/*

* Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description: 

* Exercises the test implementation of the session count server,

* to test the base SCS functionality.

*

*/

/**

 @file

*/

#include <e32ldr.h>

#include <e32ldr_private.h>

#include <f32file.h>

#include "rtestwrapper.h"

#include <e32def_private.h>

#include <scs/scscommon.h>

#include "scstestcommon.h"

#include "scstestclient.h"

const TInt KOneSecondUs = 1000 * 1000;		///< One second in microseconds.

/** Top-level test object renders stages and confirms conditions. */

static RTestWrapper test(_L("SCSTEST"));

/**

	This session handle is defined at the file level so each individual test

	does not have to connect to the server.

 */

static RScsTestSession sTestSession;

/**

	This subsession handle is defined at the file level so each individual test

	does not have to connect to the server and create a subssesion.

 */

static RScsTestSubsession sTestSubsession;

/** Arbitrary integer value used to construct subsession. */

static const TInt KSubsessValue = 10;

static void LetServerRun()

/**

	Sleep for 100ms so the server thread can run to clean up,

	terminate, or just process the last request which it was sent.

 */

	{

	User::After(100 * 1000);

	}

// -------- OOM testing --------

static void RunOomTest(TInt (*aAllocFunc)(), void (*aFreeFunc)())

/**

	Run the supplied allocator function while forcing OOM on the server side.

	On failure, this functions tests that the server heap is balanced.  On

	success, it runs the free function and also tests that the server heap is

	balanced.

	@param	aAllocFunc		Function which allocates resources on the server heap.

	@param	aFreeFunc		Frees the resources allocated with aAllocFunc.  It should

							only be necessary to call this function if aAllocFunc

							succeeds.  This argument can be NULL if there is no

							corresponding free function.

 */

	{

	TInt r = KErrNoMemory;

	for (TInt i = 1; r == KErrNoMemory; ++i)

		{

		sTestSession.SetServerHeapFail(i);

		r = aAllocFunc();

		test(r == KErrNone || r == KErrNoMemory);

		if (r == KErrNone && aFreeFunc != NULL)	

			aFreeFunc();

		sTestSession.ResetServerHeapFail();

		}

	}

// -------- panic testing --------

/**

	To test that a client is panicked, pass a function with this

	signature to TestPanic.  It will be called from a new thread.

	@see TestPanic

 */

typedef void (*TPanicFunc)(RScsTestSession&);

static void ConfirmPanicReason(RThread aThread, TInt aExpectedReason)

/**

	Test the supplied thread was panicked with category

	ScsImpl::KScsClientPanicCat and the supplied reason.

	@param	aThread			Panicked thread.

	@param	aExpectedReason	The thread should have been panicked with

							this reason.

	@see ScsImpl::KScsClientPanicCat

 */

	{

	TExitType exitType = aThread.ExitType();

	TExitCategoryName exitCat = aThread.ExitCategory();

	TInt exitReason = aThread.ExitReason();

	test(exitType == EExitPanic);

	test(exitCat == ScsImpl::KScsClientPanicCat);

	test(exitReason == aExpectedReason);

	}

static TInt TestPanicEntrypoint(TAny* aPtr)

/**

	This entrypoint is called by the panic thread.  The

	function connects to the SCS test server and passes

	the handle to the function that should be panicked.

	@param	aPtr			Standard entrypoint argument.  This is actually

							a pointer to the function to call with the connected

							session.

	@return					KErrNone.  Required to satisfy entrypoint signature.

 */

	{

	RScsTestSession s;

	TInt r = s.Connect();

	test(r == KErrNone);

	TPanicFunc f = TAnyPtrToFuncPtr<TPanicFunc>(aPtr);

	f(s);

	test(EFalse);			// should not reach here

	return KErrNone;

	}

static void TestPanic(TPanicFunc aFunc, TInt aExpectedReason)

/**

	Create a thread which should be panicked because it will

	pass invalid data to the SCS test server.  Test the thread

	is panicked with the expected category and reason.

	@param	aFunc			Function to call from panic thread.

	@param	aExpectedReason	Reason with which the thread should

							be panicked.

 */

	{

	RThread thd;

	TInt r = thd.Create(

		_L("ScsTestPanic"), TestPanicEntrypoint,

		KDefaultStackSize, KMinHeapSize, KMinHeapSize, (TAny*) aFunc);

	test(r == KErrNone);

	TRequestStatus rs;

	thd.Rendezvous(rs);

	test(rs == KRequestPending);

	TBool jit = User::JustInTime();

	User::SetJustInTime(EFalse);

	thd.Resume();

	User::WaitForRequest(rs);

	User::SetJustInTime(jit);

	ConfirmPanicReason(thd, aExpectedReason);

	thd.Close();

	}

// -------- open / close --------

/** Handle to a session which the test code attempts to open in server-side OOM. */

RScsTestSession sOomTestSession;

static TInt OpenOomSession()

/**

	This function is invoked by RunOomTest.  It just

	attempts to connect to the SCS test server.

