penpot/frontend/text-editor/editor/content/Text.test.js

import { describe, test, expect } from 'vitest'
import { insertInto, removeBackward, removeForward, replaceWith } from './Text';

describe("Text", () => {
  test("* should throw when passed wrong parameters", () => {
    expect(() => insertInto(Infinity, Infinity, Infinity)).toThrowError('Invalid string');
    expect(() => insertInto('Hello', Infinity, Infinity)).toThrowError('Invalid offset');
    expect(() => insertInto('Hello', 0, Infinity)).toThrowError('Invalid string');
  });

  test("`insertInto` should insert a string into an offset", () => {
    expect(insertInto("Hell, World!", 4, "o")).toBe("Hello, World!");
  });

  test("`replaceWith` should replace a string into a string", () => {
    expect(replaceWith("Hello, Something!", 7, 16, "World")).toBe("Hello, World!");
  });

  test("`removeBackward` should remove string backward from start (offset 0)", () => {
    expect(removeBackward("Hello, World!", 0)).toBe("Hello, World!");
  });

  test("`removeForward` should remove string forward from start (offset 0)", () => {
    expect(removeForward("Hello, World!", 0)).toBe("ello, World!");
  });

  test("`removeBackward` should remove string backward from end", () => {
    expect(removeBackward("Hello, World!", "Hello, World!".length)).toBe(
      "Hello, World"
    );
  });

  test("`removeForward` should remove string forward from end", () => {
    expect(removeForward("Hello, World!", "Hello, World!".length)).toBe(
      "Hello, World!"
    );
  });

  test("`removeBackward` should remove string backward from offset 6", () => {
    expect(removeBackward("Hello, World!", 6)).toBe("Hello World!");
  });

  test("`removeForward` should remove string forward from offset 6", () => {
    expect(removeForward("Hello, World!", 6)).toBe("Hello,World!");
  });
});