test: add test coverage for fs.truncate #23620

christian-bromann · 2018-10-12T19:05:44Z

Add test to check:

for null as len parameter
if error is propagated into callback if file doesn't exist
if an error is actually thrown if len is not a number

I think it is safe to say that we could remove:

  } else if (len === undefined) {
    len = 0;
  }

because there is an validateInteger(len, 'len'); right after. Another option would be to just set len to 0 for all cases it is not a Number. What do you think?

Checklist

make -j4 test (UNIX), or vcbuild test (Windows) passes
tests and/or benchmarks are included
commit message follows commit guidelines

refack · 2018-10-12T19:08:23Z

Hello @christian-bromann and thank you for the contribution 🥇

refack · 2018-10-12T19:14:06Z

the following:

node/lib/fs.js

Lines 617 to 622 in bcbb937

    
           if (typeof len === 'function') { 
        
             callback = len; 
        
             len = 0; 
        
           } else if (len === undefined) { 
        
             len = 0; 
        
           }

Is a sort of JS idiom to handle optional function arguments. IMHO it could stay as as.

trivikr · 2018-10-13T03:33:33Z

CI (pending): https://ci.nodejs.org/job/node-test-pull-request/17796/

thefourtheye · 2018-10-13T09:10:54Z

test/parallel/test-fs-truncate.js

+{
+  const file8 = path.resolve(tmp, 'truncate-file-8.txt');
+  fs.truncate(file8, 0, common.mustCall(function(err) {
+    assert.ok(err);


If we are expecting an error, its bettor to explicitly assert the error. But, I think you meant to write assert.ifError here.

Since this passes CI, I'm assuming it fails with code ENOENT.
Assertion should have been near

node/test/parallel/test-fs-error-messages.js

Lines 521 to 545 in 9f7e3a4

// ftruncate

{

const validateError = (err) => {

assert.strictEqual(err.syscall, 'ftruncate');

// Could be EBADF or EINVAL, depending on the platform

if (err.code === 'EBADF') {

assert.strictEqual(err.message, 'EBADF: bad file descriptor, ftruncate');

assert.strictEqual(err.errno, UV_EBADF);

} else {

assert.strictEqual(err.message, 'EINVAL: invalid argument, ftruncate');

assert.strictEqual(err.errno, UV_EINVAL);

assert.strictEqual(err.code, 'EINVAL');

}

return true;

};

common.runWithInvalidFD((fd) => {

fs.ftruncate(fd, 4, common.mustCall(validateError));

assert.throws(

() => fs.ftruncateSync(fd, 4),

validateError

);

});

}

But since it's not, I agree it should be here.

christian-bromann · 2018-10-15T16:58:03Z

@thefourtheye added explicit check for error

refack · 2018-10-15T17:12:47Z

CI: https://ci.nodejs.org/job/node-test-pull-request/17871/

lundibundi · 2018-10-15T17:11:45Z

test/parallel/test-fs-truncate.js

+}
+
+{
+  const file8 = path.resolve(tmp, 'truncate-file-8.txt');


Nit: maybe use some more descriptive filename that will indicate that this file is indeed non-existent and make sure that nobody creates it accidentally (via other test), perhaps: 'non-existent-truncate-file.txt'?

thefourtheye · 2018-10-15T17:54:18Z

test/parallel/test-fs-truncate.js

+      code: 'ERR_INVALID_ARG_TYPE',
+      name: 'TypeError [ERR_INVALID_ARG_TYPE]',
+      message: 'The "len" argument must be of type number. ' +
+                `Received type ${typeof input}`


Nit: this line should be aligned to the '

christian-bromann · 2018-10-15T21:23:24Z

It says Missing subsystem. which is odd because I started the commit with test:...

addaleax · 2018-10-15T21:26:43Z

/cc @Trott

@christian-bromann It’s not the first time that that happened, but I think we thought we had fixed it. I don’t think you need to do anything here, though.

