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👩🏫 toBeTruthy and toBeFalsy
Tell the truthy, or at least don't falsy.
These comparisons are used to determine if a value is truthy or falsy in the JavaScript sense. In JavaScript there are only six falsy values:
false0""nullundefinedNaN
In AssemblyScript, there is no
undefined, so as-pect will treat each of those values as falsy. Truthy values are anything that is not falsy,// true is truthy!
expect(true).toBeTruthy();
// a reference is always truthy, unless it's null
expect(new Vec3(1, 2, 3)).toBeTruthy();
// 1 is truthy
expect(1).toBeTruthy();
// strings with values are always truthy
expect("Something!").toBeTruthy();
// false is falsy
expect(false).toBeFalsy();
// null is falsy
expect<Vec3 | null>(null).toBeFalsy();
// 0 is falsy
expect(0).toBeFalsy();
// NaN is always falsy
expect(NaN).toBeFalsy();
// empty strings are falsy
expect("").toBeFalsy();
These methods are safe to use with
jest.Last modified 3yr ago