javascript - Jasmine test for Knockoutjs -


how test (using jasmine) if pre defined function such compute or subscribe called when observable variables change in knockoutjs

for example: 

self.report.subscribe(function(){     clearall(); });

if change value of report observable clearall function called subscribe function not executing expected

thanks in advance.

you can use spyon method. syntax:

spyon(myobject, 'nameofmethodtospyon'); //do stuff expect(moobject.nameofthemethodtospyon).tohavebeencalled();

example:

spyon(window, 'alert'); alert('hi'); expect(window.alert).tohavebeencalledwith('hi');

so like:

spyon(mymodel, 'clearall'); mymodel.report('something'); expect(mymodel.clearall).tohavebeencalled();

reference: http://jasmine.github.io/2.0/introduction.html#section-spies

you should test own code. subscribe function part of knockoutjs , doesn't need more testing.


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