llimageworker_test.cpp
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- /**
- * @file llimageworker_test.cpp
- * @author Merov Linden
- * @date 2009-04-28
- *
- * $LicenseInfo:firstyear=2006&license=viewergpl$
- *
- * Copyright (c) 2006-2010, Linden Research, Inc.
- *
- * Second Life Viewer Source Code
- * The source code in this file ("Source Code") is provided by Linden Lab
- * to you under the terms of the GNU General Public License, version 2.0
- * ("GPL"), unless you have obtained a separate licensing agreement
- * ("Other License"), formally executed by you and Linden Lab. Terms of
- * the GPL can be found in doc/GPL-license.txt in this distribution, or
- * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
- *
- * There are special exceptions to the terms and conditions of the GPL as
- * it is applied to this Source Code. View the full text of the exception
- * in the file doc/FLOSS-exception.txt in this software distribution, or
- * online at
- * http://secondlifegrid.net/programs/open_source/licensing/flossexception
- *
- * By copying, modifying or distributing this software, you acknowledge
- * that you have read and understood your obligations described above,
- * and agree to abide by those obligations.
- *
- * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
- * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
- * COMPLETENESS OR PERFORMANCE.
- * $/LicenseInfo$
- */
- // Precompiled header: almost always required for newview cpp files
- #include <list>
- #include <map>
- #include <algorithm>
- // Class to test
- #include "../llimageworker.h"
- // For timer class
- #include "../llcommon/lltimer.h"
- // Tut header
- #include "../test/lltut.h"
- // -------------------------------------------------------------------------------------------
- // Stubbing: Declarations required to link and run the class being tested
- // Notes:
- // * Add here stubbed implementation of the few classes and methods used in the class to be tested
- // * Add as little as possible (let the link errors guide you)
- // * Do not make any assumption as to how those classes or methods work (i.e. don't copy/paste code)
- // * A simulator for a class can be implemented here. Please comment and document thoroughly.
- LLImageBase::LLImageBase() {}
- LLImageBase::~LLImageBase() {}
- void LLImageBase::dump() { }
- void LLImageBase::sanityCheck() { }
- void LLImageBase::deleteData() { }
- U8* LLImageBase::allocateData(S32 size) { return NULL; }
- U8* LLImageBase::reallocateData(S32 size) { return NULL; }
- LLImageRaw::LLImageRaw(U16 width, U16 height, S8 components) { }
- LLImageRaw::~LLImageRaw() { }
- void LLImageRaw::deleteData() { }
- U8* LLImageRaw::allocateData(S32 size) { return NULL; }
- U8* LLImageRaw::reallocateData(S32 size) { return NULL; }
- // End Stubbing
- // -------------------------------------------------------------------------------------------
- // -------------------------------------------------------------------------------------------
- // TUT
- // -------------------------------------------------------------------------------------------
- namespace tut
- {
- // Test wrapper declarations
- // Note: We derive the responder class for 2 reasons:
- // 1. It's a pure virtual class and we can't compile without completed() being implemented
- // 2. We actually need a responder to test that the thread work test completed
- // We implement this making no assumption on what's done in the thread or worker
- // though, just that the responder's completed() method is called in the end.
- // Note on responders: responders are ref counted and *will* be deleted by the request they are
- // attached to when the queued request is deleted. The recommended way of using them is to
- // create them when creating a request, put a callback method in completed() and not rely on
- // anything to survive in the responder object once completed() has been called. Let the request
- // do the deletion and clean up itself.
- class responder_test : public LLImageDecodeThread::Responder
- {
- public:
- responder_test(bool* res)
- {
- done = res;
- *done = false;
- }
- virtual void completed(bool success, LLImageRaw* raw, LLImageRaw* aux)
- {
- *done = true;
- }
- private:
- // This is what can be thought of as the minimal implementation of a responder
- // Done will be switched to true when completed() is called and can be tested
- // outside the responder. A better way of doing this is to store a callback here.
- bool* done;
- };
- // Test wrapper declaration : decode thread
- struct imagedecodethread_test
- {
- // Instance to be tested
- LLImageDecodeThread* mThread;
- // Constructor and destructor of the test wrapper
- imagedecodethread_test()
- {
- mThread = NULL;
- }
- ~imagedecodethread_test()
- {
- delete mThread;
- }
- };
- // Test wrapper declaration : image worker
- // Note: this class is not meant to be instantiated outside an LLImageDecodeThread instance
- // but it's not a bad idea to get its public API a good shake as part of a thorough unit test set.
- // Some gotcha with the destructor though (see below).
- struct imagerequest_test
- {
- // Instance to be tested
- LLImageDecodeThread::ImageRequest* mRequest;
- bool done;
- // Constructor and destructor of the test wrapper
- imagerequest_test()
- {
- done = false;
- mRequest = new LLImageDecodeThread::ImageRequest(0, 0,
- LLQueuedThread::PRIORITY_NORMAL, 0, FALSE,
- new responder_test(&done));
- }
- ~imagerequest_test()
- {
- // We should delete the object *but*, because its destructor is protected, that cannot be
- // done from outside an LLImageDecodeThread instance... So we leak memory here... It's fine...
