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 31057-89c4d54ba6) Lines: 98.6 % 345 340
Test Date: 2026-07-25 17:02:42 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 552
surface_gcd_path 1072
common_nbr_verify 1089
descend_volcano 2893
common_nbr_corner 37370
common_nbr_pred 43031
common_nbr_pred_poly 44120
node_degree 85433
surface_gcd_cycle 98301
ascend_volcano 135354
nhbr_polynomial 150815
next_surface_nbr 157290
surface_parallel_path 206749
j_level_in_volcano 219576
random_distinct_neighbours_of 219899
surface_path 231285
enum_roots 236567
pcp_get_L 236567
pcp_get_L0 236567
pcp_get_enum_cnt 236567
pcp_get_k 236567
pcp_get_n 236567
pcp_get_o 236567
common_nbr 244119
extend_path 296759
is_j_exceptional 384543
get_nbrs 29088302
Flx_remove_root 39917403

Generated by: LCOV version 2.0-1