sendou.ink/app/utils/string.test.ts

import { describe, expect, test } from "vitest";
import { pathnameFromPotentialURL, truncateBySentence } from "./strings";

describe("pathnameFromPotentialURL()", () => {
	test("Resolves path name from valid URL", () => {
		expect(pathnameFromPotentialURL("https://bsky.app/sendouc")).toBe(
			"sendouc",
		);
	});

	test("Returns string as is if not URL", () => {
		expect(pathnameFromPotentialURL("sendouc")).toBe("sendouc");
	});
});

describe("truncateBySentence()", () => {
	test("Truncates text by sentence within max length", () => {
		const text = "This is the first sentence. This is the second sentence.";
		expect(truncateBySentence(text, 30)).toBe("This is the first sentence.");
	});

	test("Returns original text if no sentences fit within max length", () => {
		const text = "This is a very long sentence that exceeds the max length.";
		expect(truncateBySentence(text, 10)).toBe("This is a");
	});

	test("Returns original text if it is shorter than max length", () => {
		const text = "Short text.";
		expect(truncateBySentence(text, 50)).toBe("Short text.");
	});

	test("Handles no senteces", () => {
		const text = "One two three four five six seven eight nine ten";
		expect(truncateBySentence(text, 10)).toBe("One two th");
	});

	test("Truncates text by sentence with newline characters", () => {
		const text = "This is the first sentence\nThis is the second sentence";
		expect(truncateBySentence(text, 30)).toBe("This is the first sentence");
	});

	test("Handles text with multiple newline characters", () => {
		const text = "First line\nSecond line\nThird line";
		expect(truncateBySentence(text, 20)).toBe("First line");
	});
});