Single asset dropdown fix (#6900)

* Disable open dropdown for single asset

* add test to check single asset in dropdown

* fix lint errors, remove unused import

2 files changed, 9 insertions, 2 deletions

diff --git a/ui/app/pages/send/send-content/send-asset-row/send-asset-row.component.js b/ui/app/pages/send/send-content/send-asset-row/send-asset-row.component.js
index de2d9462f..1dcd0bd2c 100644
--- a/ui/app/pages/send/send-content/send-asset-row/send-asset-row.component.js
+++ b/ui/app/pages/send/send-content/send-asset-row/send-asset-row.component.js
@@ -59,7 +59,7 @@ export default class SendAssetRow extends Component {
       <SendRowWrapper label={`${t('asset')}:`}>
         <div className="send-v2__asset-dropdown">
           { this.renderSelectedToken() }
-          { this.renderAssetDropdown() }
+          { this.props.tokens.length > 0 ? this.renderAssetDropdown() : null }
         </div>
       </SendRowWrapper>
     )
@@ -101,7 +101,7 @@ export default class SendAssetRow extends Component {
 
     return (
       <div
-        className="send-v2__asset-dropdown__asset"
+        className={ this.props.tokens.length > 0 ? 'send-v2__asset-dropdown__asset' : 'send-v2__asset-dropdown__single-asset' }
         onClick={() => this.selectToken()}
       >
         <div className="send-v2__asset-dropdown__asset-icon">
diff --git a/ui/app/pages/send/send-content/tests/send-content-component.test.js b/ui/app/pages/send/send-content/tests/send-content-component.test.js
index 521c6523e..d172423ab 100644
--- a/ui/app/pages/send/send-content/tests/send-content-component.test.js
+++ b/ui/app/pages/send/send-content/tests/send-content-component.test.js
@@ -50,4 +50,11 @@ describe('SendContent Component', function () {
       assert.equal(PageContainerContentChild.childAt(5).exists(), false)
     })
   })
+
+  it('should not render the asset dropdown if token length is 0 ', () => {
+    wrapper.setProps({ tokens: [] })
+    const PageContainerContentChild = wrapper.find(PageContainerContent).children()
+    assert(PageContainerContentChild.childAt(2).is(SendAssetRow))
+    assert(PageContainerContentChild.childAt(2).find('send-v2__asset-dropdown__single-asset'), true)
+  })
 })