Tiny Assert

TinyAssert is simple and lightweight assertion library.

API

assert.ok()

(value:Boolean, msg?:String) -> void

Throw if value is not truly. Using msg as assertion error message.

value == true

assert.notOk()

(value:Boolean, msg?:String) -> void

Throw if value is truthy. Using msg as assertion error message text.

value != true

Check if a non-strictly doesn't equal b.

assert.equal()

(a:*, b:*, msg?:String) -> void

Check if a strictly equals b.

a === b

assert.notEqual()

(a:*, b:*[, msg:String]) -> void

Check if a doesn't strictly equal b.

a !== b

assert.oneOf()

(a:*, b:Array<*>, msg?:String) -> void

Check if a is presented in a list b.

b.indexOf(a) > -1

assert.notOneOf()

(a:*, b:Array<*>, msg?:String) -> void

Check if a isn't presented in list b

b.indexOf(a) < 0

assert.match()

(a:*, b:Object, msg?:String) -> void

Check if properties of b be strictly equal to properties of a.

a[k] === b[k]

assert.notMatch()

(a:*, b:Object, msg?:String) -> void

Check if properties of b be strictly equal to properties of a.

a[k] !== b[k]

assert.fail()

(msg:String) -> void

Throws assert exception with msg as a text.

assert.throws()

(fn:() -> *, error: String|Error|Object, msg?:String) -> void

Check if function throws an assertion of defined shape. If error is a string, then error.toString() value will be compared against the string. If it's an Error constructor, then instanceof check will be performed. If it's an Object, then each property of error will be checked to equality to actual error properties.

assert.doesNotThrow()

(fn:() -> *, error: String|Error|Object, msg?:String) -> void

Performs the same checks as assert.throws but expects all comparisons to return false.

assert.rejects()

(fn:() -> Promise<*,Error>, error: String|Error|Object, msg?:String) -> void

Same as assert.throws but for promises.

assert.doesNotReject()

(fn:() -> Promise<*,Error>, error: String|Error|Object, msg?:String) -> void

Same as assert.doesNotThrow but for promises.

License

MIT © Rumkin