test: impove test coverage

[sun0day]

Description

This is a long-term branch. All PRs from this branch intend to increase UT coverage and optimize vueuse source code. I will continuously commit test code to this branch.

All commits in this branch are atomic, feel free to merge PR at any time.@antfu

Updated UT Coverage

api	statements	branches	functions	lines
useColorMode	100% ⬆️	100% ⬆️	100% ⬆️	100% ⬆️
useCached	100%	100%	100% ⬆️	100%
useFocusWithin	100%	100% ⬆️	100%	100%
computedWithControl	100%	100%	100% ⬆️	100%
useStepper	100% ⬆️	100% ⬆️	100%	100% ⬆️
useFetch	100% ⬆️	100% ⬆️	100% ⬆️	100% ⬆️

What is the purpose of this pull request?

• Bug fix
• New Feature
• Documentation update
• Test

Before submitting the PR, please make sure you do the following

• Read the Contributing Guidelines.
• Read the Pull Request Guidelines.
• Check that there isn't already a PR that solves the problem the same way to avoid creating a duplicate.
• Provide a description in this PR that addresses what the PR is solving, or reference the issue that it solves (e.g. fixes #123).
• Ideally, include relevant tests that fail without this PR but pass with it.

[sun0day]

vueuse/packages/core/useFetch/index.ts

Lines 231 to 235 in 56ce7e6

	function useFactoryFetch(url: MaybeComputedRef<string>, ...args: any[]) {
	const computedUrl = computed(() => config.baseUrl
	? joinPaths(resolveUnref(config.baseUrl), resolveUnref(url))
	: resolveUnref(url),
	)

const useMyFetch = createFetch({ baseUrl: 'https://example.com', fetchOptions: {...}})

useMyFetch('test') // request https://example.com/test
useMyFetch('https://a.com/test') // request https://example.com/https://a.com/test

Is it better to support sending the custom request to an absolute URL as axios do? @antfu

[antfu]

Is it better to support sending the custom request to an absolute URL as axios do?

Nice catch, yes that would be nice! 👍

[antfu]

Nice work, thank you! Let's merge it for now, and feel free to open more PRs to continue working on other functions.