- //delete mRequest;
- }
- };
- // Tut templating thingamagic: test group, object and test instance
- typedef test_group<imagedecodethread_test> imagedecodethread_t;
- typedef imagedecodethread_t::object imagedecodethread_object_t;
- tut::imagedecodethread_t tut_imagedecodethread("imagedecodethread");
- typedef test_group<imagerequest_test> imagerequest_t;
- typedef imagerequest_t::object imagerequest_object_t;
- tut::imagerequest_t tut_imagerequest("imagerequest");
- // ---------------------------------------------------------------------------------------
- // Test functions
- // Notes:
- // * Test as many as you possibly can without requiring a full blown simulation of everything
- // * The tests are executed in sequence so the test instance state may change between calls
- // * Remember that you cannot test private methods with tut
- // ---------------------------------------------------------------------------------------
- // ---------------------------------------------------------------------------------------
- // Test the LLImageDecodeThread interface
- // ---------------------------------------------------------------------------------------
- //
- // Note on Unit Testing Queued Thread Classes
- //
- // Since methods on such a class are called on a separate loop and that we can't insert tut
- // ensure() calls in there, we exercise the class with 2 sets of tests:
- // - 1: Test as a single threaded instance: We declare the class but ask for no thread
- // to be spawned (easy with LLThreads since there's a boolean argument on the constructor
- // just for that). We can then unit test each public method like we do on a normal class.
- // - 2: Test as a threaded instance: We let the thread launch and check that its external
- // behavior is as expected (i.e. it runs, can accept a work order and processes
- // it). Typically though there's no guarantee that this exercises all the methods of the
- // class which is why we also need the previous "non threaded" set of unit tests for
- // complete coverage.
- //
- // ---------------------------------------------------------------------------------------
- template<> template<>
- void imagedecodethread_object_t::test<1>()
- {
- // Test a *non threaded* instance of the class
- mThread = new LLImageDecodeThread(false);
- ensure("LLImageDecodeThread: non threaded constructor failed", mThread != NULL);
- // Test that we start with an empty list right at creation
- ensure("LLImageDecodeThread: non threaded init state incorrect", mThread->tut_size() == 0);
- // Insert something in the queue
- bool done = false;
- LLImageDecodeThread::handle_t decodeHandle = mThread->decodeImage(NULL, LLQueuedThread::PRIORITY_NORMAL, 0, FALSE, new responder_test(&done));
- // Verifies we got a valid handle
- ensure("LLImageDecodeThread: non threaded decodeImage(), returned handle is null", decodeHandle != 0);
- // Verifies that we do now have something in the queued list
- ensure("LLImageDecodeThread: non threaded decodeImage() insertion in threaded list failed", mThread->tut_size() == 1);
- // Trigger queue handling "manually" (on a threaded instance, this is done on the thread loop)
- S32 res = mThread->update(0);
- // Verifies that we successfully handled the list
- ensure("LLImageDecodeThread: non threaded update() list handling test failed", res == 0);
- // Verifies that the list is now empty
- ensure("LLImageDecodeThread: non threaded update() list emptying test failed", mThread->tut_size() == 0);
- }
- template<> template<>
- void imagedecodethread_object_t::test<2>()
- {
- // Test a *threaded* instance of the class
- mThread = new LLImageDecodeThread(true);
- ensure("LLImageDecodeThread: threaded constructor failed", mThread != NULL);
- // Test that we start with an empty list right at creation
- ensure("LLImageDecodeThread: threaded init state incorrect", mThread->tut_size() == 0);
- // Insert something in the queue
- bool done = false;
- LLImageDecodeThread::handle_t decodeHandle = mThread->decodeImage(NULL, LLQueuedThread::PRIORITY_NORMAL, 0, FALSE, new responder_test(&done));
- // Verifies we get back a valid handle
- ensure("LLImageDecodeThread: threaded decodeImage(), returned handle is null", decodeHandle != 0);
- // Wait a little so to simulate the main thread doing something on its main loop...
- ms_sleep(500); // 500 milliseconds
- // Verifies that the responder has *not* been called yet in the meantime
- ensure("LLImageDecodeThread: responder creation failed", done == false);
- // Ask the thread to update: that means tells the queue to check itself and creates work requests
- mThread->update(1);
- // Wait till the thread has time to handle the work order (though it doesn't do much per work order...)
- const U32 INCREMENT_TIME = 500; // 500 milliseconds
- const U32 MAX_TIME = 20 * INCREMENT_TIME; // Do the loop 20 times max, i.e. wait 10 seconds but no more
- U32 total_time = 0;
- while ((done == false) && (total_time < MAX_TIME))
- {
- ms_sleep(INCREMENT_TIME);
- total_time += INCREMENT_TIME;
- }
- // Verifies that the responder has now been called
- ensure("LLImageDecodeThread: threaded work unit not processed", done == true);
- }
- // ---------------------------------------------------------------------------------------
- // Test the LLImageDecodeThread::ImageRequest interface
- // ---------------------------------------------------------------------------------------
- template<> template<>
- void imagerequest_object_t::test<1>()
- {
- // Test that we start with a correct request at creation
- ensure("LLImageDecodeThread::ImageRequest::ImageRequest() constructor test failed", mRequest->tut_isOK());
- bool res = mRequest->processRequest();
- // Verifies that we processed the request successfully
- ensure("LLImageDecodeThread::ImageRequest::processRequest() processing request test failed", res == true);
- // Check that we can call the finishing call safely
- try {
- mRequest->finishRequest(false);
- } catch (...) {
- fail("LLImageDecodeThread::ImageRequest::finishRequest() test failed");
- }
- }
- }