strengthened integrity tests

programs/fileio.c

@@ -744,7 +744,7 @@ static int FIO_decompressDstFile(dRess_t ress,
     result = FIO_decompressSrcFile(ress, srcFileName);
 
     if (fclose(ress.dstFile)) EXM_THROW(38, "Write error : cannot properly close %s", dstFileName);
-    if (result != 0) if (remove(dstFileName)) EXM_THROW(39, "remove %s error : %s", dstFileName, strerror(errno));
+    if (result != 0) if (remove(dstFileName)) result=1;   /* don't do anything if remove fails */
     return result;
 }
 

programs/playTests.sh

@@ -204,8 +204,11 @@ $ZSTD -t tmp1.zst
 $ZSTD --test tmp1.zst
 $ECHO "test multiple files (*.zst) "
 $ZSTD -t *.zst
-$ECHO "test good and bad files (*) "
+$ECHO "test bad files (*) "
 $ZSTD -t * && die "bad files not detected !"
+$ZSTD -t tmp1 && die "bad file not detected !"
+cp tmp1 tmp2.zst
+$ZSTD -t tmp2.zst && die "bad file not detected !"
 $ECHO "test --rm and --test combined "
 $ZSTD -t --rm tmp1.zst
 ls -ls tmp1.zst  # check file is still present