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 30568-0d72d66ef5) Lines: 340 345 98.6 %
Date: 2025-12-01 09:22:22 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 553
common_nbr_verify 1015
surface_gcd_path 1072
descend_volcano 2887
common_nbr_corner 37511
common_nbr_pred 43025
common_nbr_pred_poly 44040
node_degree 86108
surface_gcd_cycle 95835
ascend_volcano 138316
nhbr_polynomial 152189
next_surface_nbr 157955
surface_parallel_path 204200
j_level_in_volcano 223751
random_distinct_neighbours_of 224079
surface_path 228777
pcp_get_L 235635
pcp_get_o 235635
enum_roots 235636
pcp_get_L0 235636
pcp_get_enum_cnt 235636
pcp_get_k 235636
pcp_get_n 235636
common_nbr 241695
extend_path 300492
is_j_exceptional 390111
get_nbrs 25443558
Flx_remove_root 33950246

Generated by: LCOV version 1.16