angular - Using Jasmine with Ionic is there a way to mock/stub a static namespace function call? -


i'm new space bear me. working in ionic 2 project using angular 2, typescript, , jasmine unit testing. i'm trying write unit test right weird case. have third-party library import in component import @ top import * thirdparty "thirdparty-library" , later component makes call thirdparty.setup(somestuff, somemorestuff, anotherfunc).

really want have mock thirdparty own fake anotherfuncthat pass unit test. there way pass in constructor , have override thirdparty namespace? thank in advance

functions being first class citizens, can assigned new values. if want, can like

let ogfunct;  beforeeach(() => {   ogfunt = thirdparty.setup;   thirdparty.setup = (arg1, arg2, arg3) => {     console.log(`arg1 - arg2 - arg2`)   } });  aftereach(() => {   thirdparty.setup = ogfunct; });

sometimes library type definitions make function read-only. in case, can't assign anything. maybe in case better option abstract third-party calls service. , mock service. might consider doing anyway. think better design using third-party directly in component.


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