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test: fix writefile with fd #38820

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test: fix writefile with fd #38820

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23bae8a
test: fix writefile with fd
Linkgoron May 26, 2021
280e745
fixup! test: fix writefile with fd
Linkgoron May 26, 2021
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fixup! test: fix writefile with fd
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@Linkgoron
Linkgoron committed May 26, 2021
commit 280e74593c34c6019e0856d552419c0c99fc8af4
42 changes: 22 additions & 20 deletions test/parallel/test-fs-writefile-with-fd.js
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Original file line number Diff line number Diff line change
Expand Up @@ -12,26 +12,38 @@ const join = require('path').join;
const tmpdir = require('../common/tmpdir');
tmpdir.refresh();

const fdsToCloseOnExit = [];
{
/* writeFileSync() test. */
const filename = join(tmpdir.path, 'test.txt');

/* Open the file descriptor. */
const fd = fs.openSync(filename, 'w');
fdsToCloseOnExit.push(fd);

/* Write only five characters, so that the position moves to five. */
assert.deepStrictEqual(fs.writeSync(fd, 'Hello'), 5);
assert.deepStrictEqual(fs.readFileSync(filename).toString(), 'Hello');
try {
/* Write only five characters, so that the position moves to five. */
assert.deepStrictEqual(fs.writeSync(fd, 'Hello'), 5);
assert.deepStrictEqual(fs.readFileSync(filename).toString(), 'Hello');

/* Write some more with writeFileSync(). */
fs.writeFileSync(fd, 'World');
/* Write some more with writeFileSync(). */
fs.writeFileSync(fd, 'World');

/* New content should be written at position five, instead of zero. */
assert.deepStrictEqual(fs.readFileSync(filename).toString(), 'HelloWorld');
/* New content should be written at position five, instead of zero. */
assert.deepStrictEqual(fs.readFileSync(filename).toString(), 'HelloWorld');
} finally {
fs.closeSync(fd);
}
}

const fdsToCloseOnExit = [];
process.on('beforeExit', common.mustCall(() => {
for (const fd of fdsToCloseOnExit) {
try {
fs.closeSync(fd);
} catch {
// Failed to close, ignore
}
}
}));

{
/* writeFile() test. */
const file = join(tmpdir.path, 'test1.txt');
Expand Down Expand Up @@ -82,13 +94,3 @@ const fdsToCloseOnExit = [];

controller.abort();
}

process.on('beforeExit', () => {
for (const fd of fdsToCloseOnExit) {
try {
fs.closeSync(fd);
} catch {
// Failed to close, ignore
}
}
});