144 lines
5.2 KiB
C++
144 lines
5.2 KiB
C++
/*
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SessionElementQuery(Test) - querying and retrieving elements from the session
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Copyright (C)
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2010, Hermann Vosseler <Ichthyostega@web.de>
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**Lumiera** is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2 of the License, or (at your
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option) any later version. See the file COPYING for further details.
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* *****************************************************************/
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/** @file session-element-query-test.cpp
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** unit test \ref SessionElementQuery_test
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*/
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#include "lib/test/run.hpp"
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#include "steam/mobject/session/test-scopes.hpp"
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#include "steam/mobject/session/element-query.hpp"
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#include "steam/mobject/session/scope-path.hpp"
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#include "steam/mobject/session/scope.hpp"
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#include "steam/mobject/mobject-ref.hpp"
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#include "lib/util.hpp"
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#include <functional>
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#include <string>
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namespace steam {
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namespace mobject {
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namespace session {
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namespace test {
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using std::placeholders::_1;
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using std::function;
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using std::bind;
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using std::string;
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using util::contains;
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namespace { // helpers and shortcuts....
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typedef Placement<DummyMO> const& PDummy; // note const& required by ElementQuery filter definition
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/** a filter predicate to pick some objects from a resultset,
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* based on string match with the element's self-display string.
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* @note the query system allows us to use the specific API of DummyMO,
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* without the need for any cast. It is sufficient to declare
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* a suitable signature on the query predicate! */
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inline function<bool(PDummy)>
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elementID_contains (string expectedText)
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{
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return [=] (PDummy candidate)
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{
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REQUIRE (candidate.isValid());
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string desc(candidate->operator string());
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return contains(desc, expectedText);
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};
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}
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}
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/******************************************************************************************//**
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* @test cover the part of the session API allowing to retrieve specific elements by query.
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* - This test first picks an object from the test session, where the filter predicate
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* utilises the specific MObject subclass (here DummyMO).
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* - Then re-fetches the same object using a different filter
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* (based on the specific random int-ID).
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* - Next the element is removed from the test session to verify the "not found" result
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* - finally we re-attach another placement of the same underlying MObject instance
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* at a different location in the test session and verify we can again pick this
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* element with the specific query.
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*
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* @see mobject::session::ElementQuery
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* @see mobject::session::ContentsQuery
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* @see scope-query-test.cpp
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*/
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class SessionElementQuery_test : public Test
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{
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virtual void
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run (Arg)
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{
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// Prepare an (test)Index (dummy "session")
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PPIdx testSession (build_testScopes());
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ElementQuery queryAPI;
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MORef<DummyMO> dummy1 = queryAPI.pick (elementID_contains("MO2"));
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CHECK (dummy1);
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CHECK (dummy1->isValid());
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INFO (test, "Location in Tree: %s", cStr(ScopePath(dummy1.getPlacement())));
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string elementID = dummy1->operator string();
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CHECK (contains (elementID, "MO2"));
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string specificID = elementID.substr(10); // should contain the random int-ID
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MORef<DummyMO> dummy2;
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CHECK (!dummy2);
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dummy2 = queryAPI.pick (elementID_contains(specificID));
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CHECK (dummy2); // found the same object again
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CHECK (dummy2->isValid());
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CHECK (dummy2 == dummy1);
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// put aside a new handle holding onto the MObject
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PDum newPlacement(dummy1.getPlacement());
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CHECK (testSession->contains(dummy1));
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CHECK (!testSession->contains(newPlacement));
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// and now remove the placement and all contained elements
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testSession->clear (dummy1);
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CHECK (!testSession->contains(dummy1));
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MORef<DummyMO> findAgain = queryAPI.pick (elementID_contains(specificID));
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CHECK (!findAgain); // empty result because searched element was removed from session...
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MORef<DummyMO> otherElm = queryAPI.pick (elementID_contains("MO21"));
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CHECK (otherElm); // now pick just some other arbitrary element
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testSession->insert(newPlacement, otherElm);
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dummy2 = queryAPI.pick (elementID_contains(specificID));
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CHECK (dummy2);
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CHECK (dummy2 != dummy1);
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CHECK (dummy2 != newPlacement);
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CHECK (isSharedPointee(newPlacement, dummy2.getPlacement()));
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CHECK (Scope::containing (dummy2.getRef()) == Scope (otherElm));
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INFO (test, "New treelocation: %s", cStr(ScopePath(dummy2.getPlacement())));
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}
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};
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/** Register this test class... */
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LAUNCHER (SessionElementQuery_test, "function session");
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}}}} // namespace steam::mobject::session::test
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