chore: add GUT test framework

addons/gut/test/output_tests/test_awaiter_output.gd

@@ -0,0 +1,50 @@
+extends GutInternalTester
+
+func before_each():
+	wait_log_delay = 0.0
+
+
+func test_wait_seconds():
+	await wait_seconds(.1, 'this is the message')
+	pass_test('passing')
+
+
+func test_wait_1s():
+	wait_log_delay = .9
+	await wait_seconds(1, 'this is the message')
+	pass_test('passing')
+
+
+func test_wait_idle_frames():
+	await wait_idle_frames(10, 'this is the message')
+	pass_test('passing')
+
+
+func test_wait_physics_frames():
+	await wait_physics_frames(10, 'this is the message')
+	pass_test('passing')
+
+
+func test_wait_until():
+	var f = func(): return true
+	await wait_until(f, 5, 'this is the message')
+	pass_test('passing')
+
+
+func test_wait_while():
+	var f = func(): return false
+	await wait_while(f, 5, 'this is the message')
+	pass_test('passing')
+
+
+signal some_signal
+func test_wait_for_signal():
+	await wait_for_signal(some_signal, .5, 'this is the message')
+	pass_test('passing')
+
+func test_get_no_message_when_wait_is_less():
+	wait_log_delay = 10
+	await wait_idle_frames(1)
+	await wait_physics_frames(1)
+	await wait_seconds(.2)
+	pass_test('passing')