@yoroi/common/lib/module/utils/strings.test.js

The Common package of Yoroi SDK

import { asConcatenedString, truncateString } from './strings';
describe('asConcatenedString', () => {
  it('should return undefined for null input', () => {
    expect(asConcatenedString(null)).toBeUndefined();
  });
  it('should return anything else', () => {
    expect(asConcatenedString({})).toBeUndefined();
    expect(asConcatenedString(['1', 1])).toBeUndefined();
    expect(asConcatenedString(1)).toBeUndefined();
  });
  it('should return undefined for undefined input', () => {
    expect(asConcatenedString(undefined)).toBeUndefined();
  });
  it('should return the original string for string input', () => {
    expect(asConcatenedString('hello')).toBe('hello');
  });
  it('should join array of strings into a single string', () => {
    expect(asConcatenedString(['h', 'e', 'l', 'l', 'o'])).toBe('hello');
  });
});
describe('truncateString', () => {
  it('should return the original string if its length is less than or equal to maxLength', () => {
    const value = 'hello';
    const maxLength = 10;
    const result = truncateString({
      value,
      maxLength
    });
    expect(result).toBe(value);
  });
  it('should truncate the string and add separator if its length is greater than maxLength', () => {
    const value = 'This is a long string';
    const maxLength = 10;
    const separator = '-';
    const result = truncateString({
      value,
      maxLength,
      separator
    });
    expect(result).toBe('This-ring');
  });
  it('should truncate the string and add separator at the correct position', () => {
    const value = 'This is a long string';
    const maxLength = 15;
    const separator = '...';
    const result = truncateString({
      value,
      maxLength,
      separator
    });
    expect(result).toBe('This i...string');
  });
});
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