1 files changed, 137 insertions, 0 deletions
diff --git a/ui/app/helpers/utils/confirm-tx.util.test.js b/ui/app/helpers/utils/confirm-tx.util.test.js
new file mode 100644
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+++ b/ui/app/helpers/utils/confirm-tx.util.test.js
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+import * as utils from './confirm-tx.util'
+import assert from 'assert'
+
+describe('Confirm Transaction utils', () => {
+  describe('increaseLastGasPrice', () => {
+    it('should increase the gasPrice by 10%', () => {
+      const increasedGasPrice = utils.increaseLastGasPrice('0xa')
+      assert.equal(increasedGasPrice, '0xb')
+    })
+
+    it('should prefix the result with 0x', () => {
+      const increasedGasPrice = utils.increaseLastGasPrice('a')
+      assert.equal(increasedGasPrice, '0xb')
+    })
+  })
+
+  describe('hexGreaterThan', () => {
+    it('should return true if the first value is greater than the second value', () => {
+      assert.equal(
+        utils.hexGreaterThan('0xb', '0xa'),
+        true
+      )
+    })
+
+    it('should return false if the first value is less than the second value', () => {
+      assert.equal(
+        utils.hexGreaterThan('0xa', '0xb'),
+        false
+      )
+    })
+
+    it('should return false if the first value is equal to the second value', () => {
+      assert.equal(
+        utils.hexGreaterThan('0xa', '0xa'),
+        false
+      )
+    })
+
+    it('should correctly compare prefixed and non-prefixed hex values', () => {
+      assert.equal(
+        utils.hexGreaterThan('0xb', 'a'),
+        true
+      )
+    })
+  })
+
+  describe('getHexGasTotal', () => {
+    it('should multiply the hex gasLimit and hex gasPrice values together', () => {
+      assert.equal(
+        utils.getHexGasTotal({ gasLimit: '0x5208', gasPrice: '0x3b9aca00' }),
+        '0x1319718a5000'
+      )
+    })
+
+    it('should prefix the result with 0x', () => {
+      assert.equal(
+        utils.getHexGasTotal({ gasLimit: '5208', gasPrice: '3b9aca00' }),
+        '0x1319718a5000'
+      )
+    })
+  })
+
+  describe('addEth', () => {
+    it('should add two values together rounding to 6 decimal places', () => {
+      assert.equal(
+        utils.addEth('0.12345678', '0'),
+        '0.123457'
+      )
+    })
+
+    it('should add any number of values together rounding to 6 decimal places', () => {
+      assert.equal(
+        utils.addEth('0.1', '0.02', '0.003', '0.0004', '0.00005', '0.000006', '0.0000007'),
+        '0.123457'
+      )
+    })
+  })
+
+  describe('addFiat', () => {
+    it('should add two values together rounding to 2 decimal places', () => {
+      assert.equal(
+        utils.addFiat('0.12345678', '0'),
+        '0.12'
+      )
+    })
+
+    it('should add any number of values together rounding to 2 decimal places', () => {
+      assert.equal(
+        utils.addFiat('0.1', '0.02', '0.003', '0.0004', '0.00005', '0.000006', '0.0000007'),
+        '0.12'
+      )
+    })
+  })
+
+  describe('getValueFromWeiHex', () => {
+    it('should get the transaction amount in ETH', () => {
+      const ethTransactionAmount = utils.getValueFromWeiHex({
+        value: '0xde0b6b3a7640000', toCurrency: 'ETH', conversionRate: 468.58, numberOfDecimals: 6,
+      })
+
+      assert.equal(ethTransactionAmount, '1')
+    })
+
+    it('should get the transaction amount in fiat', () => {
+      const fiatTransactionAmount = utils.getValueFromWeiHex({
+        value: '0xde0b6b3a7640000', toCurrency: 'usd', conversionRate: 468.58, numberOfDecimals: 2,
+      })
+
+      assert.equal(fiatTransactionAmount, '468.58')
+    })
+  })
+
+  describe('getTransactionFee', () => {
+    it('should get the transaction fee in ETH', () => {
+      const ethTransactionFee = utils.getTransactionFee({
+        value: '0x1319718a5000', toCurrency: 'ETH', conversionRate: 468.58, numberOfDecimals: 6,
+      })
+
+      assert.equal(ethTransactionFee, '0.000021')
+    })
+
+    it('should get the transaction fee in fiat', () => {
+      const fiatTransactionFee = utils.getTransactionFee({
+        value: '0x1319718a5000', toCurrency: 'usd', conversionRate: 468.58, numberOfDecimals: 2,
+      })
+
+      assert.equal(fiatTransactionFee, '0.01')
+    })
+  })
+
+  describe('formatCurrency', () => {
+    it('should format USD values', () => {
+      const value = utils.formatCurrency('123.45', 'usd')
+      assert.equal(value, '$123.45')
+    })
+  })
+})