test to show back browsing is broken

after selecting a node

client/app/scripts/stores/__tests__/app-store-test.js

@@ -5,8 +5,17 @@ describe('AppStore', function() {
   let AppStore;
   let registeredCallback;
 
+  // fixtures
+
+  const NODE_SET = {n1: {id: 'n1'}, n2: {id: 'n2'}};
+
   // actions
 
+  const ClickNodeAction = {
+    type: ActionTypes.CLICK_NODE,
+    nodeId: 'n1'
+  };
+
   const ClickTopologyAction = {
     type: ActionTypes.CLICK_TOPOLOGY,
     topologyId: 'topo1'
@@ -17,6 +26,21 @@ describe('AppStore', function() {
     grouping: 'grouped'
   };
 
+  const HitEscAction = {
+    type: ActionTypes.HIT_ESC_KEY
+  };
+
+  const ReceiveNodesDeltaAction = {
+    type: ActionTypes.RECEIVE_NODES_DELTA,
+    delta: {
+      add: [{
+        id: 'n1'
+      }, {
+        id: 'n2'
+      }]
+    }
+  };
+
   const ReceiveTopologiesAction = {
     type: ActionTypes.RECEIVE_TOPOLOGIES,
     topologies: [{
@@ -26,6 +50,11 @@ describe('AppStore', function() {
     }]
   };
 
+  const RouteAction = {
+    type: ActionTypes.ROUTE_TOPOLOGY,
+    state: {}
+  };
+
   beforeEach(function() {
     AppStore = require('../app-store');
     registeredCallback = AppStore.registeredCallback;
@@ -58,4 +87,42 @@ describe('AppStore', function() {
     expect(AppStore.getCurrentTopologyUrl()).toBe('/topo1grouped');
   });
 
+  // browsing
+
+  it('shows nodes that were received', function() {
+    registeredCallback(ReceiveNodesDeltaAction);
+    expect(AppStore.getNodes()).toEqual(NODE_SET);
+  });
+
+  it('gets selected node after click', function() {
+    registeredCallback(ReceiveNodesDeltaAction);
+
+    registeredCallback(ClickNodeAction);
+    expect(AppStore.getSelectedNodeId()).toBe('n1');
+    expect(AppStore.getNodes()).toEqual(NODE_SET);
+
+    registeredCallback(HitEscAction)
+    expect(AppStore.getSelectedNodeId()).toBe(null);
+    expect(AppStore.getNodes()).toEqual(NODE_SET);
+  });
+
+  it('keeps showing nodes on navigating back after node click', function() {
+    registeredCallback(ReceiveNodesDeltaAction);
+    // TODO clear AppStore cache
+    expect(AppStore.getAppState())
+      .toEqual({"topologyId":"topo1","grouping":"grouped","selectedNodeId": null});
+
+    registeredCallback(ClickNodeAction);
+    expect(AppStore.getAppState())
+      .toEqual({"topologyId":"topo1","grouping":"grouped","selectedNodeId": 'n1'});
+
+    // go back in browsing
+    RouteAction.state = {"topologyId":"topo1","grouping":"grouped","selectedNodeId": null};
+    registeredCallback(RouteAction);
+    expect(AppStore.getSelectedNodeId()).toBe(null);
+    expect(AppStore.getNodes()).toEqual(NODE_SET);
+
+  });
+
+
 });