Add tests for rgbTo256Color (8172d254) · Commits · sc07 / Fedify Patched

cli/node.test.ts

+50 −2

Original line number	Diff line number	Diff line
		import { assertEquals } from "@std/assert";
		import fetchMock from "fetch-mock";
		import { getFaviconUrl } from "./node.ts";
		import { getFaviconUrl, rgbTo256Color } from "./node.ts";

		const HTML_WITH_SMALL_ICON = `
		<!DOCTYPE html>
		@@ -23,7 +23,6 @@ Deno.test("getFaviconUrl - small favicon.ico and apple-touch-icon.png", async ()
		});

		const result = await getFaviconUrl("https://example.com/");
		console.log(result);
		assertEquals(result.href, "https://example.com/apple-touch-icon.png");

		fetchMock.hardReset();
		@@ -105,3 +104,52 @@ Deno.test("getFaviconUrl - falls back to /favicon.ico", async () => {

		fetchMock.hardReset();
		});

		Deno.test("rgbTo256Color - check RGB cube", () => {
		const CUBE_VALUES = [0, 95, 135, 175, 215, 255];
		const COLORS: Array<{ r: number; g: number; b: number }> = [];

		for (let r = 0; r < 6; r++) {
		for (let g = 0; g < 6; g++) {
		for (let b = 0; b < 6; b++) {
		COLORS.push({
		r: CUBE_VALUES[r],
		g: CUBE_VALUES[g],
		b: CUBE_VALUES[b],
		});
		}
		}
		}

		// Expected color indices for the above colors (16-231)
		// RGB cube: 6x6x6 = 216 colors, indices 16-231
		const EXPECTED_CUBE_IDX = Array.from(
		{ length: COLORS.length },
		(_, i) => 16 + i,
		);

		const results = COLORS.map((COLOR) =>
		rgbTo256Color(COLOR.r, COLOR.g, COLOR.b)
		);
		assertEquals(results, EXPECTED_CUBE_IDX);
		});

		Deno.test("rgbTo256Color - check grayscale", () => {
		const GRAYSCALE = Array.from({ length: 24 }).map(
		(_, idx) => ({
		r: 8 + idx * 10,
		g: 8 + idx * 10,
		b: 8 + idx * 10,
		}),
		);

		const EXPECTED_GRAY_IDX = Array.from(
		{ length: GRAYSCALE.length },
		(_, i) => 232 + i,
		);

		const results = GRAYSCALE.map((GRAY) =>
		rgbTo256Color(GRAY.r, GRAY.g, GRAY.b)
		);
		assertEquals(results, EXPECTED_GRAY_IDX);
		});