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unit test route reducer

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Original file line number	Diff line number	Diff line change
`@@ -1,5 +1,10 @@`
`1`	`1`	`import{ROUTE_SET}from'./types';`
`2`	`2`
	`3`	`+/**`
	`4`	`+ * Sets a route`
	`5`	`+ *@param {string} route route name`
	`6`	`+ *@returns thunk`
	`7`	`+ */`
`3`	`8`	`exportfunctionrouteSet(route:string):Redux.ThunkAction<any,any,{}>{`
`4`	`9`	`return(dispatch,getState)=>{`
`5`	`10`	`if(getState().route!==route){`

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Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,20 @@`
	`1`	`+importroutefrom'./reducer';`
	`2`	`+`
	`3`	`+describe('route reducer',()=>{`
	`4`	`+`
	`5`	`+it('should set the initial route to "start"',()=>{`
	`6`	`+constaction={type:'unknown'};`
	`7`	`+expect(route(undefined,action)).toBe('start');`
	`8`	`+});`
	`9`	`+`
	`10`	`+it('should trigger route changes on ROUTE_SET',()=>{`
	`11`	`+constaction={type:'ROUTE_SET',payload:{route:'next'}};`
	`12`	`+expect(route(undefined,action)).toBe('next');`
	`13`	`+});`
	`14`	`+`
	`15`	`+it('maintains existing route if no change',()=>{`
	`16`	`+constaction={type:'unknown'};`
	`17`	`+expect(route('current',action)).toBe('current');`
	`18`	`+});`
	`19`	`+`
	`20`	`+});`

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Original file line number	Diff line number	Diff line change
`@@ -2,6 +2,12 @@ import {ROUTE_SET} from './types';`
`2`	`2`
`3`	`3`	`const_route='start';`
`4`	`4`
	`5`	`+/**`
	`6`	`+ * Sets the route name`
	`7`	`+ *@param {} route=_route route name`
	`8`	`+ *@param {Action} action redux action`
	`9`	`+ *@returns string route name`
	`10`	`+ */`
`5`	`11`	`exportdefaultfunctionrouteReducer(`
`6`	`12`	`route=_route,action:Action`
`7`	`13`	`):string{`

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