create tests/resolution.bats (fixes #2146) (#2160)

Co-authored-by: dogi <dogi@users.noreply.github.com>

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@treehouses/cli",
-  "version": "1.25.39",
+  "version": "1.25.40",
   "remote": "4000",
   "description": "Thin command-line interface for Raspberry Pi low level configuration.",
   "main": "cli.sh",

tests/resolution.bats

@@ -0,0 +1,38 @@
+#!/usr/bin/env bats
+load test-helper
+
+@test "$clinom resolution" {
+  run "${clicmd}" resolution
+  assert_success && assert_output -p 'hdmi group should be either'
+}
+
+@test "$clinom resolution cea" {
+  run "${clicmd}" resolution cea
+  assert_output -p 'mode is not available' && assert_output -p 'Group CEA has'
+}
+
+@test "$clinom resolution cea 4" {
+  run "${clicmd}" resolution cea 4
+  assert_output -p 'Screen resolution set to mode4:' && assert_output -p 'reboot needed to see the changes'
+}
+
+@test "$clinom resolution cea 1337 (non-existent mode)" {
+  run "${clicmd}" resolution cea 1337
+  assert_output -p 'mode is not available' && assert_output -p 'Group CEA has'
+}
+
+@test "$clinom resolution dmt" {
+  run "${clicmd}" resolution dmt
+  assert_output -p 'mode is not available' && assert_output -p 'Group DMT has'
+}
+
+@test "$clinom resolution dmt 4" {
+  run "${clicmd}" resolution dmt 4
+  assert_output -p 'Screen resolution set to mode4:' && assert_output -p 'reboot needed to see the changes'
+}
+
+@test "$clinom resolution dmt 1337 (non-existent mode)" {
+  run "${clicmd}" resolution dmt 1337
+  assert_output -p 'mode is not available' && assert_output -p 'Group DMT has'
+}
+