Unit testing using Bach [filebeat.sh]

[verdx]

closes #1179

Description

Used https://bach.sh/ to create unit tests for each function. In the directory tests/unattended there is a file called test-{script-name}.sh for each script in unattended installer. Inside that file are defined the unit tests for each function of {script-name}.sh. To call them we use the auxiliary script unit-test.sh, which creates a docker environment in which to run the tests.

Example of output:

[verdx@verdx unit]$ bash unit-tests.sh -f filebeat
19/01/2022 12:20:11 INFO: Docker image found.
19/01/2022 12:20:11 INFO: Unit tests for filebeat.sh.
1..14
ok 1 - installFilebeat yum
ok 2 - ASSERT FAIL installFilebeat yum error
ok 3 - ASSERT FAIL installFilebeat zypper error
ok 4 - configureFilebeat one elastic node
ok 5 - installFilebeat zypper
ok 6 - copyCertificatesFilebeat distributed
ok 7 - ASSERT FAIL copyCertificatesFilebeat no tarfile
ok 8 - configureFilebeat more than one elastic node
ok 9 - configureFilebeatAIO no previous variables
ok 10 - copyCertificatesFilebeat AIO
ok 11 - ASSERT FAIL installFilebeat apt error
ok 12 - installFilebeat apt
ok 13 - configureFilebeat no previous variables
ok 14 - configureFilebeatAIO
# -----
# All tests: 14, failed: 0, skipped: 0
19/01/2022 12:20:15 INFO: All unit tests for the functions in filebeat.sh finished.
19/01/2022 12:20:15 INFO: Cleaning temporary files.
[verdx@verdx unit]$