testing.shouldErrorWithCode() function

testing.shouldErrorWithCode() calls a function that catches any error and checks that the error matches the expected value.

Function type signature

(code: uint, fn: () => A, want: regexp) => stream[{match: bool, code: uint, _diff: string}]

Parameters

fn

(Required) Function to call.

want

(Required) Regular expression to match the expected error.

code

(Required) Which flux error code to expect

Examples

Test die function errors

import "testing"

testing.shouldErrorWithCode(fn: () => die(msg: "error message"), want: /error message/, code: 3)