You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
svelte/test/helpers.js

140 lines
3.3 KiB

import jsdom from 'jsdom';
import assert from 'assert';
import * as fs from 'fs';
import * as consoleGroup from 'console-group';
consoleGroup.install();
import * as sourceMapSupport from 'source-map-support';
sourceMapSupport.install();
// for coverage purposes, we need to test source files,
// but for sanity purposes, we need to test dist files
export const svelte = process.env.COVERAGE ?
require( '../src/index.js' ) :
require( '../compiler/svelte.js' );
export function exists ( path ) {
try {
fs.statSync( path );
return true;
} catch ( err ) {
return false;
}
}
export function tryToLoadJson ( file ) {
try {
return JSON.parse( fs.readFileSync( file ) );
} catch ( err ) {
if ( err.code !== 'ENOENT' ) throw err;
return null;
}
}
export function tryToReadFile ( file ) {
try {
return fs.readFileSync( file, 'utf-8' );
} catch ( err ) {
if ( err.code !== 'ENOENT' ) throw err;
return null;
}
}
export function env () {
return new Promise( ( fulfil, reject ) => {
jsdom.env( '<main></main>', ( err, window ) => {
if ( err ) {
reject( err );
} else {
global.document = window.document;
fulfil( window );
}
});
});
}
function cleanChildren ( node ) {
let previous = null;
[ ...node.childNodes ].forEach( child => {
if ( child.nodeType === 8 ) {
// comment
node.removeChild( child );
return;
}
if ( child.nodeType === 3 ) {
if ( node.namespaceURI === 'http://www.w3.org/2000/svg' && node.tagName !== 'text' && node.tagName !== 'tspan' ) {
node.removeChild( child );
}
child.data = child.data.replace( /\s{2,}/, '\n' );
// text
if ( previous && previous.nodeType === 3 ) {
previous.data += child.data;
previous.data = previous.data.replace( /\s{2,}/, '\n' );
node.removeChild( child );
}
}
else {
cleanChildren( child );
}
previous = child;
});
// collapse whitespace
if ( node.firstChild && node.firstChild.nodeType === 3 ) {
node.firstChild.data = node.firstChild.data.replace( /^\s+/, '' );
if ( !node.firstChild.data ) node.removeChild( node.firstChild );
}
if ( node.lastChild && node.lastChild.nodeType === 3 ) {
node.lastChild.data = node.lastChild.data.replace( /\s+$/, '' );
if ( !node.lastChild.data ) node.removeChild( node.lastChild );
}
}
export function setupHtmlEqual () {
return env().then( window => {
assert.htmlEqual = ( actual, expected, message ) => {
window.document.body.innerHTML = actual.replace( />[\s\r\n]+</g, '><' ).trim();
cleanChildren( window.document.body, '' );
actual = window.document.body.innerHTML;
window.document.body.innerHTML = expected.replace( />[\s\r\n]+</g, '><' ).trim();
cleanChildren( window.document.body, '' );
expected = window.document.body.innerHTML;
assert.deepEqual( actual, expected, message );
};
});
}
export function loadConfig ( file ) {
try {
const resolved = require.resolve( file );
delete require.cache[ resolved ];
return require( resolved ).default;
} catch ( err ) {
if ( err.code === 'E_NOT_FOUND' ) {
return {};
}
throw err;
}
}
export function addLineNumbers ( code ) {
return code.split( '\n' ).map( ( line, i ) => {
i = String( i + 1 );
while ( i.length < 3 ) i = ` ${i}`;
return `${i}: ${line.replace( /^\t+/, match => match.split( '\t' ).join( ' ' ) )}`;
}).join( '\n' );
}