add unit coverage for component TraceIDSearchInput

Signed-off-by: Tim Klever <[email protected]>

packages/jaeger-ui/src/components/App/TraceIDSearchInput.test.js

@@ -0,0 +1,57 @@
+/**
+ * Copyright (c) 2020 Uber Technologies, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import React from 'react';
+import { mount } from 'enzyme';
+
+import { createMemoryHistory } from 'history';
+import { Router } from 'react-router-dom';
+import TraceIDSearchInput from './TraceIDSearchInput';
+
+describe('<TraceIDSearchInput />', () => {
+  let wrapper;
+  let history;
+
+  beforeEach(() => {
+    history = createMemoryHistory();
+    wrapper = mount(
+      <Router history={history}>
+        <TraceIDSearchInput />
+      </Router>
+    ).find('form');
+  });
+
+  it('renders as expected', () => {
+    expect(wrapper).toMatchSnapshot();
+  });
+
+  it('pushes input id to history', () => {
+    const idInput = wrapper.find('input');
+    const traceId = 'MOCK-TRACE-ID';
+    idInput.instance().value = traceId;
+
+    wrapper.simulate('submit');
+
+    expect(history.length).toEqual(2);
+    expect(history.location.pathname).toEqual(`/trace/${traceId}`);
+  });
+
+  it('does not push to history on falsy input value', () => {
+    wrapper.simulate('submit');
+
+    expect(history.length).toEqual(1);
+  });
+});

packages/jaeger-ui/src/components/App/__snapshots__/TraceIDSearchInput.test.js.snap

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+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`<TraceIDSearchInput /> renders as expected 1`] = `
+<form
+  className="ant-form ant-form-horizontal TraceIDSearchInput--form"
+  onSubmit={[Function]}
+>
+  <input
+    autosize={null}
+    className="ant-input"
+    disabled={false}
+    name="idInput"
+    onKeyDown={[Function]}
+    placeholder="Lookup by Trace ID..."
+    type="text"
+  />
+</form>
+`;