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 v2.19.0 lcov report (development 31092-e6893b0017) Lines: 98.6 % 345 340
Test Date: 2026-08-13 17:02:38 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 549
surface_gcd_path 1072
common_nbr_verify 1089
descend_volcano 2902
common_nbr_corner 37323
common_nbr_pred 43031
common_nbr_pred_poly 44120
node_degree 85470
surface_gcd_cycle 98202
ascend_volcano 135346
nhbr_polynomial 150762
next_surface_nbr 157221
surface_parallel_path 206645
j_level_in_volcano 219560
random_distinct_neighbours_of 219886
surface_path 231274
enum_roots 236556
pcp_get_L 236556
pcp_get_L0 236556
pcp_get_enum_cnt 236556
pcp_get_k 236556
pcp_get_n 236556
pcp_get_o 236556
common_nbr 243968
extend_path 296804
is_j_exceptional 384598
get_nbrs 29087776
Flx_remove_root 39915731

Generated by: LCOV version 2.0-1