Merge pull request #3780 from hideokamoto/add/test/warning

Make component unit test for editor/components/warning/index.js

editor/components/warning/test/__snapshots__/index.js.snap

@@ -0,0 +1,12 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`Warning should match snapshot 1`] = `
+<div
+  className="editor-warning"
+>
+  <Dashicon
+    icon="warning"
+  />
+  error
+</div>
+`;

editor/components/warning/test/index.js

@@ -0,0 +1,24 @@
+/**
+ * External dependencies
+ */
+import { shallow } from 'enzyme';
+
+/**
+ * Internal dependencies
+ */
+import Warning from '../index';
+
+describe( 'Warning', () => {
+	it( 'should match snapshot', () => {
+		const wrapper = shallow( <Warning>error</Warning> );
+		expect( wrapper ).toMatchSnapshot();
+	} );
+	it( 'should has valid class', () => {
+		const wrapper = shallow( <Warning /> );
+		expect( wrapper.hasClass( 'editor-warning' ) ).toBe( true );
+	} );
+	it( 'should show child error message element', () => {
+		const wrapper = shallow( <Warning><p>message</p></Warning> );
+		expect( wrapper.find( 'p' ).text() ).toBe( 'message' );
+	} );
+} );