added a first very simple test

tests/executables_src/testAccessors.cc

+/*
+ * testAccessors.cc
+ *
+ *  Created on: Jun 21, 2016
+ *      Author: Martin Hierholzer
+ */
+
+#include <boost/test/included/unit_test.hpp>
+
+#include "ScalarAccessor.h"
+#include "ApplicationModule.h"
+
+using namespace boost::unit_test_framework;
+namespace ctk = ChimeraTK;
+
+class AccessorTest {
+  public:
+    //void testExceptions();
+    void testScalarPushAccessor();
+};
+
+class AccessorTestSuite : public test_suite {
+  public:
+    AccessorTestSuite() : test_suite("Test suite for accessors") {
+      boost::shared_ptr<AccessorTest> test(new AccessorTest);
+
+      add( BOOST_CLASS_TEST_CASE(&AccessorTest::testScalarPushAccessor, test) );
+    }
+};
+
+test_suite* init_unit_test_suite(int /*argc*/, char * /*argv*/ []) {
+  framework::master_test_suite().p_name.value = "Accessor test suite";
+  framework::master_test_suite().add(new AccessorTestSuite());
+
+  return NULL;
+}
+
+class TestModule : public ctk::ApplicationModule {
+  public:
+    SCALAR_ACCESSOR(int, consumingPushInt, ctk::VariableDirection::consuming, "MV/m", ctk::UpdateMode::push);
+    SCALAR_ACCESSOR(int, feedingPushInt, ctk::VariableDirection::feeding, "MV/m", ctk::UpdateMode::push);
+
+    void mainLoop() {}
+};
+
+class TestApplication : public ctk::Application {
+  public:
+    using Application::Application;
+    using Application::makeConnections;
+    void initialise() {}
+};
+TestApplication app("Test Suite");
+
+void AccessorTest::testScalarPushAccessor() {
+
+  TestModule testModule;
+
+  testModule.feedingPushInt.connectTo(testModule.consumingPushInt);
+  app.makeConnections();
+
+  testModule.consumingPushInt = 0;
+  testModule.feedingPushInt = 42;
+  BOOST_CHECK(testModule.consumingPushInt == 0);
+  testModule.feedingPushInt.write();
+  BOOST_CHECK(testModule.consumingPushInt == 0);
+  testModule.consumingPushInt.read();
+  BOOST_CHECK(testModule.consumingPushInt == 42);
+
+
+
+
+}