tests: refactor to de-duplicate code

Have a shared test_env.sh to de-duplicate code.

Add a common test_usage, where we test that:
  - option -h prints to stdout and exit with success
  - invalid option prints usage to stderr and exit with error

Use a common init_tests and a common atf_init_test_cases

Move documenation links to README.md

1 files changed, 4 insertions, 18 deletions

diff --git a/tests/setup_devd_test b/tests/setup_devd_test
index d911314..60e84b3 100755
--- a/tests/setup_devd_test
+++ b/tests/setup_devd_test
@@ -1,24 +1,10 @@
 #!/usr/bin/env atf-sh
 
-init_env() {
-	PATH=$(atf_get_srcdir)/..:$PATH
-	export ROOT=$PWD LIBDIR=$(atf_get_srcdir)/.. MOCK=echo
-}
-
-# docs:
-# - https://github.com/jmmv/kyua/wiki/Quickstart-atf-sh-test
-# - https://manned.org/atf-sh-api
-
-atf_init_test_cases() {
-	atf_add_test_case setup_devd_usage
-}
+. $(atf_get_srcdir)/test_env.sh
+init_tests \
+	setup_devd_usage
 
-atf_test_case setup_devd_usage
 setup_devd_usage_body() {
-	init_env
-	atf_check -s exit:0 \
-		-o match:'^usage: setup-devd' \
-		-e empty \
-		setup-devd -h
+	test_usage setup-devd
 }