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) Hit Total Coverage
Test: PARI/GP v2.18.1 lcov report (development 30617-dd5c93fb0e) Lines: 340 345 98.6 %
Date: 2026-01-20 09:21:06 Functions: 28 28 100.0 %
Legend: Lines: hit not hit

Function Name Sort by function name Hit count Sort by hit count
Flm_Fl_polmodular_evalxy 563
surface_gcd_path 1072
common_nbr_verify 1100
descend_volcano 2888
common_nbr_corner 37347
common_nbr_pred 43025
common_nbr_pred_poly 44126
node_degree 84285
surface_gcd_cycle 96914
ascend_volcano 133476
nhbr_polynomial 148448
next_surface_nbr 155944
surface_parallel_path 205337
j_level_in_volcano 216462
random_distinct_neighbours_of 216780
surface_path 226613
pcp_get_enum_cnt 231890
pcp_get_k 231890
pcp_get_o 231891
enum_roots 231893
pcp_get_L 231893
pcp_get_L0 231894
pcp_get_n 231894
common_nbr 242670
extend_path 292591
is_j_exceptional 379143
get_nbrs 26450175
Flx_remove_root 35717304

Generated by: LCOV version 1.16