websnacks/test/test-suites/rendering.tsx
M. George Hansen 5118a8174b
chore: replace eslint & prettier w/ biomejs (#21)
* chore: replace eslint & prettier w/ biomejs

* fix syntax error in ci.yml workflow

* ensure that build CI jobs only run if check job succeeds to save resources
2024-07-15 08:36:52 -07:00

152 lines
4 KiB
TypeScript

/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at https://mozilla.org/MPL/2.0/.
*/
import { type Component, Fragment, createElement } from "../../dist";
import { renderPage } from "../../dist/render";
import { testSuite } from "../lib";
testSuite("renderPage", ({ test, expect }) => {
test("throws an Error when root elem is not html tag", () => {
expect(() => renderPage(<div />)).toThrowErrorMatching(
"attempted to render page with non-HTML root element div",
);
});
test("outputs a HTML5 DOCTYPE declaration", () => {
const html = renderPage(<html />);
expect(html).toStartWith("<!DOCTYPE html>");
});
test("escapes HTML in tag names", () => {
const html = renderPage(<html>{createElement("div></div", null)}</html>);
expect(html).toEqual(
"<!DOCTYPE html><html><div&gt;&lt;/div></div&gt;&lt;/div></html>",
);
});
test("renders html attributes", () => {
const html = renderPage(
<html>
<div className="test" id="1" />
</html>,
);
expect(html).toEqual(
'<!DOCTYPE html><html><div class="test" id="1"></div></html>',
);
});
test("renders common html tags", () => {
const html = renderPage(
<html>
<head>
<title />
</head>
<body>
<div />
</body>
</html>,
);
expect(html).toEqual(
"<!DOCTYPE html><html><head><title></title></head><body><div></div></body></html>",
);
});
test("renders text nodes", () => {
const html = renderPage(<html>There are three lights!</html>);
expect(html).toEqual("<!DOCTYPE html><html>There are three lights!</html>");
});
test("renders spliced number nodes", () => {
const nLights = 3;
const html = renderPage(<html>There are {nLights} lights!</html>);
expect(html).toEqual("<!DOCTYPE html><html>There are 3 lights!</html>");
});
test("renders spliced arrays", () => {
const Light: Component<{ lightN: number }> = ({ lightN }) => (
<div>{lightN}</div>
);
const lights = [1, 2, 3];
const html = renderPage(
<html>
There are{" "}
{lights.map((lightN) => (
<Light lightN={lightN} />
))}{" "}
lights!
</html>,
);
expect(html).toEqual(
"<!DOCTYPE html><html>There are <div>1</div><div>2</div><div>3</div> lights!</html>",
);
});
test("renders components w/ custom properties", () => {
interface LightProps {
nLights: number;
}
const Light: Component<LightProps> = ({ nLights }) => (
<div>{nLights} lights</div>
);
const html = renderPage(
<html>
There are <Light nLights={3} />!
</html>,
);
expect(html).toEqual(
"<!DOCTYPE html><html>There are <div>3 lights</div>!</html>",
);
});
test("renders fragment children only", () => {
const html = renderPage(
<html>
<Fragment>
<div>test of</div>
<div>fragments</div>
</Fragment>
</html>,
);
expect(html).toEqual(
"<!DOCTYPE html><html><div>test of</div><div>fragments</div></html>",
);
});
test("renders unescaped HTML via dangerouslySetInnerHTML", () => {
const html = renderPage(
<html>
<div
// biome-ignore lint/security/noDangerouslySetInnerHtml: explicit test
dangerouslySetInnerHTML={{
__html: "<div>red alert!</div>",
}}
/>
</html>,
);
expect(html).toEqual(
"<!DOCTYPE html><html><div><div>red alert!</div></div></html>",
);
});
test("throws error when both dangerouslySetInnerHTML and children prop present", () => {
expect(() =>
renderPage(
<html>
<div
// biome-ignore lint/security/noDangerouslySetInnerHtml: explicit test
// biome-ignore lint/security/noDangerouslySetInnerHtmlWithChildren: explicit test
dangerouslySetInnerHTML={{
__html: "<div>set phasers to kill</div>",
}}
>
<div>set phasers to stun</div>
</div>
</html>,
),
).toThrowErrorMatching(
'An element with children may not have a "dangerouslySetInnerHTML" prop since children would be overriden',
);
});
});