Make 'pio_write_run' responsible for setting the format argument '-f'.

tests/pio_cksum_cdf.in

@@ -5,17 +5,17 @@ LOG=pio_cksum_cdf.log
 
 suffix=nc4
 mpi_task_num=7
-pio_write_args="-f $suffix -w 3 -qtaxis-type=relative"
+pio_write_args="-w 3 -qtaxis-type=relative"
 (. ./pio_write_run) || test $? -eq 77 || exit 1
 
 mpi_task_num=8
 suffix=nc2
-pio_write_args="-f $suffix -w 3 -qtaxis-type=relative"
+pio_write_args="-w 3 -qtaxis-type=relative"
 (. ./pio_write_run) || test $? -eq 77 || exit 1
 
 mpi_task_num=5
 suffix=nc
-pio_write_args="-f $suffix -w 2 -qtaxis-type=relative"
+pio_write_args="-w 2 -qtaxis-type=relative"
 # TODO: This script should be splitted into three ones. In the meantime, we
 # assume that if this test is skipped, the two above are skipped as well and we
 # can 'exit 77'.

tests/pio_cksum_grb2.in

 #!@SHELL@
 @USE_MPI_FALSE@exit 77
 
-pio_write_args="-f grb2 -w 3"
+pio_write_args="-w 3"
 mpi_task_num=8
 LOG=pio_cksum_grb2.log
 suffix=grb2

tests/pio_write_run.in

@@ -34,7 +34,7 @@ test_variation()
   @top_builddir@/libtool --mode=execute \
     @MPI_LAUNCH@ \
     -n ${mpi_task_num} ${tool_wrap_mpi} \
-    ./pio_write ${pio_write_args} -s 7 ${variation} || exit 1
+    ./pio_write -f ${suffix} ${pio_write_args} -s 7 ${variation} || exit 1
   echo "checking example_0.$suffix" >&2
   @top_builddir@/libtool --mode=execute \
     ${tool_wrap} ./cksum_read example_0.${suffix} example_0.cksum || exit 1