[ONB-730] test: increase coverage by testing dynamic TLS config generation for TCP routes

[JoseFMP]

This PR add to the unit tests coverage in the function _update_dynamic_config_route, for the cases where 'tcp' routes are passed in the Charm configuration

Issue

The unit tests do not cover the case of dynamic TLS configuration generation for TCP routes.

Solution

In the mock configuration passed to the unit tests, add TCP routes as well as their expected TLS auto-generated configuration.

[Abuelodelanada]

Hola @JoseFMP !

This is ok. Anyway if you run the unit tests suite in this repo:

tox -e unit

You will see the following report:

unit: commands[1]> coverage report
Name             Stmts   Miss Branch BrPart  Cover   Missing
------------------------------------------------------------
src/charm.py       586    134    241     44    73%   299->exit, 307, 311-313, 325, 329-333, 339, 345, 351-353, 364, 371, 374-379, 383-390, 394-400, 408, 414, 423, 432-442, 455, 457-458, 461->452, 473->470, 489-498, 527, 543->553, 564-570, 674-675, 690, 713-721, 743-744, 767-769, 772-773, 785, 793-797, 802, 807->834, 819, 822, 835-851, 869->874, 878-884, 892-916, 924-925, 929-931, 946->952, 965, 970-976, 983->1002, 999->1002, 1014, 1029, 1045->1056, 1082-1092, 1097, 1127, 1141-1143, 1149, 1164->exit, 1167-1168, 1176-1191, 1201, 1205
src/traefik.py     243     48     72     15    77%   50, 125-147, 158, 166-169, 176, 179, 191, 199, 211-214, 237, 311-326, 396-397, 434, 474-476, 480, 488-490, 503, 515-519, 540-541, 550, 558, 600-602, 663-664, 669-679
src/utils.py        10      0      2      0   100%
------------------------------------------------------------
TOTAL              839    182    315     59    74%

Do you think you can add one more unit test that increases the coverage?

[PietroPasotti]

Hi @JoseFMP I think it's good to add more input combinations to existing parametrized tests. Thanks!
Could you show us how that affected the coverage specifically? A before/after comparison would be good :)