/* $XConsortium: elemptr1.pi,v 5.2 94/04/17 20:46:59 rws Exp $ */

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## elemptr1.pi - basic test of setting & inquiring element pointer.
## Inquire element pointer before touching structure, after adding
## elements, after setting to less than 0, after setting to value
## higher than number of elements, after adding elements in middle
## of structure.

tbegintest("elemptr1","basic set & inquire of element pointer");

source macro.pi	
source strmacro.pi
source apimacro.pi

# open Phigs, create window, open workstation
i_open_phigs(NULL,PDEF_MEM_SIZE);
i_open_ws(1);

# open and post a structure
popen_struct(1);
ppost_struct(1,1,1.0);

# inquire initial element pointer - should be 0
im_confirm_elemptr(0, "Initial element pointer, %d, non-zero\n");

# insert two elements into structure - pointer should become 2
plabel(1);
plabel(2);
im_confirm_elemptr(2, "Element pointer, %d, incorrect after adding 2 elements\n");

# Set pointer to value less than 0 - resulting pointer should be 0
pset_elem_ptr(-3);
im_confirm_elemptr(0, "Elem pointer set to -3, should be 0, was %d\n");

# Set pointer to number greater than size of structure - should
# become pointer to last element
pset_elem_ptr(3);
im_confirm_elemptr(2, "Elem pointer set to 3, should be last element 2, was %d\n");

# Try setting pointer to 0
pset_elem_ptr(0);
im_confirm_elemptr(0, "Elem pointer should have been set to 0, was %d\n");

# Set pointer at last element
pset_elem_ptr(2);
im_confirm_elemptr(2, "Elem pointer should be last element (2), was %d\n");

# Set element pointer in middle, add an element
pset_elem_ptr(1);
im_confirm_elemptr(1, "Elem pointer %d, should be middle value 1\n");
pset_edge_colr_ind(7);
im_confirm_elemptr(2, "Elem pointer %d should have advanced to 2\n");

pclose_struct();
pclose_ws(1);
pclose_phigs();
tendtest();