wrapper.attributes(attribute) does not return the same thing as wrapper.attributes().attribute

[kb-coder]

Version

1.0.0-beta.24

Reproduction link

https://github.com/kb-coder/vue-test-utils-bug

Steps to reproduce

1. Pull down repro.
2. Run "npm run test:unit"

The two tests in HelloWorld.spec.js will fail.

What is expected?

Both tests should succeed. According to the docs (https://vue-test-utils.vuejs.org/api/wrapper/#attributes-key), I should be able to check the attribute using this syntax:

expect(element.attributes('for'), 'label for attribute').to.equal('myInput')

For example:

it('label for attribute should be "myInput"', mochaAsync(async () => {
    const msg = 'new message'
    const wrapper = await shallowMount(HelloWorld, {
      attachToDocument: true,
      propsData: { msg }
    })

    const element = wrapper.find('label')

    expect(element.attributes('for'), 'label for attribute').to.equal('myInput') // fails
  }))

What is actually happening?

The element.attributes('for') returns the entire element object and not the value of the 'for' attribute.

However, the following line does work:

expect(element.attributes().for, 'label for attribute').to.equal('myInput')

According to the documentation, both ways of getting to the attribute should work.

---

Console shows:

element.attributes('for')
{data-v-.....: "", for: "myInput" .....}

elements.attributes().for
"myInput"

[kb-coder]

I tried this on both an input using the "type" attribute and a label using the "for" attribute. Both are included in the repro.

[38elements]

attributes([key]) is added at #941.
It is 2 days ago.
This is not included in 1.0.0-beta.24.
https://github.com/vuejs/vue-test-utils/releases/tag/v1.0.0-beta.24

[eddyerburgh]

The latest version is released now, so this feature will be working as intended