test: Minor adjustments to improve consistency between test code structure

Signed-off-by: Magnus Malm <magnusmalm@gmail.com>

test/test_add_remove_dynamic_service/test.sh

@@ -3,21 +3,24 @@
 set -eu
 
 TEST_DIR=$(dirname "$0")/..
+TESTENV_ROOT="$TEST_DIR"/test_root
+
 # shellcheck source=/dev/null
 . "$TEST_DIR/lib.sh"
 
 test_teardown() {
     say "Test done $(date)"
-    say "Running test teardown..."
+    say "Running test teardown."
 
-    # Teardown
-    rm -f test_root/bin/service.sh
+    remove_thing "$TESTENV_ROOT/$FINIT_CONF"
+    remove_thing "$TESTENV_ROOT"/test_assets/service.sh
 }
 
-# Test
 say "Test start $(date)"
-say 'Add a dynamic service in /etc/finit.conf'
+
 cp "$TEST_DIR"/common/service.sh "$TEST_DIR"/test_root/test_assets/
+
+say "Add a dynamic service in $FINIT_CONF"
 texec sh -c "echo 'service [2345] kill:20 log /test_assets/service.sh' > $FINIT_CONF"
 
 say 'Reload Finit'