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svelte/test/runtime-puppeteer/assert.js

55 lines
1.4 KiB

export function deepEqual(a, b, message) {
if (!is_equal(a, b)) {
throw new Error(message || `Expected ${JSON.stringify(a)} to equal ${JSON.stringify(b)}`);
}
}
function is_equal(a, b) {
if (a && typeof a === 'object') {
const is_array = Array.isArray(a);
if (Array.isArray(b) !== is_array) return false;
if (is_array) {
if (a.length !== b.length) return false;
return a.every((value, i) => is_equal(value, b[i]));
}
const a_keys = Object.keys(a).sort();
const b_keys = Object.keys(b).sort();
if (a_keys.join(',') !== b_keys.join(',')) return false;
return a_keys.every(key => is_equal(a[key], b[key]));
}
return a === b;
}
export function equal(a, b, message) {
if (a != b) throw new Error(message || `Expected ${a} to equal ${b}`);
}
export function ok(condition, message) {
if (!condition) throw new Error(message || `Expected ${condition} to be truthy`);
}
export function htmlEqual(actual, expected, message) {
return deepEqual(
normalizeHtml(window, actual),
normalizeHtml(window, expected),
message
);
}
function normalizeHtml(window, html) {
try {
const node = window.document.createElement('div');
node.innerHTML = html
.replace(/<!--.*?-->/g, '')
.replace(/>[\s\r\n]+</g, '><')
.trim();
return node.innerHTML.replace(/<\/?noscript\/?>/g, '');
} catch (err) {
throw new Error(`Failed to normalize HTML:\n${html}`);
}
}