nitrogen

An interpreted programming language written in Go.

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assert.ni

Utilities for asserting things during testing. If a test passes, nil is returned. Otherwise, a string is returned as an error message.

To use: import 'std/assert'

isTrue(x: bool|fn): nil|string

Check if x is true. If x is a function, it will be executed and its return value checked. isTrue will fail if x, or the return value of x, is not a boolean type.

isFalse(x: bool|fn): nil|string

Check if x is false. If x is a function, it will be executed and its return value checked. isFalse will fail if x, or the return value of x, is not a boolean type.

isEq(a, b: T): nil|string

Check if a and b are equal. isEq will also fail if a and b are not the same type.

isNeq(a, b: T): nil|string

Check if a and b are not equal. isNeq will also fail if a and b are not the same type.

shouldRecover(func: fn): nil|string

Run fn and check if it recovers from an error.

shouldNotRecover(func: fn): nil|string

Run fn and check if it does not recover from an error.