 
+#include "engineinfo.h"
+
 void QGpgMETest::initTestCase()
 {
     GpgME::initializeLibrary();
@@ -98,5 +100,21 @@ void killAgent(const QString& dir)
     proc.waitForFinished();
 }
 
+bool loopbackSupported()
+{
+    /* With GnuPG 2.0.x (at least 2.0.26 by default on jessie)
+     * the passphrase_cb does not work. So the test popped up
+     * a pinentry. So tests requiring decryption don't work. */
+    static auto version = GpgME::engineInfo(GpgME::GpgEngine).engineVersion();
+    if (version < "2.0.0") {
+        /* With 1.4 it just works */
+        return true;
+    }
+    if (version < "2.1.0") {
+        /* With 2.1 it works with loopback mode */
+        return false;
+    }
+    return true;
+}
 
 #include "t-support.hmoc"

lang/qt/tests/t-support.h

@@ -53,6 +53,8 @@ public:
 } // namespace GpgME
 
 void killAgent(const QString &dir = qgetenv("GNUPGHOME"));
+/* Is the passphrase Provider / loopback Supported */
+bool loopbackSupported();
 
 class QGpgMETest : public QObject
 {