1 files changed, 12 insertions, 0 deletions
diff --git a/ui/app/components/send_/tests/send-utils.test.js b/ui/app/components/send_/tests/send-utils.test.js
index facc0e518..f3d5674b7 100644
--- a/ui/app/components/send_/tests/send-utils.test.js
+++ b/ui/app/components/send_/tests/send-utils.test.js
@@ -48,6 +48,7 @@ const {
   estimateGasPriceFromRecentBlocks,
   generateTokenTransferData,
   getAmountErrorObject,
+  getToAddressForGasUpdate,
   calcTokenBalance,
   isBalanceSufficient,
   isTokenBalanceSufficient,
@@ -421,4 +422,15 @@ describe('send utils', () => {
       assert.equal(estimateGasPriceFromRecentBlocks(mockRecentBlocks), '0x5')
     })
   })
+
+  describe('getToAddressForGasUpdate()', () => {
+    it('should return empty string if all params are undefined or null', () => {
+      assert.equal(getToAddressForGasUpdate(undefined, null), '')
+    })
+
+    it('should return the first string that is not defined or null in lower case', () => {
+      assert.equal(getToAddressForGasUpdate('A', null), 'a')
+      assert.equal(getToAddressForGasUpdate(undefined, 'B'), 'b')
+    })
+  })
 })