gecko-dev/xpcom/sample/nsTestSample.cpp

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: NPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Netscape Public License
* Version 1.1 (the "License"); you may not use this file except in
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* http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Suresh Duddi <dp@netscape.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
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* ***** END LICENSE BLOCK ***** */
/**
* A Test application that exercises the sample moudule. This is intented
* to be a sample application for using xpcom standalone.
*/
#include <nsISample.h>
#include <nsIServiceManager.h>
#include <nsXPIDLString.h>
#define NS_SAMPLE_CONTRACTID "@mozilla.org/sample;1"
int
main(void)
{
nsresult rv;
// Initialize XPCOM
rv = NS_InitXPCOM2(nsnull, nsnull, nsnull);
if (NS_FAILED(rv))
{
printf("ERROR: XPCOM intialization error [%x].\n", rv);
return -1;
}
// Do Autoreg to make sure our component is registered. The real way of
// doing this is running the xpcom registraion tool, regxpcom, at install
// time to get components registered and not make this call everytime.
// Ignore return value.
//
// Here we use the global component manager. Note that this will cause
// linkage dependency to XPCOM library. We feel that linkage dependency
// to XPCOM is inevitable and this is simpler to code.
// To break free from such dependencies, we can GetService() the component
// manager from the service manager that is returned from NS_InitXPCOM().
// We feel that linkage dependency to XPCOM library is inevitable.
(void) nsComponentManager::AutoRegister(nsIComponentManager::NS_Startup, nsnull);
// Create an instance of our component
nsCOMPtr<nsISample> mysample = do_CreateInstance(NS_SAMPLE_CONTRACTID, &rv);
if (NS_FAILED(rv))
{
printf("ERROR: Cannot create instance of component " NS_SAMPLE_CONTRACTID " [%x].\n"
"Debugging hint:\n"
"\tsetenv NSPR_LOG_MODULES nsComponentManager:5\n"
"\tsetenv NSPR_LOG_FILE xpcom.log\n"
"\t./nsTestSample\n"
"\t<check the contents for xpcom.log for possible cause of error>.\n",
rv);
return -2;
}
// Call methods on our sample to test it out.
rv = mysample->WriteValue("Inital print:");
if (NS_FAILED(rv))
{
printf("ERROR: Calling nsISample::WriteValue() [%x]\n", rv);
return -3;
}
const char *testValue = "XPCOM defies gravity";
rv = mysample->SetValue(testValue);
if (NS_FAILED(rv))
{
printf("ERROR: Calling nsISample::SetValue() [%x]\n", rv);
return -3;
}
printf("Set value to: %s\n", testValue);
nsXPIDLCString str;
rv = mysample->GetValue(getter_Copies(str));
if (NS_FAILED(rv))
{
printf("ERROR: Calling nsISample::GetValue() [%x]\n", rv);
return -3;
}
if (strcmp(str, testValue))
{
printf("Test FAILED.\n");
return -4;
}
rv = mysample->WriteValue("Final print :");
printf("Test passed.\n");
// Shutdown XPCOM
NS_ShutdownXPCOM(nsnull);
return 0;
}