ClientFunction not working for returning large object/array

Are you requesting a feature or reporting a bug?

Bug

What is the current behavior?

TestCafe keeps waiting at ClientFunction when returning object/array which is very large for following code.

const getFirstGridTotalRows = ClientFunction(() => {
    return window.gridRef[0].filteredRows();
});
const gridData = await getFirstGridTotalRows();

gridData is expected to have around 99k objects in an array. But while running tests, tests are not going forward. It is not even throwing any error. it just waits.

What is the expected behavior?

Should either throw error of memory limit or return the data.

How would you reproduce the current behavior (if this is a bug)?

Take any very large dataset and return it from application url through ClientFunction.

Provide the test code and the tested page URL (if applicable)

Tested page URL:

Test code

const getFirstGridTotalRows = ClientFunction(() => {
    return window.gridRef[0].filteredRows();
});
const gridData = await getFirstGridTotalRows();

Specify your

• operating system: Windows 7
• testcafe version: 0.11.1
• node.js version: 6.9.1

[inikulin]

I was able to reproduce the issue. The cause of the problem is that browser runs out of memory when we try to serialize enormously large object. I guess the best option here will be a limit for the returned object size, let’s just throw an error with some descriptive message.

[lock[bot]]

This thread has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs or feature requests. For TestCafe API, usage and configuration inquiries, we recommend asking them on StackOverflow.