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metamask-extension/test/unit/components/balance-component-test.js

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const assert = require('assert')
const h = require('react-hyperscript')
const { createMockStore } = require('redux-test-utils')
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const { shallowWithStore } = require('../../lib/shallow-with-store')
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const BalanceComponent = require('../../../ui/app/components/balance-component')
const mockState = {
metamask: {
accounts: { abc: {} },
network: 1,
selectedAddress: 'abc',
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},
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}
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describe('BalanceComponent', function () {
let balanceComponent
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let store
let component
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beforeEach(function () {
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store = createMockStore(mockState)
component = shallowWithStore(h(BalanceComponent), store)
balanceComponent = component.dive()
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})
it('shows token balance and convert to fiat value based on conversion rate', function () {
const formattedBalance = '1.23 ETH'
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const tokenBalance = balanceComponent.instance().getTokenBalance(formattedBalance, false)
const fiatDisplayNumber = balanceComponent.instance().getFiatDisplayNumber(formattedBalance, 2)
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assert.equal('1.23 ETH', tokenBalance)
assert.equal(2.46, fiatDisplayNumber)
})
it('shows only the token balance when conversion rate is not available', function () {
const formattedBalance = '1.23 ETH'
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const tokenBalance = balanceComponent.instance().getTokenBalance(formattedBalance, false)
const fiatDisplayNumber = balanceComponent.instance().getFiatDisplayNumber(formattedBalance, 0)
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assert.equal('1.23 ETH', tokenBalance)
assert.equal('N/A', fiatDisplayNumber)
})
})