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Create test.spec.js #24

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47 changes: 47 additions & 0 deletions tests/cypress/integration/performance/test.spec.js
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// <reference types="Cypress" />

describe('WordPress', () => {

before(() => {
cy.login(Cypress.env('WP_USERNAME'), Cypress.env('WP_PASSWORD'));
});

it('measures page load', () => {

cy.fixture('performance')
.then(
(entries) => {
entries
.forEach(

@wpscholar wpscholar Feb 6, 2026

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Consider using cy.wrap(entries).each(...) instead of forEach. Cypress recommends each for command sequencing; forEach can make command ordering and failures harder to reason about when iterating.

({url, description, duration: loadTimeInMilliseconds }) => {

cy.visit(
url,
{
onBeforeLoad: (win) => {
win.performance.mark('start-loading');
},
onLoad: (win) => {
win.performance.mark('end-loading');
}
}
)
.its('performance')
.then((performance) => {
performance.measure('pageLoad', 'start-loading', 'end-loading');
const measure = performance.getEntriesByName('pageLoad')[0];

@wpscholar wpscholar Feb 6, 2026

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Since this runs multiple cy.visit calls, the performance entries will accumulate. Either clear marks/measures before each visit (performance.clearMarks()/clearMeasures()), use unique mark names per URL, or grab the last entry from getEntriesByName instead of [0] to avoid stale measurements.

const duration = measure.duration;
assert.isAtMost(duration, loadTimeInMilliseconds);

cy.log(
`[PERFORMANCE] Page load duration for ${ description }: ${ duration / 1000 } seconds`
);
});
});

}
);
}
);

});