Context not specified when testing

[jakemmarsh]

I'm using Gulp and Karma to test my React application. I'm trying to render a single document with TestUtils.renderIntoDocument, which is working correctly. However, the component uses the Navigation mixin, and also has <Link /> components. That's resulting in these warnings/errors, and causing the test(s) to fail:

Chrome 38.0.2125 (Mac OS X 10.10.0): Executed 0 of 1 SUCCESS (0 secs / 0 secWARN: 'Warning: Required context `makePath` was not specified in `Header`.'
Chrome 38.0.2125 (Mac OS X 10.10.0): Executed 0 of 1 SUCCESS (0 secs / 0 secWARN: 'Warning: Required context `makeHref` was not specified in `Header`.'
Chrome 38.0.2125 (Mac OS X 10.10.0): Executed 0 of 1 SUCCESS (0 secs / 0 secWARN: 'Warning: Required context `transitionTo` was not specified in `Header`.'
Chrome 38.0.2125 (Mac OS X 10.10.0): Executed 0 of 1 SUCCESS (0 secs / 0 secWARN: 'Warning: Required context `replaceWith` was not specified in `Header`.'
Chrome 38.0.2125 (Mac OS X 10.10.0): Executed 0 of 1 SUCCESS (0 secs / 0 secWARN: 'Warning: Required context `goBack` was not specified in `Header`.'
Chrome 38.0.2125 (Mac OS X 10.10.0): Executed 0 of 1 SUCCESS (0 secs / 0 secWARN: 'Warning: Required context `activeRoutes` was not specified in `Link`. Check the render method of `Header`.'
Chrome 38.0.2125 (Mac OS X 10.10.0): Executed 0 of 1 SUCCESS (0 secs / 0 secWARN: 'Warning: Required context `activeParams` was not specified in `Link`. Check the render method of `Header`.'
Chrome 38.0.2125 (Mac OS X 10.10.0): Executed 0 of 1 SUCCESS (0 secs / 0 secWARN: 'Warning: Required context `activeQuery` was not specified in `Link`. Check the render method of `Header`.'
Chrome 38.0.2125 (Mac OS X 10.10.0): Executed 0 of 1 SUCCESS (0 secs / 0 secWARN: 'Warning: Required context `isActive` was not specified in `Link`. Check the render method of `Header`.'
Chrome 38.0.2125 (Mac OS X 10.10.0): Executed 0 of 1 SUCCESS (0 secs / 0 secWARN: 'Warning: Required context `makePath` was not specified in `Link`. Check the render method of `Header`.'
Chrome 38.0.2125 (Mac OS X 10.10.0): Executed 0 of 1 SUCCESS (0 secs / 0 secWARN: 'Warning: Required context `makeHref` was not specified in `Link`. Check the render method of `Header`.'
Chrome 38.0.2125 (Mac OS X 10.10.0): Executed 0 of 1 SUCCESS (0 secs / 0 secWARN: 'Warning: Required context `transitionTo` was not specified in `Link`. Check the render method of `Header`.'
Chrome 38.0.2125 (Mac OS X 10.10.0): Executed 0 of 1 SUCCESS (0 secs / 0 secWARN: 'Warning: Required context `replaceWith` was not specified in `Link`. Check the render method of `Header`.'
Chrome 38.0.2125 (Mac OS X 10.10.0): Executed 0 of 1 SUCCESS (0 secs / 0 secWARN: 'Warning: Required context `goBack` was not specified in `Link`. Check the render method of `Header`.'
Chrome 38.0.2125 (Mac OS X 10.10.0): Executed 0 of 1 SUCCESS (0 secs / 0 secChrome 38.0.2125 (Mac OS X 10.10.0) Header should exist FAILED
    TypeError: undefined is not a function
        at Navigation.makeHref (/var/folders/dm/qhnpyjhj6ns3t89mpn3k0vc00000gn/T/0bf548d74daf62445f8b08e0939f0e219c961095.browserify:22367:25 <- node_modules/react-router/modules/mixins/Navigation.js:29:0)
        at React.createClass.getHref (/var/folders/dm/qhnpyjhj6ns3t89mpn3k0vc00000gn/T/0bf548d74daf62445f8b08e0939f0e219c961095.browserify:21111:17 <- node_modules/react-router/modules/components/Link.js:76:0)
        at React.createClass.render (/var/folders/dm/qhnpyjhj6ns3t89mpn3k0vc00000gn/T/0bf548d74daf62445f8b08e0939f0e219c961095.browserify:21132:18 <- node_modules/react-router/modules/components/Link.js:97:0)
        at null.<anonymous> (/var/folders/dm/qhnpyjhj6ns3t89mpn3k0vc00000gn/T/0bf548d74daf62445f8b08e0939f0e219c961095.browserify:31608:34 <- node_modules/react/lib/ReactCompositeComponent.js:1261:0)
        at wrapper [as _renderValidatedComponent] (/var/folders/dm/qhnpyjhj6ns3t89mpn3k0vc00000gn/T/0bf548d74daf62445f8b08e0939f0e219c961095.browserify:37510:21 <- node_modules/react/lib/ReactPerf.js:51:0)
        at null.<anonymous> (/var/folders/dm/qhnpyjhj6ns3t89mpn3k0vc00000gn/T/0bf548d74daf62445f8b08e0939f0e219c961095.browserify:31150:14 <- node_modules/react/lib/ReactCompositeComponent.js:803:0)
        at wrapper [as mountComponent] (/var/folders/dm/qhnpyjhj6ns3t89mpn3k0vc00000gn/T/0bf548d74daf62445f8b08e0939f0e219c961095.browserify:37510:21 <- node_modules/react/lib/ReactPerf.js:51:0)
        at ReactDOMComponent.ReactMultiChild.Mixin.mountChildren (/var/folders/dm/qhnpyjhj6ns3t89mpn3k0vc00000gn/T/0bf548d74daf62445f8b08e0939f0e219c961095.browserify:36964:42 <- node_modules/react/lib/ReactMultiChild.js:195:0)
        at ReactDOMComponent.Mixin._createContentMarkup (/var/folders/dm/qhnpyjhj6ns3t89mpn3k0vc00000gn/T/0bf548d74daf62445f8b08e0939f0e219c961095.browserify:32392:32 <- node_modules/react/lib/ReactDOMComponent.js:261:0)
        at ReactDOMComponent.<anonymous> (/var/folders/dm/qhnpyjhj6ns3t89mpn3k0vc00000gn/T/0bf548d74daf62445f8b08e0939f0e219c961095.browserify:32314:14 <- node_modules/react/lib/ReactDOMComponent.js:183:0)

[ryanflorence]

#437