### Question:
GetBufferedAIDRData implements ServletContextListener { public boolean isChannelPresent(String channel) { Set<String> channelList = cbManager.getActiveChannelsList(); if (channelList != null) { return channelList.contains(channel); } return false; }  @GET @Path("/channels/list") @Produces("text/html") Response getActiveChannelsList(); @GET @Path("/channels/latest") @Produces("application/json") Response getLatestBufferedAIDRData(@QueryParam("callback") String callbackName,
			@DefaultValue("1") @QueryParam("count") Integer count,
			@DefaultValue("0.7") @QueryParam("confidence") Float confidence,
			@DefaultValue("true") @QueryParam("balanced_sampling") Boolean balanced_sampling); @GET @Path("/channel/{crisisCode}") @Produces({"application/json"}) Response getBufferedAIDRData(@PathParam("crisisCode") String channelCode,
			@QueryParam("callback") String callbackName,
			@DefaultValue("1000") @QueryParam("count") int count); @OPTIONS @Produces(MediaType.APPLICATION_JSON) @Path("/channel/filter/{crisisCode}") Response getBufferedAIDRDataPostFilter(@PathParam("crisisCode") String channelCode,
			@QueryParam("callback") String callbackName,
			@DefaultValue("1000") @QueryParam("count") int count); @POST @Consumes(MediaType.APPLICATION_JSON) @Produces(MediaType.APPLICATION_JSON) @Path("/channel/filter/{crisisCode}") Response getBufferedAIDRDataPostFilter(String queryString, @PathParam("crisisCode") String channelCode,
			@QueryParam("callback") String callbackName,
			@DefaultValue("1000") @QueryParam("count") int count); Response returnEmptyJson(final String callbackName); boolean isChannelPresent(String channel); @GET @Path("/channel/error/{crisisCode}") @Produces({"text/html"}) Response onErrorResponse(); @GET @Path("/manage/restart/{passcode}") @Produces("application/json") Response restartFetchService(@PathParam("passcode") String passcode); @POST @Consumes(MediaType.TEXT_PLAIN) @Produces(MediaType.APPLICATION_JSON) @Path("/channel/test/{crisisCode}") Response testPost(String testString, @PathParam("crisisCode") String channelCode); @GET @Path("/channel/test/jsonmap") Response testJsonMap(); @GET @Path("/channel/test/channelpublic") Response testChannelPublicFlag(@QueryParam("channelCode") String channelCode); @Override void contextDestroyed(ServletContextEvent sce); @Override void contextInitialized(ServletContextEvent sce);  }### Answer:
@Test public void isChannelPresentTest() { String channel = "aidr_predict.mock_collection"+new Date(); boolean result = getBufferedAIDRData.isChannelPresent(channel); assertFalse(result); }