funchelpers: Add a way to invoke a callable with a list of arguments

[quassel.git] / tests / common / funchelperstest.cpp

diff --git a/tests/common/funchelperstest.cpp b/tests/common/funchelperstest.cpp
new file mode 100644 (file)
index 0000000..14a7837
--- /dev/null
+++ b/tests/common/funchelperstest.cpp
@@ -0,0 +1,77 @@
+/***************************************************************************
+ *   Copyright (C) 2005-2018 by the Quassel Project                        *
+ *   devel@quassel-irc.org                                                 *
+ *                                                                         *
+ *   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) version 3.                                           *
+ *                                                                         *
+ *   This program is distributed in the hope that it will be useful,       *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+ *   GNU General Public License for more details.                          *
+ *                                                                         *
+ *   You should have received a copy of the GNU General Public License     *
+ *   along with this program; if not, write to the                         *
+ *   Free Software Foundation, Inc.,                                       *
+ *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.         *
+ ***************************************************************************/
+
+#include "testglobal.h"
+
+#include <QVariantList>
+
+#include "funchelpers.h"
+
+TEST(FuncHelpersTest, invokeWithArgsList)
+{
+    int intVal{};
+    QString stringVal{};
+
+    auto callable = [&intVal, &stringVal](int i, const QString& s)
+    {
+        intVal = i;
+        stringVal = s;
+    };
+
+    // Good case
+    {
+        QVariantList argsList{42, "Hello World"};
+        ASSERT_TRUE(invokeWithArgsList(callable, argsList));
+        EXPECT_EQ(42, intVal);
+        EXPECT_EQ("Hello World", stringVal);
+    }
+
+    // Too many arguments
+    {
+        QVariantList argsList{23, "Hi Universe", 2.3};
+        ASSERT_FALSE(invokeWithArgsList(callable, argsList));
+        // Values shouldn't have changed
+        EXPECT_EQ(42, intVal);
+        EXPECT_EQ("Hello World", stringVal);
+    }
+
+    // Too few arguments
+    {
+        QVariantList argsList{23};
+        ASSERT_FALSE(invokeWithArgsList(callable, argsList));
+        // Values shouldn't have changed
+        EXPECT_EQ(42, intVal);
+        EXPECT_EQ("Hello World", stringVal);
+    }
+
+    // Cannot convert argument type
+    {
+        // Ensure type cannot be converted
+        QVariantList wrong{"Foo", "Bar"};
+        QVariant v{wrong};
+        ASSERT_FALSE(v.canConvert<QString>());
+
+        QVariantList argsList{23, wrong};
+        ASSERT_FALSE(invokeWithArgsList(callable, argsList));
+        // Values shouldn't have changed
+        EXPECT_EQ(42, intVal);
+        EXPECT_EQ("Hello World", stringVal);
+    }
+}