stateful-page.test.ts
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stateful-page.test.ts
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	import { Context } from "koa";
	import { Templatable, tempstream } from "tempstream";
	import {
	ExtractStatefulPageActionArgs,
	StatefulPage,
	StatefulPageActionArgument,
	} from "./stateful-page.js";

	describe("stateful page", () => {
	it("has types that allow for extracting action argument types", () => {
	type TestState = {};
	const action = async ({}: StatefulPageActionArgument<TestState, [number]>) => {};
	type Args = ExtractStatefulPageActionArgs<typeof action>;
	const a = [2] as Args; // should not throw a typescript error;
	});

	it("handles a basic case with action buttons", () => {
	type TestState = {};
	const actions = <const>{
	some_action: async ({}: StatefulPageActionArgument<TestState, [number]>) => {},
	};
	new (class extends StatefulPage<TestState, typeof actions> {
	actions = actions;

	getInitialState(_ctx: Context) {
	return {};
	}

	wrapInLayout(_ctx: Context, content: Templatable, _state: TestState): Templatable {
	return content;
	}

	render(_ctx: Context, state: TestState) {
	return tempstream`<div>${this.makeActionButton(state, "some_action", 2)}</div>`;
	}
	})();
	});
	});