errors and warnings / stdlib / E8123

E8123 error

mock.module replaces an export the module does not have

area: stdlib (x8xxx)
fails the build: yes

mock.module replaces an export that the module doesn't have. The replacement table is checked against the module's exports: a name the module doesn't export is E8123, and a replacement of the wrong type is a type error. Usually the name is misspelled, or the export was renamed.

Example

× failssrc/clock.wowluawowlua

export function now(): number    return GetTime()end

tests/clock.test.wowluawowlua

import test, expect from "wowlua:test"import * as mock from "wowlua:mock"import * as clock from "/clock" mock.module(clock, { today = function(): number return 0 end }) @test("reads the clock")local function reads()    expect(clock.now()).toBe(0)end

✓ compilessrc/clock.wowluawowlua

export function now(): number    return GetTime()end

tests/clock.test.wowluawowlua

import test, expect from "wowlua:test"import * as mock from "wowlua:mock"import * as clock from "/clock" mock.module(clock, { now = function(): number return 0 end }) @test("reads the clock")local function reads()    expect(clock.now()).toBe(0)end

The compiler reports it like this:

error[E8123]: the module has no export `today`
  ┌─ tests/clock.test.wowlua:5:22
  │
5 │ mock.module(clock, { today = function(): number return 0 end })
  │                      ^^^^^ here

code	message
E8119	`import internal` outside a test file

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terminal

$ wowlua explain E8123
E8123 (error): mock.module replaces an export the module does not have

source on GitHub ↗

Example

Related codes

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