Expect not toThrow function with arguments - Jasmine

Question

I have function that gets 3 arguments. I want to check that this function not throwing an error. I did something like this:

expect(myFunc).not.toThrow();

The problem is myFunc need to get arguments. How can I send the arguments?

P.S I tried to pass it argument but I got error that myFunc(arg1, arg2, arg3) is not a function.

Solution 1

toThrow matcher requires function to be passed as argument to expect so you can simply wrap your function call in anonymous function:

expect(function() {
    myFunc(arg1, arg2, arg3);
}).not.toThrow();

You can also use bind to create new 'version' of your function that when called will be passed provided arguments:

expect(myFunc.bind(null, arg1, arg2, arg3)).not.toThrow();

Solution 2

You can use the .not method:

expect(() => actionToCheck).not.toThrow()

https://jestjs.io/docs/expect#not

Comments

[Sagie]

Thanks that what I looked for!

[ccheney]

or with an arrow function: expect(() => myFunc(arg1, arg2, arg3)).not.toThrow();