	@return					Return code from RScsTestSession::Connect.

	@see CloseOomSession

 */

	{

	return sOomTestSession.Connect();

	}

static void CloseOomSession()

/**

	Closes the session which was opened by OpenOomSession.

	@see OpenOomSession

	@pre OpenOomSession was successfully opened by OpenOomSession.

 */

	{

	sOomTestSession.Close();

	}

static void TestServerDeath()

	{

	test.Start(_L("TestServerDeath"));

	test.Next(_L("Starting server without shutdown timer"));

	// Create marker file to get server to run without a activity timeout

	RFs fs;

	TInt r = fs.Connect();

	test(r == KErrNone);

	(void) fs.Delete(KDisableScsTestServerTimeout());

	RFile file;

	r = file.Create(fs, KDisableScsTestServerTimeout(), EFileShareAny|EFileWrite);

	test(r == KErrNone);

	file.Close();

	// Start server

	RScsTestSession scsts;

	r = scsts.Connect();

	test(r == KErrNone);

	test.Next(_L("Checking ShutdownServer is not allowed"));

	r = scsts.ShutdownServer();

	test(r == KErrNotSupported);

	test.Next(_L("Doing an async call to check server does not attempt to restart the timer and crash"));

	TPckgBuf<TInt> x1 = 1;

	TRequestStatus rs1;

	scsts.Treble(x1, rs1);

	User::WaitForRequest(rs1);

	test.Printf(_L("NukeServer - scstestserver.exe SHOULD panic\n"));

	r = scsts.NukeServer();

	test(r == KErrServerTerminated);

	(void) fs.Delete(KDisableScsTestServerTimeout());

	fs.Close();

	scsts.Close();

	test.End();

	}

static void TestOpenClose()

/**

	Attempt to connect to the server when supplying default,

	lower, and higher version numbers.  Attempt to open a session

	in server-side OOM.

 */

	{

	test.Start(_L("TestOpenClose"));

	TInt r;

	RScsTestSession scsts;

	// default version

	r = scsts.Connect();

	test(r == KErrNone);

	scsts.Close();

	// lower-than-supported version

	TVersion v = ScsTestImpl::Version();

	--v.iMajor;

	r = scsts.Connect(v);

	test(r == KErrNone);

	scsts.Close();

	// supported version (should be same as default)

	++v.iMajor;

	r = scsts.Connect(v);

	test(r == KErrNone);

	scsts.Close();

	// greater-than-supported version

	++v.iMajor;

	r = scsts.Connect(v);

	test(r == KErrNotSupported);

	// test opening session when server running out of memory

	r = sTestSession.Connect();		// required to send OOM commands

	test(r == KErrNone);

	RunOomTest(OpenOomSession, CloseOomSession);

	sTestSession.Close();

#if 0

	// Test closing server with an out standing request

	r = scsts.Connect();

	test(r == KErrNone);

	test(r == KErrNone);

	TPckgBuf<TInt> x1 = 1;

	TRequestStatus rs1;

	scsts.Treble(x1, rs1);

	// Bypass the presession close

	RSessionBase *session = &scsts;

	session->Close();

	User::WaitForRequest(rs1);

	test(rs1 == KErrCancel);

#endif

	test.End();

	}

// -------- invalid session function --------

static void TestInvalidSessionFunction()

/**

	Send an unrecognized SCS code and confirm that it is

	rejected with KErrNotSupported.  This tests the SCS

	implementation.

	Send an unrecognized function identifier to the session

	and confirm that it is also rejected with KErrNotSupported.

	This tests the test server session implementation.

 */

	{

	test.Start(_L("TestInvalidSessionFunction"));

	TInt r;

	r = sTestSession.SendCustomFunction(ScsImpl::EScsUnused);

	test(r == KErrNotSupported);

	r = sTestSession.SendCustomFunction(ScsImpl::ECallSessionFunc | ScsTestImpl::ESessUnused);

	test(r == KErrNotSupported);

	test.End();

	}

// -------- synchronous session function --------

static void TestSyncSessionFunction()

/**

	Send a recognized function to the SCS test session,

	and confirm that it is executed correctly.

