tests: Add basic tests for menu plugin

This checks basic features of kas menu, some option selection, yaml
including, rebuilding and target selection.

The UI is operated by mocking smack's GridFormHelp.runOnce and some
result evaluation functions. Injecting keys from the keyboard was not
easily possibly (if at all), thus this approach. The menu rendering is
not shown due to pytest.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>

tests/test_menu/Kconfig

@@ -0,0 +1,32 @@
+config KAS_INCLUDE_MAIN
+	string
+	default "test.yaml"
+
+config KAS_BUILD_SYSTEM
+	string
+	default "openembedded"
+
+config BOOL_OPT1
+	bool "ppt1"
+
+config KAS_INCLUDE_OPT1
+	string
+	default "opt1.yaml"
+	depends on BOOL_OPT1
+
+choice
+	prompt "choice"
+	default CHOICE1
+
+config CHOICE1
+	bool "choice1"
+
+config CHOICE2
+	bool "choice2"
+
+endchoice
+
+config KAS_TARGET_CHOICE
+	string
+	default "target1" if CHOICE1
+	default "target2" if CHOICE2

tests/test_menu/bitbake

@@ -0,0 +1,3 @@
+#!/bin/sh
+
+echo "$@" > bitbake.options

tests/test_menu/oe-init-build-env

@@ -0,0 +1,3 @@
+#!/bin/sh
+
+export PATH=$(pwd):$PATH

tests/test_menu/opt1.yaml

@@ -0,0 +1,7 @@
+header:
+  version: 11
+
+local_conf_header:
+  opt1: |
+    OPT1 = "1"
+

tests/test_menu/test.yaml

@@ -0,0 +1,5 @@
+header:
+  version: 11
+
+repos:
+  this: