👩‍🏫 toBeTruthy and toBeFalsy

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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:
false
0
""
null
undefined
NaN
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,
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// true is truthy!
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expect(true).toBeTruthy();
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​
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// a reference is always truthy, unless it's null
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expect(new Vec3(1, 2, 3)).toBeTruthy();
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​
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// 1 is truthy
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expect(1).toBeTruthy();
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​
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// strings with values are always truthy
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expect("Something!").toBeTruthy();
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​
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// false is falsy
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expect(false).toBeFalsy();
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​
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// null is falsy
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expect<Vec3 | null>(null).toBeFalsy();
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​
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// 0 is falsy
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expect(0).toBeFalsy();
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​
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// NaN is always falsy
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expect(NaN).toBeFalsy();
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​
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// empty strings are falsy
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expect("").toBeFalsy();
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These methods are safe to use with jest.

toBlockEqual

toBeNaN

Last modified 2yr ago

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