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test: add flag scenario in test-fs-write-file-sync

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fs.writeFileSync takes flag param to define the file opening
semantics. Add a scenario that covers flags as well.

PR-URL: https://github.com/nodejs/node/pull/24766
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Anto Aravinth <anto.aravinth.cse@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
This commit is contained in:
Gireesh Punathil 2018-12-01 12:52:25 +05:30 committed by Rich Trott
parent d17d7bdf4e
commit 02cd7069a8
1 changed files with 9 additions and 0 deletions
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9
test/parallel/test-fs-write-file-sync.js
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@ -96,3 +96,12 @@ function closeSync() {
openCount--; openCount--;
return fs._closeSync.apply(fs, arguments); return fs._closeSync.apply(fs, arguments);
} }
// Test writeFileSync with flags
const file4 = path.join(tmpdir.path, 'testWriteFileSyncFlags.txt');
fs.writeFileSync(file4, 'hello ', { encoding: 'utf8', flag: 'a' });
fs.writeFileSync(file4, 'world!', { encoding: 'utf8', flag: 'a' });
content = fs.readFileSync(file4, { encoding: 'utf8' });
assert.strictEqual(content, 'hello world!');