Merge pull request #5290 from MetaMask/i5289-gettokendata

Fix exception thrown on getTokenData

1 files changed, 22 insertions, 0 deletions

diff --git a/ui/app/helpers/tests/transactions.util.test.js b/ui/app/helpers/tests/transactions.util.test.js
new file mode 100644
index 000000000..103a84a8c
--- /dev/null
+++ b/ui/app/helpers/tests/transactions.util.test.js
@@ -0,0 +1,22 @@
+import * as utils from '../transactions.util'
+import assert from 'assert'
+
+describe('Transactions utils', () => {
+  describe('getTokenData', () => {
+    it('should return token data', () => {
+      const tokenData = utils.getTokenData('0xa9059cbb00000000000000000000000050a9d56c2b8ba9a5c7f2c08c3d26e0499f23a7060000000000000000000000000000000000000000000000000000000000004e20')
+      assert.ok(tokenData)
+      const { name, params } = tokenData
+      assert.equal(name, 'transfer')
+      const [to, value] = params
+      assert.equal(to.name, '_to')
+      assert.equal(to.type, 'address')
+      assert.equal(value.name, '_value')
+      assert.equal(value.type, 'uint256')
+    })
+
+    it('should not throw errors when called without arguments', () => {
+      assert.doesNotThrow(() => utils.getTokenData())
+    })
+  })
+})