X-Git-Url: https://pd.if.org/git/?a=blobdiff_plain;f=platform%2Fexample%2Ffunctions%2Fstdlib%2Fsystem.c;h=eb8db3dbd9022f6b80f39881289ed95e3c820d1f;hb=d193d54478243fbd9e68649e0eb534c72d6aea0d;hp=1c4589c91ef9bed160ce8e3b0e569bce50b0ec30;hpb=b08f4b52b1cd1f7a9553c0f357a7c90859fa3e73;p=pdclib

diff --git a/platform/example/functions/stdlib/system.c b/platform/example/functions/stdlib/system.c
index 1c4589c..eb8db3d 100644
--- a/platform/example/functions/stdlib/system.c
+++ b/platform/example/functions/stdlib/system.c
@@ -11,8 +11,9 @@
 /* This is an example implementation of system() fit for use with POSIX kernels.
 */
 
-#include <unistd.h>
-#include <sys/wait.h>
+extern int fork( void );
+extern int execve( const char * filename, char * const argv[], char * const envp[] );
+extern int wait( int * status );
 
 int system( const char * string )
 {
@@ -39,7 +40,17 @@ int system( const char * string )
 
 int main( void )
 {
+    FILE * fh;
+    char buffer[25];
+    buffer[24] = 'x';
+    TESTCASE( ( fh = freopen( testfile, "wb+", stdout ) ) != NULL );
     TESTCASE( system( SHELLCOMMAND ) );
+    rewind( fh );
+    TESTCASE( fread( buffer, 1, 24, fh ) == 24 );
+    TESTCASE( memcmp( buffer, "SUCCESS testing system()", 24 ) == 0 );
+    TESTCASE( buffer[24] == 'x' );
+    TESTCASE( fclose( fh ) == 0 );
+    TESTCASE( remove( testfile ) == 0 );
     return TEST_RESULTS;
 }