1) [webkit] › tests/js.spec.js:4:1 › toggle_attribute ──────────────────────────────────────────── Error: expect(received).toEqual(expected) // deep equality Expected: ArrayContaining [{"attr": "style", "newValue": "display: block;", "oldValue": "display: none;"}, {"attr": "aria-expanded", "newValue": "true", "oldValue": "false"}, {"attr": "open", "newValue": "true", "oldValue": null}, ObjectContaining {"attr": "class", "newValue": "fade-in"}, ObjectContaining {"attr": "class", "oldValue": "fade-in"}] Received: [{"attr": "aria-expanded", "newValue": "true", "oldValue": "false"}, {"attr": "aria-expanded", "newValue": "true", "oldValue": "true"}, {"attr": "open", "newValue": "true", "oldValue": null}, {"attr": "class", "newValue": "fade-in", "oldValue": null}, {"attr": "style", "newValue": "display: block;", "oldValue": "display: none;"}] 12 | // wait for the transition time (set to 50) 13 | await page.waitForTimeout(100); > 14 | expect(await changes()).toEqual( | ^ 15 | expect.arrayContaining([ 16 | { 17 | attr: "style", at /__w/phoenix_live_view/phoenix_live_view/test/e2e/tests/js.spec.js:14:27