Add tests for new dropdown component

package.json

@@ -10,6 +10,7 @@
     "dist": "npm install && gulp dist",
     "test": "npm run lint && npm run test-unit && npm run test-integration",
     "test-unit": "METAMASK_ENV=test mocha --require test/helper.js --recursive \"test/unit/**/*.js\"",
+    "test-responsive": "METAMASK_ENV=test mocha --require test/helper.js --recursive \"test/unit/responsive/**/*.js\"",
     "test-integration": "npm run buildMock && npm run buildCiUnits && testem ci -P 2",
     "lint": "gulp lint",
     "buildCiUnits": "node test/integration/index.js",

test/unit/responsive/components/dropdown-test.js

@@ -0,0 +1,51 @@
+var assert = require('assert');
+
+const additions = require('react-testutils-additions');
+const h = require('react-hyperscript');
+const ReactTestUtils = require('react-addons-test-utils');
+const sinon = require('sinon');
+const path = require('path');
+const Dropdown = require(path.join(__dirname, '..', '..', '..', '..', 'ui', 'responsive', 'app', 'components', 'dropdown.js')).Dropdown;
+const DropdownMenuItem = require(path.join(__dirname, '..', '..', '..', '..', 'ui', 'responsive', 'app', 'components', 'dropdown.js')).DropdownMenuItem;
+
+describe('Dropdown components', function () {
+  it('can render two items', function () {
+    const renderer = ReactTestUtils.createRenderer()
+
+    const onClickOutside = sinon.spy();
+    const closeMenu = sinon.spy();
+    const onClick = sinon.spy();
+
+    const dropdownComponent = h(Dropdown, {
+      isOpen: true,
+      zIndex: 11,
+      onClickOutside,
+      style: {
+        position: 'absolute',
+        right: 0,
+        top: '36px',
+      },
+      innerStyle: {},
+    }, [ // DROP MENU ITEMS
+      h('style', `
+        .drop-menu-item:hover { background:rgb(235, 235, 235); }
+        .drop-menu-item i { margin: 11px; }
+      `),
+
+      h(DropdownMenuItem, {
+        closeMenu,
+        onClick,
+      }, 'Item 1'),
+
+      h(DropdownMenuItem, {
+        closeMenu,
+        onClick,
+      }, 'Item 2'),
+    ])
+
+    const component = additions.renderIntoDocument(dropdownComponent);
+    renderer.render(dropdownComponent);
+    const items = additions.find(component, 'li');
+    assert.equal(items.length, 2);
+  });
+});