diff options
Diffstat (limited to 'src/pal/tests/palsuite/c_runtime/fopen/test3/test3.cpp')
-rw-r--r-- | src/pal/tests/palsuite/c_runtime/fopen/test3/test3.cpp | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/src/pal/tests/palsuite/c_runtime/fopen/test3/test3.cpp b/src/pal/tests/palsuite/c_runtime/fopen/test3/test3.cpp new file mode 100644 index 0000000000..f3af42dc8a --- /dev/null +++ b/src/pal/tests/palsuite/c_runtime/fopen/test3/test3.cpp @@ -0,0 +1,66 @@ +// Licensed to the .NET Foundation under one or more agreements. +// The .NET Foundation licenses this file to you under the MIT license. +// See the LICENSE file in the project root for more information. + +/*===================================================================== +** +** Source: test3.c +** +** Purpose: Tests the PAL implementation of the fopen function. +** Test to ensure that you can write to a 'w+' mode file. +** And that you can read from a 'w+' mode file. +** +** Depends: +** fprintf +** fseek +** fgets +** + +** +**===================================================================*/ + +#include <palsuite.h> + +int __cdecl main(int argc, char **argv) +{ + + FILE *fp; + char buffer[128]; + + if (PAL_Initialize(argc, argv)) + { + return FAIL; + } + + + /* Open a file with 'w+' mode */ + if( (fp = fopen( "testfile", "w+" )) == NULL ) + { + Fail( "ERROR: The file failed to open with 'w+' mode.\n" ); + } + + /* Write some text to the file */ + if(fprintf(fp,"%s","some text") <= 0) + { + Fail("ERROR: Attempted to WRITE to a file opened with 'w+' mode " + "but fprintf failed. Either fopen or fprintf have problems."); + } + + if(fseek(fp, 0, SEEK_SET)) + { + Fail("ERROR: fseek failed, and this test depends on it."); + } + + /* Attempt to read from the 'w+' only file, should pass */ + if(fgets(buffer,10,fp) == NULL) + { + Fail("ERROR: Tried to READ from a file with 'w+' mode set. " + "This should succeed, but fgets returned NULL. Either fgets " + "or fopen is broken."); + } + + PAL_Terminate(); + return PASS; +} + + |