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Run tests e2e against an npm pack && npm installed ts-node #1032

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merged 6 commits into from May 11, 2020

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cspotcode
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This is necessary to test that our entrypoints are working correctly with package.json "exports".

This change runs npm pack to create a tarball, then npm installs it into tests/node_modules/

The tests require('ts-node/register') and exec ./node_modules/.bin/ts-node so it matches how a consumer invokes ts-node.

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Coverage Status

Coverage increased (+0.6%) to 81.344% when pulling 95cb9bc on ab/e2e-tests into c1ae9a0 on master.

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coveralls commented May 10, 2020

Coverage Status

Coverage increased (+0.4%) to 81.137% when pulling b56dfde on ab/e2e-tests into a335834 on master.

await execP(`npm install`, { cwd: TEST_DIR })
const packageLockPath = join(TEST_DIR, 'package-lock.json')
existsSync(packageLockPath) && unlinkSync(packageLockPath)
})
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I wonder if these a way to do this outside of the test suite or possibly a separate set of tests? Either way this looks like a great start at coverage.

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I can definitely move the npm pack into our npm build. That would be better since it would npm pack using the same node and npm versions as we use to publish.

Are you thinking you want 2x sets of tests, one unit tests, the other doing these e2e-style tests against an npm install?

I thought about that but I wasn't sure how useful it'd be since the tests mostly look e2e-style already. Your call though, happy to split things out.

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Let's keep it how it is then, I don't have strong opinions either way but it's great to know you thought about this.

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@blakeembrey This is ready for (one more) review. I moved the npm pack into a build step instead of a test step. Installation still happens at test time, in case the goal is to e2e test against an older version of node & npm.

Here are the changes since your last review to make it a little easier.
https://github.com/TypeStrong/ts-node/compare/2869699..b56dfde

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3 participants