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ViewsDeep equal comparing not working on Cypress 9.7.0
I've updated my cypress to 9.7.0 version and right now I have a problem with deep equal. When I wrote test line of code:
expect([1,2,3]).to.deep.equal([1,2,3]);
Everything works correctly.
While I'm testing redux store I got an error which is looks
Timed out retrying after 4000ms: expected [ Array(2) ] to deeply equal [ Array(2) ]
Arrays in devtool console preview are the same... I've tried in two ways to write test. I also combined it with async and timeouts
First try:
it('Example redux check', () => {
cy.fixture('file.json').then((fixtures) => {
cy.window()
.its('store')
.invoke('getState')
.its('queue.queueItems').should('deep.equal', fixtures.store.queue.queueItems);
});
});
Second try
it('Example redux check', () => {
cy.fixture('file.json').then((fixtures) => {
const getQueueItems = (win) => {
return win.store.getState().queue.queueItems;
}
cy.window()
.pipe(getQueueItems)
.should('deep.equal', fixtures.store.queue.queueItems);
});
});
Had anyone similar issue or idea how to avoid that timeout? Exactly the same is happening while comparing async payloads...
3 answers
Answer question0
I couldn't fault the deep.equal assertion in Cypress v9.7.0, even deeply nested arrays and objects - except when the order differed.
If your problem is difference in array order, try adding package deepEqualInAnyOrder
const deepEqualInAnyOrder = require('deep-equal-in-any-order');
chai.use(deepEqualInAnyOrder);
it('matches when ordering is different', () => {
const expected = [{a:{x:1}}, {b:2},{c:3}];
expect([{a:{x:1}}, {b:2}, {c:3}]).to.deep.equal(expected) // passes
expect([{b:2}, {a:{x:1}}, {c:3}]).to.deep.equal(expected) // fails
expect([{b:2}, {a:{x:1}}, {c:3}]).to.deep.equalInAnyOrder(expected) // passes
});
0
I also wanted to see if deep.equal on the <h1> element of http://example.com would succeed.
Here is my minimal, reproducible example.
// Cypress 9.7.0
it('passes deep-equal of two DOM objects', () => {
cy.visit('http://example.com')
cy.get('h1').then($el1 => { // get h1 1st time
cy.get('h1').then($el2 => { // get another copy
// Are they different objects?
expect($el1).to.not.equal($el2) // pass
expect($el1 === $el2).to.equal(false) // pass
// Do they deep-equal
expect($el1).to.deep.equal($el2) // pass
})
})
})
0
Nearly all frontends I use have Cypress including some open source ones.
It is related to a few issues opened on GitHub and affects latest versions of Cypress.
https://github.com/cypress-io/cypress/issues/21353
https://github.com/cypress-io/cypress/issues/21469
This is what I get on a WIP after upgrading some tests that use deep.equal:
Your first example looks more standard.
I recommend downgrading to a lower version. The following version worked for me before upgrade:
9.5.4