1 files changed, 91 insertions, 0 deletions
diff --git a/ui/app/components/send/currency-display/tests/currency-display.test.js b/ui/app/components/send/currency-display/tests/currency-display.test.js
new file mode 100644
index 000000000..c9560b81c
--- /dev/null
+++ b/ui/app/components/send/currency-display/tests/currency-display.test.js
@@ -0,0 +1,91 @@
+import React from 'react'
+import assert from 'assert'
+import sinon from 'sinon'
+import { shallow, mount } from 'enzyme'
+import CurrencyDisplay from '../currency-display'
+
+describe('', () => {
+
+  const token = {
+    address: '0xTest',
+    symbol: 'TST',
+    decimals: '13',
+  }
+
+  it('retuns ETH value for wei value', () => {
+    const wrapper = mount(<CurrencyDisplay />, {context: {t: str => str + '_t'}})
+
+    const value = wrapper.instance().getValueToRender({
+      // 1000000000000000000
+      value: 'DE0B6B3A7640000',
+    })
+
+    assert.equal(value, 1)
+  })
+
+  it('returns value of token based on token decimals', () => {
+    const wrapper = mount(<CurrencyDisplay />, {context: {t: str => str + '_t'}})
+
+    const value = wrapper.instance().getValueToRender({
+      selectedToken: token,
+      // 1000000000000000000
+      value: 'DE0B6B3A7640000',
+    })
+
+    assert.equal(value, 100000)
+  })
+
+  it('returns hex value with decimal adjustment', () => {
+
+    const wrapper = mount(
+      <CurrencyDisplay
+        selectedToken={token}
+      />, {context: {t: str => str + '_t'}})
+
+    const value = wrapper.instance().getAmount(1)
+    // 10000000000000
+    assert.equal(value, '9184e72a000')
+  })
+
+  it('#getConvertedValueToRender converts input value based on conversionRate', () => {
+
+    const wrapper = mount(
+      <CurrencyDisplay
+        primaryCurrency={'usd'}
+        convertedCurrency={'ja'}
+        conversionRate={2}
+      />, {context: {t: str => str + '_t'}})
+
+    const value = wrapper.instance().getConvertedValueToRender(32)
+
+    assert.equal(value, 64)
+  })
+
+  it('#onlyRenderConversions renders single element for converted currency and value', () => {
+    const wrapper = mount(
+      <CurrencyDisplay
+        convertedCurrency={'test'}
+      />, {context: {t: str => str + '_t'}})
+
+    const value = wrapper.instance().onlyRenderConversions(10)
+    assert.equal(value.props.className, 'currency-display__converted-value')
+    assert.equal(value.props.children, '10 TEST')
+  })
+
+  it('simulates change value in input', () => {
+    const handleChangeSpy = sinon.spy()
+
+    const wrapper = shallow(
+      <CurrencyDisplay
+        onChange={handleChangeSpy}
+      />, {context: {t: str => str + '_t'}})
+
+    const input = wrapper.find('input')
+    input.simulate('focus')
+    input.simulate('change', { target: { value: '100' } })
+
+    assert.equal(wrapper.state().valueToRender, '100')
+    assert.equal(wrapper.find('input').prop('value'), '100')
+  })
+
+})