CI: https://ci.nodejs.org/job/node-test-pull-request/17877/

christian-bromann · 2018-10-15T22:31:47Z

Maybe to add context to this situation: I used git commit --amend for all changes that happen after I made the initial PR

Add test to check: - for `null` as len parameter - if error is propagated into callback if file doesn't exist - if an error is actually thrown if len is not a number PR-URL: nodejs#23620 Reviewed-By: Refael Ackermann <[email protected]> Reviewed-By: Ruben Bridgewater <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Trivikram Kamat <[email protected]> Reviewed-By: Gireesh Punathil <[email protected]> Reviewed-By: Sakthipriyan Vairamani <[email protected]> Reviewed-By: Denys Otrishko <[email protected]>

refack · 2018-10-15T23:03:01Z

Landed in 74f854e 🎉
Congratulations @christian-bromann on GitHub promoting you form

to

Hope we see you contributing more in the future 😉

christian-bromann · 2018-10-15T23:07:03Z

Hope we see you contributing more in the future 😉

Will try my best. Thanks for the support. I really enjoyed the code and learn session at Node+JS Interactive.

Add test to check: - for `null` as len parameter - if error is propagated into callback if file doesn't exist - if an error is actually thrown if len is not a number PR-URL: #23620 Reviewed-By: Refael Ackermann <[email protected]> Reviewed-By: Ruben Bridgewater <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Trivikram Kamat <[email protected]> Reviewed-By: Gireesh Punathil <[email protected]> Reviewed-By: Sakthipriyan Vairamani <[email protected]> Reviewed-By: Denys Otrishko <[email protected]>

nodejs-github-bot added the test Issues and PRs related to the tests. label Oct 12, 2018

refack approved these changes Oct 12, 2018

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refack added the fs Issues and PRs related to the fs subsystem / file system. label Oct 12, 2018

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christian-bromann force-pushed the truncate-test-coverage branch from 13a578a to 7299332 Compare October 15, 2018 16:57

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christian-bromann force-pushed the truncate-test-coverage branch from 7299332 to 2a1b66d Compare October 15, 2018 18:48

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refack force-pushed the truncate-test-coverage branch from 2a1b66d to 106a6ed Compare October 15, 2018 22:58

refack force-pushed the truncate-test-coverage branch from 106a6ed to 74f854e Compare October 15, 2018 22:59

refack merged commit 74f854e into nodejs:master Oct 15, 2018

christian-bromann deleted the truncate-test-coverage branch October 15, 2018 23:05

codebytere mentioned this pull request Nov 27, 2018

v10.13.1 proposal #24675

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codebytere mentioned this pull request Nov 29, 2018

v10.14.2 proposal #24727

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test: add test coverage for fs.truncate #23620

test: add test coverage for fs.truncate #23620

christian-bromann commented Oct 12, 2018 •

edited

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refack commented Oct 12, 2018

refack commented Oct 12, 2018

trivikr commented Oct 13, 2018

thefourtheye Oct 13, 2018

refack Oct 13, 2018

christian-bromann commented Oct 15, 2018

refack commented Oct 15, 2018

lundibundi Oct 15, 2018

thefourtheye Oct 15, 2018

christian-bromann commented Oct 15, 2018

addaleax commented Oct 15, 2018

christian-bromann commented Oct 15, 2018

refack commented Oct 15, 2018

christian-bromann commented Oct 15, 2018

	// ftruncate
	{
	const validateError = (err) => {
	assert.strictEqual(err.syscall, 'ftruncate');
	// Could be EBADF or EINVAL, depending on the platform
	if (err.code === 'EBADF') {
	assert.strictEqual(err.message, 'EBADF: bad file descriptor, ftruncate');
	assert.strictEqual(err.errno, UV_EBADF);
	} else {
	assert.strictEqual(err.message, 'EINVAL: invalid argument, ftruncate');
	assert.strictEqual(err.errno, UV_EINVAL);
	assert.strictEqual(err.code, 'EINVAL');
	}
	return true;
	};

	common.runWithInvalidFD((fd) => {
	fs.ftruncate(fd, 4, common.mustCall(validateError));

	assert.throws(
	() => fs.ftruncateSync(fd, 4),
	validateError
	);
	});
	}

test: add test coverage for fs.truncate #23620

test: add test coverage for fs.truncate #23620

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christian-bromann commented Oct 12, 2018 • edited Loading

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christian-bromann commented Oct 12, 2018 •

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