Code coverage tests

This page documents the degree to which the PARI/GP source code is tested by our public test suite, distributed with the source distribution in directory src/test/. This is measured by the gcov utility; we then process gcov output using the lcov frond-end.

We test a few variants depending on Configure flags on the pari.math.u-bordeaux.fr machine (x86_64 architecture), and agregate them in the final report:

The target is to exceed 90% coverage for all mathematical modules (given that branches depending on DEBUGLEVEL or DEBUGMEM are not covered). This script is run to produce the results below.

LCOV - code coverage report
Current view: top level - basemath - volcano.c (source / functions) Coverage Total Hit
Test: PARI/GP v2.18.1 lcov report (development 31042-0fbe168e69) Lines: 98.6 % 345 340
Test Date: 2026-07-23 17:04:59 Functions: 100.0 % 28 28
Legend: Lines:     hit not hit

Function Name Sort by function name Hit count Sort by function hit count
Flm_Fl_polmodular_evalxy 558
surface_gcd_path 1072
common_nbr_verify 1095
descend_volcano 2901
common_nbr_corner 37349
common_nbr_pred 43031
common_nbr_pred_poly 44126
node_degree 85446
surface_gcd_cycle 98247
ascend_volcano 135286
nhbr_polynomial 150850
next_surface_nbr 157278
surface_parallel_path 206703
j_level_in_volcano 219586
random_distinct_neighbours_of 219907
surface_path 231294
enum_roots 236576
pcp_get_L 236576
pcp_get_L0 236576
pcp_get_enum_cnt 236576
pcp_get_k 236576
pcp_get_n 236576
pcp_get_o 236576
common_nbr 244052
extend_path 296939
is_j_exceptional 384573
get_nbrs 29088630
Flx_remove_root 39917082

Generated by: LCOV version 2.0-1