genericopenlibs/cstdlib/TSTLIB/T_SPRINTF.CPP
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     1 // Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).
       
     2 // All rights reserved.
       
     3 // This component and the accompanying materials are made available
       
     4 // under the terms of "Eclipse Public License v1.0"
       
     5 // which accompanies this distribution, and is available
       
     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".
       
     7 //
       
     8 // Initial Contributors:
       
     9 // Nokia Corporation - initial contribution.
       
    10 //
       
    11 // Contributors:
       
    12 //
       
    13 // Description:
       
    14 //
       
    15  
       
    16 #include <e32test.h>
       
    17 #include <e32svr.h>
       
    18 
       
    19 #include <stdlib.h>
       
    20 #include <stdio.h>
       
    21 #include <string.h>
       
    22 
       
    23 //
       
    24 // Globals
       
    25 
       
    26 static RTest TheTest(_L("T_SPRINTF"));
       
    27 
       
    28 //
       
    29 //
       
    30 //Test macro and function
       
    31 
       
    32 static void Check(TInt aValue, TInt aLine)
       
    33 	{
       
    34 	if(!aValue)
       
    35 		{
       
    36 		TheTest(EFalse, aLine);
       
    37 		}
       
    38 	}
       
    39 
       
    40 #define TEST(arg) ::Check((arg), __LINE__)
       
    41 
       
    42 //
       
    43 // Tests
       
    44 
       
    45 /**
       
    46 @SYMTestCaseID 			SYSLIB-STDLIB-UT-1670
       
    47 @SYMTestCaseDesc	    Making sure that error codes are returned from sprintf when when out of memory. 
       
    48 @SYMTestPriority 	    Critical
       
    49 @SYMTestActions  	    Sets heap failures to occur at different stages and calls sprintf. The sprintf function should return with error codes
       
    50 						when errors occur.
       
    51 @SYMTestExpectedResults The test should not fail.
       
    52 @SYMDEF 				DEF083988
       
    53 */	
       
    54 void DEF083988()
       
    55 	{
       
    56     TheTest.Next(_L(" @SYMTestCaseID:SYSLIB-STDLIB-UT-1670 DEF083988 - Prop: sprintf panics with ESTLIB-INIT 0 when out of memory "));
       
    57 	
       
    58 	int ret;
       
    59 	char buf[30];
       
    60 	char* hw = "How are you?";	
       
    61 	
       
    62 	#ifdef _DEBUG
       
    63 	const int err = -1;
       
    64 	
       
    65 	__UHEAP_FAILNEXT(1);
       
    66     ret = sprintf(buf, "Hello");
       
    67 	TEST(ret == err);  // Error returned as memory needed to be allocated, but none was spare.	
       
    68 	__UHEAP_RESET;
       
    69 	
       
    70 	__UHEAP_FAILNEXT(2);
       
    71     ret = sprintf(buf, "Hello");
       
    72 	TEST(ret == 5);  // No Error, as memory allocation failure did not affected sprintf.
       
    73 	TEST(strcmp(buf, "Hello")==0);
       
    74 	__UHEAP_RESET;
       
    75 	// Releases all the STDLIB resources so memory for the globals will need to be allocated once more.	
       
    76 	CloseSTDLIB(); 
       
    77 	#endif
       
    78 
       
    79 	
       
    80 	#ifdef _DEBUG
       
    81 	__UHEAP_FAILNEXT(3);
       
    82     ret = sprintf(buf, "Hello");
       
    83 	TEST(ret == err);  // Error returned as memory needed to be allocated, but none was spare.
       
    84 	__UHEAP_RESET;	
       
    85 	CloseSTDLIB();
       
    86 	#endif
       
    87 		
       
    88 				
       
    89     ret = sprintf(buf, "Hello");
       
    90 	TEST(strcmp(buf, "Hello") == 0);
       
    91 	TEST(ret == 5);  // Returns the number of characters printed.
       
    92 
       
    93 	ret = sprintf(buf, hw);
       
    94 	TEST(strcmp(buf, "How are you?") == 0);
       
    95 	TEST(ret == 12); // Returns the number of characters printed, as the memory is already allocated.
       
    96 
       
    97 	#ifdef _DEBUG
       
    98 	__UHEAP_FAILNEXT(1);	
       
    99 	ret = sprintf(buf, hw);
       
   100 	TEST(strcmp(buf, "How are you?") == 0);
       
   101 	TEST(ret == 12); // Returns the number of characters printed, as the memory is already allocated.
       
   102 	__UHEAP_RESET;
       
   103 	#endif
       
   104 		
       
   105 	CloseSTDLIB();
       
   106 		
       
   107 	ret = sprintf(buf, "How are you?");
       
   108 	TEST(strcmp(buf, "How are you?") == 0);
       
   109 	TEST(ret == 12); // Returns the number of characters printed, as the memory is able to be allocated.
       
   110 	
       
   111 	CloseSTDLIB();
       
   112 		
       
   113 	}
       
   114 
       
   115 
       
   116 
       
   117 static void Main()
       
   118 	{
       
   119 	TheTest.Start(_L("Defect..."));
       
   120 	DEF083988(); //DEF083988 - Prop: sprintf panics with ESTLIB-INIT 0 when out of memory
       
   121 	}
       
   122 
       
   123 
       
   124 TInt E32Main()
       
   125 	{
       
   126 	__UHEAP_MARK;
       
   127 
       
   128 	CTrapCleanup* tc = CTrapCleanup::New();
       
   129     TEST(tc != NULL);
       
   130     
       
   131 	CloseSTDLIB();
       
   132 	TheTest.Title();
       
   133 	
       
   134     ::Main();
       
   135 	
       
   136 	TheTest.End();
       
   137 	TheTest.Close();
       
   138 
       
   139 	delete tc;
       
   140 	CloseSTDLIB();	
       
   141 
       
   142 	__UHEAP_MARKEND;
       
   143 
       
   144 	User::Heap().Check();
       
   145 	return KErrNone;
       
   146 	}