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const assert = require('assert')
const sinon = require('sinon')
const TokenRatesController = require('../../../../app/scripts/controllers/token-rates')
const ObservableStore = require('obs-store')
describe('TokenRatesController', () => {
it('should listen for preferences store updates', () => {
const preferences = new ObservableStore({ tokens: [] })
const controller = new TokenRatesController({ preferences })
preferences.putState({ tokens: ['foo'] })
assert.deepEqual(controller._tokens, ['foo'])
})
it('should poll on correct interval', async () => {
const stub = sinon.stub(global, 'setInterval')
new TokenRatesController({ interval: 1337 }) // eslint-disable-line no-new
assert.strictEqual(stub.getCall(0).args[1], 1337)
stub.restore()
})
it('should fetch each token rate based on address', async () => {
const controller = new TokenRatesController()
controller.isActive = true
controller.fetchExchangeRate = address => address
controller.tokens = [{ address: 'foo' }, { address: 'bar' }]
await controller.updateExchangeRates()
assert.deepEqual(controller.store.getState().contractExchangeRates, { foo: 'foo', bar: 'bar' })
})
})
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