Clash Royale CLAN TAG

Sinon Stub : functions that are called from within another function

I am trying stub my main function but this function call other function that is inside module.
For example:

MY MODULE

module.exports = {
main,
other
}
function main(val) {
if(other(val)) {
return 'OK'
} else {
return 'KO'
}
}

function other(val) {
return x>1
}


TEST.SPEC

const sinon = require('sinon')
describe(('Test My Module'), () => {
it('I want to get KO', () => {
const myModule = require('myModule')
const stubOther = sinon.stub(myModule, 'other')
stubOther.withArgs(0).returns(true)
console.log(myModule.main(0))
})
})


The other function always is executed and return false. When , actually, I want to get that other function return true.
Can you help me ?
Thanks

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