Documentation

testing.shouldError() function

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

Function type signature
(fn: () => A, want: string) => stream[{v: string, _diff: string}]
For more information, see Function type signatures.

Parameters

fn

(Required) Function to call.

want

(Required) Expected error string.

Examples

Test die function errors

import "testing"

testing.shouldError(fn: () => die(msg: "error message"), want: "error message")


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