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test: improve test coverage in child_process #26282

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test: improve test coverage in child_process #26282

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20 changes: 16 additions & 4 deletions test/parallel/test-child-process-validate-stdio.js
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Original file line number Diff line number Diff line change
Expand Up @@ -5,14 +5,13 @@ const common = require('../common');
const assert = require('assert');
const getValidStdio = require('internal/child_process').getValidStdio;

const expectedError =
common.expectsError({ code: 'ERR_INVALID_OPT_VALUE', type: TypeError }, 2);
const expectedError = { code: 'ERR_INVALID_OPT_VALUE', type: TypeError };

// Should throw if string and not ignore, pipe, or inherit
assert.throws(() => getValidStdio('foo'), expectedError);
common.expectsError(() => getValidStdio('foo'), expectedError);
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@Trott Trott Dec 17, 2019 •
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Can you please leave it as assert.throws() here and elsewhere? Better to use the public assert than our core-only common if there's no difference.

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Oh, I see, this just moves the expectsError, rather than introducing it. Never mind my comment. Should eventually be removed anyway but not necessarily in this PF and it probably needs to wait for Node.js 8 to EOL.


// Should throw if not a string or array
assert.throws(() => getValidStdio(600), expectedError);
common.expectsError(() => getValidStdio(600), expectedError);

// Should populate stdio with undefined if len < 3
{
Expand All @@ -30,6 +29,19 @@ common.expectsError(() => getValidStdio(stdio2, true),
{ code: 'ERR_IPC_SYNC_FORK', type: Error }
);

// Should throw if stdio is not a valid input
{
const stdio = ['foo'];
common.expectsError(() => getValidStdio(stdio, false),
{ code: 'ERR_INVALID_SYNC_FORK_INPUT', type: TypeError }
);
}

// Should throw if stdio is not a valid option
{
const stdio = [{ foo: 'bar' }];
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I think it would be better if we can collect all invalid options which both throw expectedError here(for reduce duplicated code).

Things like:

['foo', 600, [{ foo: 'bar' }]].forEach((stdio) => {
  common.expectsError(() => _validateStdio(stdio), expectedError);
})

But it shouldn't block this :)

common.expectsError(() => getValidStdio(stdio), expectedError);
}

if (common.isMainThread) {
const stdio3 = [process.stdin, process.stdout, process.stderr];
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