Revert "Delete outdated test file"

This reverts commit 23163516ed.

test/createDevTools.spec.js

@@ -0,0 +1,83 @@
+import expect from 'expect';
+import jsdom from 'mocha-jsdom';
+import React, { Component } from 'react';
+import TestUtils from 'react-addons-test-utils';
+import createDevTools from '../src/createDevTools';
+import devTools from '../src/devTools';
+import { createStore } from 'redux';
+
+class MockMonitor extends Component {
+  render() {
+    return null;
+  }
+}
+
+describe('createDevTools', () => {
+  jsdom();
+
+  it('should pass devToolsStore to monitor', () => {
+    const store = devTools()(createStore)(() => {});
+    const DevTools = createDevTools(React);
+    const tree = TestUtils.renderIntoDocument(
+      <DevTools monitor={MockMonitor} store={store} />
+    );
+    const mockMonitor = TestUtils.findRenderedComponentWithType(tree, MockMonitor);
+    expect(mockMonitor.props.store).toBe(store.devToolsStore);
+  });
+
+  it('should pass props to monitor', () => {
+    const store = devTools()(createStore)(() => {});
+    const DevTools = createDevTools(React);
+    const tree = TestUtils.renderIntoDocument(
+      <DevTools monitor={MockMonitor} store={store} one={1} two={2}/>
+    );
+    const mockMonitor = TestUtils.findRenderedComponentWithType(tree, MockMonitor);
+    expect(mockMonitor.props.one).toBe(1);
+    expect(mockMonitor.props.two).toBe(2);
+  });
+
+  it('should subscribe monitor to store updates', () => {
+    const DevTools = createDevTools(React);
+    const store = devTools()(createStore)(
+      (state, action) => {
+        switch (action.type) {
+        case 'INC':
+          return state + 1;
+        default:
+          return state;
+        }
+      },
+      0
+    );
+    const tree = TestUtils.renderIntoDocument(
+      <DevTools monitor={MockMonitor} store={store} />
+    );
+
+    store.dispatch({type: 'INC'});
+
+    const mockMonitor = TestUtils.findRenderedComponentWithType(tree, MockMonitor);
+    const currentStateIndex = mockMonitor.props.currentStateIndex;
+    const computedStates = mockMonitor.props.computedStates;
+
+    expect(computedStates[currentStateIndex].state).toBe(1);
+  });
+
+  it('should warn if devTools() not in middleware', () => {
+    const spy = expect.spyOn(console, 'error');
+    const store = createStore(() => {});
+    const DevTools = createDevTools(React);
+
+    expect(
+      TestUtils.renderIntoDocument,
+    ).withArgs(
+      <DevTools monitor={MockMonitor} store={store} />
+    ).toThrow();
+
+    expect(spy.calls).toContain(
+      /Could not find the devTools store/,
+      (call, errMsg) => call.arguments[0].match(errMsg)
+    );
+
+    spy.restore();
+  });
+});