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/**
* @jest-environment jsdom
*/
import { capitalPDangit, parseHtml, preventWidows } from '../index';
describe( 'formatting', () => {
describe( '#capitalPDangtest()', function () {
test( 'should error when input is not a string', function () {
const types = [ {}, undefined, 1, true, [], function () {} ];
types.forEach( function ( type ) {
expect( function () {
capitalPDangit( type );
} ).toThrow( Error );
} );
} );
test( 'should not modify wordpress', function () {
const strings = [ 'wordpress', 'I love wordpress' ];
strings.forEach( function ( string ) {
expect( capitalPDangit( string ) ).toBe( string );
} );
} );
test( 'should return WordPress with a capital P when passed Wordpress', function () {
expect( capitalPDangit( 'Wordpress' ) ).toBe( 'WordPress' );
expect( capitalPDangit( 'I love Wordpress' ) ).toBe( 'I love WordPress' );
} );
test( 'should replace all instances of Wordpress', function () {
expect( capitalPDangit( 'Wordpress Wordpress' ) ).toBe( 'WordPress WordPress' );
expect( capitalPDangit( 'I love Wordpress and Wordpress loves me' ) ).toBe(
'I love WordPress and WordPress loves me'
);
} );
} );
describe( '#parseHtml()', function () {
test( 'should equal to null when input is not a string', function () {
const types = [ {}, undefined, 1, true, [], function () {} ];
types.forEach( function ( type ) {
expect( parseHtml( type ) ).toBeNull();
} );
} );
test( 'should return a DOM element if you pass in DOM element', function () {
const div = document.createElement( 'div' );
expect( div ).toBe( parseHtml( div ) );
} );
test( 'should return a document fragment if we pass in a string', function () {
const fragment = parseHtml( 'hello' );
expect( typeof fragment.querySelector ).toBe( 'function' );
expect( fragment.querySelectorAll( '*' ) ).toHaveLength( 0 );
} );
test( 'should return a document fragment if we pass in a HTML string', function () {
const fragment = parseHtml( '<div>hello</div>' );
expect( fragment.querySelectorAll( 'div' ) ).toHaveLength( 1 );
} );
test( 'should parseHtml and return document fragment that can be queried', function () {
const strings = [
'<span><a href="stuff">hello world</a></span>',
'<div><span></span><a href="stuff">hello world</a></div>',
];
strings.forEach( function ( string ) {
const link = parseHtml( string ).querySelectorAll( 'a' );
expect( link[ 0 ].innerHTML ).toBe( 'hello world' );
} );
} );
} );
describe( '#preventWidows()', () => {
test( 'should not modify input if type is not string', () => {
const types = [ {}, undefined, 1, true, [], function () {} ];
types.forEach( ( type ) => {
expect( preventWidows( type ) ).toBe( type );
} );
} );
test( 'should return empty string when input is all whitespace', () => {
const inputs = [ ' ', '\t', '\n' ];
inputs.forEach( ( input ) => {
expect( preventWidows( input ) ).toBe( '' );
} );
} );
test( 'should return input when only one word', () => {
expect( preventWidows( 'test' ) ).toBe( 'test' );
} );
test( 'should trim whitespace', () => {
expect( preventWidows( 'test ' ) ).toBe( 'test' );
expect( preventWidows( '\ntest string ' ) ).toBe( 'test\xA0string' );
} );
test( 'should add non-breaking space between words to keep', () => {
const input = 'I really love BBQ. It is one of my favorite foods. Beef ribs are amazing.';
expect( preventWidows( input ) ).toBe(
'I really love BBQ. It is one of my favorite foods. Beef ribs are\xA0amazing.'
);
expect( preventWidows( input, 4 ) ).toBe(
'I really love BBQ. It is one of my favorite foods. Beef\xA0ribs\xA0are\xA0amazing.'
);
} );
} );
} );
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