Salesforce Apex: test that callout hasn't been made -

i want write unit test checks callout hasn't been made trigger.

know how test if callout made correctly - implementing httpcalloutmock:

global class myhttpcalloutmock implements httpcalloutmock {     global httpresponse respond(httprequest req) {         //test httprequest here     } } 

but if no http request made, respond() method won't called. approach doesn't test if request made @ all.

need this:

httprequest.assertnorequestshavebeenmade(); 

how do that?

so figured out. turns out salesforce has methods test.starttest() , test.stoptest() make asynchronous callouts synchronous: https://developer.salesforce.com/docs/atlas.en-us.apexcode.meta/apexcode/apex_testing_tools_start_stop_test.htm

after making callouts synchronous it's easier test them.