Add unit test for new breadcrumb helper

packages/web-app-files/tests/unit/helpers/breadcrumbs.spec.js

@@ -0,0 +1,25 @@
+import { breadcrumbsFromPath, concatBreadcrumbs } from '../../../src/helpers/breadcrumbs'
+
+describe('builds an array of breadcrumbitems', () => {
+  it('from a path', () => {
+    const breadCrumbs = breadcrumbsFromPath('/files/spaces/personal/home/test', '/test')
+    expect(breadCrumbs).toEqual([
+      { allowContextActions: true, text: 'test', to: '/files/spaces/personal/home/test' }
+    ])
+  })
+
+  it('from an array of breadcrumbitems', () => {
+    const initialBreadCrumbs = [{ text: 'Foo' }, { text: 'Bar' }]
+    const breadCrumbsFromPath = breadcrumbsFromPath('/app/foo/bar?all=500', '/bar')
+    const result = concatBreadcrumbs(...initialBreadCrumbs, breadCrumbsFromPath)
+    expect(result[0]).toMatchObject({ text: 'Foo' })
+    expect(result[1]).toMatchObject({ text: 'Bar' })
+    expect(JSON.stringify(result[2])).toEqual(
+      JSON.stringify({
+        allowContextActions: undefined,
+        onClick: () => jest.fn(() => {}),
+        text: undefined
+      })
+    )
+  })
+})