Make breadcrumbs component dumb

This also fixes the "calling setState on an unmounted component"
warning.

Also, instead of using CSS classes to target DOM nodes in integration
tests, we use `data-test` attributes. We can later strip these out of
the build using a babel plugin, if desired. Note: there are other ways
of doing this, but for the time being the `data-test` attribute best
matches the current code with the least number of changes and is clear
enough. It's also a recommended approach by Kent C Dodds, if that holds
any weight.

static_src/components/app_container.jsx

@@ -7,7 +7,7 @@ import { appHealth, worstAppInstanceState } from '../util/health';
 import { appStates } from '../constants';
 import { config } from 'skin';
 import AppStore from '../stores/app_store.js';
-import Breadcrumbs from './breadcrumbs.jsx';
+import Breadcrumbs from './breadcrumbs';
 import DomainStore from '../stores/domain_store.js';
 import EnvStore from '../stores/env_store.js';
 import RouteStore from '../stores/route_store.js';
@@ -193,7 +193,7 @@ export default class AppContainer extends React.Component {
 
 
   render() {
-    const { app, envRequest, envUpdateError } = this.state;
+    const { org, space, app, envRequest, envUpdateError } = this.state;
 
     let loading = <Loading text="Loading app" />;
     let content = <div>{ loading }</div>;
@@ -211,7 +211,7 @@ export default class AppContainer extends React.Component {
         <div>
           <div className={ this.styler('grid') }>
             <div className={ this.styler('grid-width-12') }>
-              <Breadcrumbs />
+              <Breadcrumbs org={org} space={space} app={app} />
               <PageHeader title={ title }>
                 { this.error }
                 { this.openApp }

static_src/components/breadcrumbs/breadcrumbs.js

@@ -0,0 +1,47 @@
+import React from 'react';
+
+import { appPropType } from '../../stores/app_store';
+import { orgPropType } from '../../stores/org_store';
+import { spacePropType } from '../../stores/space_store';
+import Item from './breadcrumbs_item';
+import { orgHref, spaceHref } from '../../util/url';
+
+const propTypes = {
+  org: orgPropType.isRequired,
+  space: spacePropType,
+  app: appPropType
+};
+
+const Breadcrumbs = ({ org, space, app }) => {
+  const items = [
+    <Item key="home" href="/" testLabel="overview">
+      Overview
+    </Item>
+  ];
+
+  if (org && space) {
+    items.push(
+      <Item key={org.guid} href={orgHref(org)} testLabel="org">
+        {org.name}
+      </Item>
+    );
+  }
+
+  if (org && space && app) {
+    items.push(
+      <Item key={space.guid} href={spaceHref(org, space)} testLabel="space">
+        {space.name}
+      </Item>
+    );
+  }
+
+  return (
+    <ol className="breadcrumbs" data-test="breadcrumbs">
+      {items}
+    </ol>
+  );
+};
+
+Breadcrumbs.propTypes = propTypes;
+
+export default Breadcrumbs;

static_src/components/breadcrumbs/breadcrumbs_item.js

@@ -0,0 +1,26 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+
+const propTypes = {
+  children: PropTypes.node.isRequired,
+  href: PropTypes.string,
+  testLabel: PropTypes.string
+};
+
+const BreadcrumbsItem = ({ children, href, testLabel }) => (
+  <li className="breadcrumbs-item">
+    {href ? (
+      <a className="breadcrumbs-item-link" href={href} data-test={testLabel}>
+        {children}
+      </a>
+    ) : (
+      <span className="breadcrumbs-item-current" data-test={testLabel}>
+        {children}
+      </span>
+    )}
+  </li>
+);
+
+BreadcrumbsItem.propTypes = propTypes;
+
+export default BreadcrumbsItem;

static_src/components/breadcrumbs/index.js

@@ -0,0 +1 @@
+export { default } from './breadcrumbs';

static_src/components/org_container.jsx

@@ -7,7 +7,7 @@ import style from 'cloudgov-style/css/cloudgov-style.css';
 
 
 import AppCountStatus from './app_count_status.jsx';
-import Breadcrumbs from './breadcrumbs.jsx';
+import Breadcrumbs from './breadcrumbs';
 import EntityIcon from './entity_icon.jsx';
 import EntityEmpty from './entity_empty.jsx';
 import Loading from './loading.jsx';
@@ -126,12 +126,13 @@ export default class OrgContainer extends React.Component {
   }
 
   render() {
+    const { org } = this.state;
     const state = this.state;
     let loading = <Loading text="Loading organization" />;
     let content = <div>{ loading }</div>;
     const title = (
       <span>
-        <EntityIcon entity="org" iconSize="large" /> { state.org.name }
+        <EntityIcon entity="org" iconSize="large" /> { org.name }
       </span>
     );
     const spaces = !state.spaces.length ? this.emptyState :
@@ -147,7 +148,7 @@ export default class OrgContainer extends React.Component {
 
     if (state.empty) {
       content = <h4 className="test-none_message">No organizations</h4>;
-    } else if (!state.loading && state.org) {
+    } else if (!state.loading && org) {
       const allApps = this.allApps();
       const allServices = this.allServices();
 
