Add Breadcrumbs test

__tests__/components/Breadcrumbs.test.jsx

@@ -0,0 +1,70 @@
+import React from 'react';
+import { mount } from 'enzyme';
+import { MemoryRouter } from 'react-router-dom';
+import Breadcrumbs from '../../src/components/Breadcrumbs/Breadcrumbs';
+
+describe('<Breadcrumb />', () => {
+  let breadcrumbWrapper;
+  let breadcrumb;
+  let breadcrumbItem;
+  let breadcrumbHeading;
+
+  const config = {
+    '/foo': 'Foo',
+    '/foo/1': 'One',
+    '/foo/1/bar': 'Bar',
+    '/foo/1/bar/fiz': 'Fiz'
+  };
+
+  const findChildren = () => {
+    breadcrumb = breadcrumbWrapper.find('Breadcrumb');
+    breadcrumbItem = breadcrumbWrapper.find('BreadcrumbItem');
+    breadcrumbHeading = breadcrumbWrapper.find('BreadcrumbHeading');
+  };
+
+  test('initially renders succesfully', () => {
+    breadcrumbWrapper = mount(
+      <MemoryRouter initialEntries={['/foo/1/bar']} initialIndex={0}>
+        <Breadcrumbs
+          breadcrumbConfig={config}
+        />
+      </MemoryRouter>
+    );
+
+    findChildren();
+
+    expect(breadcrumb).toHaveLength(1);
+    expect(breadcrumbItem).toHaveLength(2);
+    expect(breadcrumbHeading).toHaveLength(1);
+    expect(breadcrumbItem.first().text()).toBe('Foo');
+    expect(breadcrumbItem.last().text()).toBe('One');
+    expect(breadcrumbHeading.text()).toBe('Bar');
+    breadcrumbWrapper.unmount();
+  });
+
+  test('renders breadcrumb items defined in breadcrumbConfig', () => {
+    const routes = [
+      ['/fo', 0],
+      ['/foo', 0],
+      ['/foo/1', 1],
+      ['/foo/baz', 1],
+      ['/foo/1/bar', 2],
+      ['/foo/1/bar/fiz', 3],
+    ];
+
+    routes.forEach(([location, crumbLength]) => {
+      const breadcrumbWrapper = mount(
+        <MemoryRouter initialEntries={[location]}>
+          <Breadcrumbs
+            breadcrumbConfig={config}
+          />
+        </MemoryRouter>
+      );
+
+      expect(breadcrumbWrapper.find('BreadcrumbItem')).toHaveLength(crumbLength);
+      breadcrumbWrapper.unmount();
+    })
+
+  });
+
+});

src/components/Breadcrumbs/Breadcrumbs.jsx

@@ -23,6 +23,7 @@ const Breadcrumbs = ({ breadcrumbConfig }) => {
     >
       <Breadcrumb>
         <Route
+          path="/:path"
           render={(props) => <Crumb breadcrumbConfig={breadcrumbConfig} {...props} />}
         />
       </Breadcrumb>