test: improve node/build.ts ut coverage

[sun0day]

Description

improve node/build.ts ut coverage

• statements 48.32% ⬆️
• branches 74.35% ⬆️
• functions 26.82% ⬆️
• lines 48.32% ⬆️

Additional context

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What is the purpose of this pull request?

• Bug fix
• New Feature
• Documentation update
• Other

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

• Read the Contributing Guidelines.
• Read the Pull Request Guidelines and follow the Commit Convention.
• 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]

can you help review this PR at your convenience @patak-dev? Thx.

[patak-dev]

Looks good to me @sun0day. Just in case, full coverage on unit tests isn't a goal currently as our main tests are focused on the e2e playgrounds. Where it makes sense, I think it is good to have though.

[sun0day]

Looks good to me @sun0day. Just in case, full coverage on unit tests isn't a goal currently as our main tests are focused on the e2e playgrounds. Where it makes sense, I think it is good to have though.

got it

[bluwy]

Looks like #9886 recently merged which added new unit tests too and causing merge conflicts.

[sun0day]

Looks like #9886 recently merged which added new unit tests too and causing merge conflicts.

Resolved. Test serve CI step is unstable in node16&windows-latest. :(