 */

	{

	test.Start(_L("TestSyncSessionFunction"));

	TInt x = 3;

	TInt r = sTestSession.Double(x);

	test(r == KErrNone);

	test(x == 6);

	test.End();

	}

// -------- asynchronous session function --------

static TInt LaunchSessionTrebleOom()

/**

	Attempt to launch an asynchronous command on a session

	under OOM conditions.

 */

	{

	TPckgBuf<TInt> x = 3;

	TRequestStatus rs;

	sTestSession.Treble(x, rs);

	User::WaitForRequest(rs);

	if (rs == KErrNone)

		{

		test(x() == 9);

		}

	return rs.Int();

	}

static void TestAsyncInvalidDescPanic(RScsTestSession& aSession)

/**

	Pass an invalid descriptor to the SCS test server.

	The current thread should be panicked.

	@param	aSession		Open session to SCS test server,

							supplied by TestPanic.

	@see TestPanic

 */

	{

	TDes8* nullDes8 = 0;

	TRequestStatus rs;

	aSession.Treble(*nullDes8, rs);

	User::WaitForRequest(rs);

	}

static void TestRequeueOutstandingPanic(RScsTestSession& aSession)

/**

	Attempt to requeue an asynchronous request which is still

	outstanding.  The current thread should be panicked.

	@param	aSession		Connected session to SCS test server.

	@see TestPanic

 */

	{

	TPckgBuf<TInt> x1 = 1;

	TRequestStatus rs1;

	aSession.Treble(x1, rs1);

	TPckgBuf<TInt> x2 = 2;

	TRequestStatus rs2;

	aSession.Treble(x2, rs2);

	User::WaitForRequest(rs1, rs2);

	User::WaitForRequest(rs1, rs2);

	}

static void TestAsyncSessionFunction()

/**

	Test asynchronous session-relative functions.

	Launch a request and wait for it to complete.

	Launch a request and cancel it.

	Launch a request with an invalid descriptor.

	Cancel a request which is not outstanding.

	Launch a request in OOM.

	Launch an asynchronous request on a session and wait

	for it to complete.

 */

	{

	test.Start(_L("TestAsyncSessionFunction"));

	TInt r;

	LaunchSessionTrebleOom();

	// test launching async request in OOM

	RunOomTest(LaunchSessionTrebleOom, NULL);

	// cancel async request

	TPckgBuf<TInt> x = 3;

	TRequestStatus rs;

	sTestSession.Treble(x, rs);

	sTestSession.CancelTreble();

	User::WaitForRequest(rs);

	test(rs == KErrCancel);

	// bad descriptor panic

	TestPanic(TestAsyncInvalidDescPanic, ScsImpl::EScsClBadDesc);

	// safely cancel async request which is not queued

	sTestSession.CancelTreble();

	// panic if requeue outstanding request

	TestPanic(TestRequeueOutstandingPanic, ScsImpl::EScsClAsyncAlreadyQueued);

	// test outstanding request cancelled when session closed with RScsSessionBase::Close

	RScsTestSession asyncSession;

	r = asyncSession.Connect();

	test(r == KErrNone);

	x() = 4;

	asyncSession.Treble(x, rs);

	asyncSession.Close();

	User::After(ScsTestImpl::KTrebleTimerDelayUs + KOneSecondUs);

	test(rs == KErrCancel);

	User::WaitForRequest(rs);

	// test outstanding request not cancelled when session closed with RSessionBase::Close

	r = asyncSession.Connect();

	test(r == KErrNone);

	x() = 4;

	asyncSession.Treble(x, rs);

	asyncSession.RSessionBase::Close();

	User::After(ScsTestImpl::KTrebleTimerDelayUs + KOneSecondUs);

	test(rs == KRequestPending);		// client request not cancelled or completed

	test.End();

	}

// -------- open / close subsession --------

/**

	This subsession handle is opened in OOM testing.

	@see OpenOomSubsession

	@see CloseOomSubsession

 */

RScsTestSubsession sOomSubsession;

static TInt OpenOomSubsession()

/**

	Attempt to open a subsession in OOM.

	@see CloseOomSubsession

	@see RunOomTest

 */

	{

	return sOomSubsession.Create(sTestSession, 10);

	}

static void CloseOomSubsession()

/**

	Free the subsession which was opened in OOM.

	@see OpenOomSubsession

	@see RunOomTest

 */

	{

	sOomSubsession.Close();

	}

static void TestOpenCloseSubsession()

/**

	Test opening and closing a subsession, including

	opening in OOM.

 */

	{

	test.Start(_L("TestOpenCloseSubsession"));

	TInt r;

	RScsTestSubsession ss;

	r = ss.Create(sTestSession, 10);

	test(r == KErrNone);

	ss.Close();

	// test creating in OOM

	RunOomTest(OpenOomSubsession, CloseOomSubsession);