refactor: split script into modules and drop queue save/load

tests/run.lua

@@ -0,0 +1,44 @@
+package.path = table.concat({
+	"./?.lua",
+	"./?/init.lua",
+	"./?/?.lua",
+	"./mpv-youtube-queue/?.lua",
+	"./mpv-youtube-queue/?/?.lua",
+	package.path,
+}, ";")
+
+local total = 0
+local failed = 0
+
+local function run_test(file)
+	local chunk, err = loadfile(file)
+	if not chunk then
+		error(err)
+	end
+	local ok, test_err = pcall(chunk)
+	total = total + 1
+	if ok then
+		io.write("PASS ", file, "\n")
+		return
+	end
+	failed = failed + 1
+	io.write("FAIL ", file, "\n", test_err, "\n")
+end
+
+local tests = {
+	"tests/app_spec.lua",
+	"tests/metadata_resolution_test.lua",
+	"tests/state_spec.lua",
+	"tests/history_client_spec.lua",
+	"tests/input_spec.lua",
+}
+
+for _, file in ipairs(tests) do
+	run_test(file)
+end
+
+if failed > 0 then
+	error(string.format("%d/%d tests failed", failed, total))
+end
+
+io.write(string.format("PASS %d tests\n", total))