import { LineWrapper } from '@src/LineWrapper';
import { StringBuffer } from '@src/StringBuffer';

describe('LineWrapper', () => {
  it('wrap', () => {
    const out = new StringBuffer();
    const lineWrapper = new LineWrapper(out, '  ', 10);
    lineWrapper.append('abcde');
    lineWrapper.wrappingSpace(2);
    lineWrapper.append('fghij');
    lineWrapper.close();
    expect(out.toString()).toEqual('abcde\n    fghij');
  });

  it('noWrap', () => {
    const out = new StringBuffer();
    const lineWrapper = new LineWrapper(out, '  ', 10);
    lineWrapper.append('abcde');
    lineWrapper.wrappingSpace(2);
    lineWrapper.append('fghi');
    lineWrapper.close();
    expect(out.toString()).toEqual('abcde fghi');
  });

  it('zeroWidthNoWrap', () => {
    const out = new StringBuffer();
    const lineWrapper = new LineWrapper(out, '  ', 10);
    lineWrapper.append('abcde');
    lineWrapper.zeroWidthSpace(2);
    lineWrapper.append('fghij');
    lineWrapper.close();
    expect(out.toString()).toEqual('abcdefghij');
  });

  it('nospaceWrapMax', () => {
    const out = new StringBuffer();
    const lineWrapper = new LineWrapper(out, '  ', 10);
    lineWrapper.append('abcde');
    lineWrapper.zeroWidthSpace(2);
    lineWrapper.append('fghijk');
    lineWrapper.close();
    expect(out.toString()).toEqual('abcde\n    fghijk');
  });

  it('multipleWrite', () => {
    const out = new StringBuffer();
    const lineWrapper = new LineWrapper(out, '  ', 10);
    lineWrapper.append('ab');
    lineWrapper.wrappingSpace(1);
    lineWrapper.append('cd');
    lineWrapper.wrappingSpace(1);
    lineWrapper.append('ef');
    lineWrapper.wrappingSpace(1);
    lineWrapper.append('gh');
    lineWrapper.wrappingSpace(1);
    lineWrapper.append('ij');
    lineWrapper.wrappingSpace(1);
    lineWrapper.append('kl');
    lineWrapper.wrappingSpace(1);
    lineWrapper.append('mn');
    lineWrapper.wrappingSpace(1);
    lineWrapper.append('op');
    lineWrapper.wrappingSpace(1);
    lineWrapper.append('qr');
    lineWrapper.close();
    expect(out.toString()).toEqual('ab cd ef\n  gh ij kl\n  mn op qr');
  });

  it('fencepost', () => {
    const out = new StringBuffer();
    const lineWrapper = new LineWrapper(out, '  ', 10);
    lineWrapper.append('abcde');
    lineWrapper.append('fghij');
    lineWrapper.wrappingSpace(2);
    lineWrapper.append('k');
    lineWrapper.append('lmnop');
    lineWrapper.close();
    expect(out.toString()).toEqual('abcdefghij\n    klmnop');
  });

  it('fencepostZeroWidth', () => {
    const out = new StringBuffer();
    const lineWrapper = new LineWrapper(out, '  ', 10);
    lineWrapper.append('abcde');
    lineWrapper.append('fghij');
    lineWrapper.zeroWidthSpace(2);
    lineWrapper.append('k');
    lineWrapper.append('lmnop');
    lineWrapper.close();
    expect(out.toString()).toEqual('abcdefghij\n    klmnop');
  });

  it('overlyLongLinesWithoutLeadingSpace', () => {
    const out = new StringBuffer();
    const lineWrapper = new LineWrapper(out, '  ', 10);
    lineWrapper.append('abcdefghijkl');
    lineWrapper.close();
    expect(out.toString()).toEqual('abcdefghijkl');
  });

  it('overlyLongLinesWithLeadingSpace', () => {
    const out = new StringBuffer();
    const lineWrapper = new LineWrapper(out, '  ', 10);
    lineWrapper.wrappingSpace(2);
    lineWrapper.append('abcdefghijkl');
    lineWrapper.close();
    expect(out.toString()).toEqual('\n    abcdefghijkl');
  });

  it('overlyLongLinesWithLeadingZeroWidth', () => {
    const out = new StringBuffer();
    const lineWrapper = new LineWrapper(out, '  ', 10);
    lineWrapper.zeroWidthSpace(2);
    lineWrapper.append('abcdefghijkl');
    lineWrapper.close();
    expect(out.toString()).toEqual('abcdefghijkl');
  });

  it('noWrapEmbeddedNewlines', () => {
    const out = new StringBuffer();
    const lineWrapper = new LineWrapper(out, '  ', 10);
    lineWrapper.append('abcde');
    lineWrapper.wrappingSpace(2);
    lineWrapper.append('fghi\njklmn');
    lineWrapper.append('opqrstuvwxy');
    lineWrapper.close();
    expect(out.toString()).toEqual('abcde fghi\njklmnopqrstuvwxy');
  });

  it('wrapEmbeddedNewlines', () => {
    const out = new StringBuffer();
    const lineWrapper = new LineWrapper(out, '  ', 10);
    lineWrapper.append('abcde');
    lineWrapper.wrappingSpace(2);
    lineWrapper.append('fghij\nklmn');
    lineWrapper.append('opqrstuvwxy');
    lineWrapper.close();
    expect(out.toString()).toEqual('abcde\n    fghij\nklmnopqrstuvwxy');
  });

  it('noWrapEmbeddedNewlines_ZeroWidth', () => {
    const out = new StringBuffer();
    const lineWrapper = new LineWrapper(out, '  ', 10);
    lineWrapper.append('abcde');
    lineWrapper.zeroWidthSpace(2);
    lineWrapper.append('fghij\nklmn');
    lineWrapper.append('opqrstuvwxyz');
    lineWrapper.close();
    expect(out.toString()).toEqual('abcdefghij\nklmnopqrstuvwxyz');
  });

  it('wrapEmbeddedNewlines_ZeroWidth', () => {
    const out = new StringBuffer();
    const lineWrapper = new LineWrapper(out, '  ', 10);
    lineWrapper.append('abcde');
    lineWrapper.zeroWidthSpace(2);
    lineWrapper.append('fghijk\nlmn');
    lineWrapper.append('opqrstuvwxy');
    lineWrapper.close();
    expect(out.toString()).toEqual('abcde\n    fghijk\nlmnopqrstuvwxy');
  });

  it('noWrapMultipleNewlines', () => {
    const out = new StringBuffer();
    const lineWrapper = new LineWrapper(out, '  ', 10);
    lineWrapper.append('abcde');
    lineWrapper.wrappingSpace(2);
    lineWrapper.append('fghi\nklmnopq\nr');
    lineWrapper.wrappingSpace(2);
    lineWrapper.append('stuvwxyz');
    lineWrapper.close();
    expect(out.toString()).toEqual('abcde fghi\nklmnopq\nr stuvwxyz');
  });

  it('wrapMultipleNewlines', () => {
    const out = new StringBuffer();
    const lineWrapper = new LineWrapper(out, '  ', 10);
    lineWrapper.append('abcde');
    lineWrapper.wrappingSpace(2);
    lineWrapper.append('fghi\nklmnopq\nrs');
    lineWrapper.wrappingSpace(2);
    lineWrapper.append('tuvwxyz1');
    lineWrapper.close();
    expect(out.toString()).toEqual('abcde fghi\nklmnopq\nrs\n    tuvwxyz1');
  });
});