@@ -156,7 +157,7 @@ export default class OrgContainer extends React.Component {
       <div className={ this.styler('grid') }>
         <div className={ this.styler('grid') }>
           <div className={ this.styler('grid-width-12') }>
-            <Breadcrumbs />
+            <Breadcrumbs org={org} />
             <PageHeader title={ title } />
           </div>
         </div>

static_src/components/space_container.jsx

@@ -4,7 +4,7 @@ import React from 'react';
 
 import AppCountStatus from './app_count_status.jsx';
 import AppList from '../components/app_list.jsx';
-import Breadcrumbs from './breadcrumbs.jsx';
+import Breadcrumbs from './breadcrumbs';
 import EntityIcon from './entity_icon.jsx';
 import Loading from './loading.jsx';
 import Marketplace from './marketplace.jsx';
@@ -77,20 +77,21 @@ export default class SpaceContainer extends React.Component {
       return <Loading />;
     }
 
+    const { currentOrg: org, space } = this.state;
+
     let main = <div></div>;
     const title = (
       <span>
-        <EntityIcon entity="space" iconSize="large" /> { this.state.space.name }
+        <EntityIcon entity="space" iconSize="large" /> { space.name }
       </span>
     );
 
-    if (this.state.space && this.state.space.guid) {
-      const space = this.state.space;
+    if (space && space.guid) {
       main = (
       <div>
         <div className={ this.styler('grid') }>
           <div className={ this.styler('grid-width-12') }>
-            <Breadcrumbs />
+            <Breadcrumbs org={org} space={space} />
             <PageHeader title={ title } />
           </div>
         </div>

static_src/stores/org_store.js

@@ -1,15 +1,16 @@
-
-/*
- * Store for org data. Will store and update org data on changes from UI and
- * server.
- */
+import PropTypes from 'prop-types';
 
 import AppDispatcher from '../dispatcher';
 import BaseStore from './base_store.js';
 import LoginStore from './login_store.js';
 import { orgActionTypes } from '../constants.js';
 import Quicklook from '../models/quicklook';
 
+export const orgPropType = PropTypes.shape({
+  guid: PropTypes.string.isRequired,
+  name: PropTypes.string.isRequired
+});
+
 export class OrgStore extends BaseStore {
   constructor() {
     super();

static_src/stores/space_store.js

@@ -4,10 +4,16 @@
  */
 
 import Immutable from 'immutable';
+import PropTypes from 'prop-types';
 
 import BaseStore from './base_store.js';
 import { orgActionTypes, spaceActionTypes } from '../constants.js';
 
+export const spacePropType = PropTypes.shape({
+  guid: PropTypes.string.isRequired,
+  name: PropTypes.string.isRequired
+});
+
 class SpaceStore extends BaseStore {
   constructor() {
     super();

static_src/test/functional/pageobjects/breadcrumbs.element.js

@@ -1,19 +1,12 @@
-
 import BaseElement from './base.element';
 
-// https://www.martinfowler.com/bliki/PageObject.html
-//
-// Represents a DOM element for making assertions against. This makes it
-// easier to abstract some of the webdriver details from the UI component.
-
-// TODO attach to class as static property
-const breadcrumbs = '.test-breadcrumbs';
+const breadcrumbs = '[data-test="breadcrumbs"]';
 
 const selectors = {
   primary: breadcrumbs,
-  overview: `${breadcrumbs} li:first-child a`,
-  org: `${breadcrumbs} li:nth-child(1) a`,
-  space: `${breadcrumbs} li:last-child a`
+  overview: `${breadcrumbs} [data-test="overview"]`,
+  org: `${breadcrumbs} [data-test="org"]`,
+  space: `${breadcrumbs} [data-test="space"]`
 };
 
 export default class Breadcrumbs extends BaseElement {
@@ -40,4 +33,3 @@ export default class Breadcrumbs extends BaseElement {
 }
 
 Breadcrumbs.primarySelector = selectors.primary;
-