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fs: fix options.end of fs.ReadStream() #18121

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fs: fix options.end of fs.ReadStream() #18121

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036b29b
fs: fix options.end of fs.ReadStream()
Jan 12, 2018
1981fbf
fs: fix options.end of fs.ReadStream()
Jan 13, 2018
609404f
Modify code style of the test
Jan 13, 2018
3723635
Move the test cast to test-fs-read-stream.js
Jan 14, 2018
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3 changes: 2 additions & 1 deletion lib/fs.js
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Original file line number Diff line number Diff line change
Expand Up @@ -2236,7 +2236,8 @@ function ReadStream(path, options) {
this.flags = options.flags === undefined ? 'r' : options.flags;
this.mode = options.mode === undefined ? 0o666 : options.mode;

this.start = options.start;
this.start = typeof this.fd !== 'number' && options.start === undefined ?
0 : options.start;
this.end = options.end;
this.autoClose = options.autoClose === undefined ? true : options.autoClose;
this.pos = undefined;
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15 changes: 14 additions & 1 deletion test/sequential/test-stream2-fs.js
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Expand Up @@ -20,7 +20,7 @@
// USE OR OTHER DEALINGS IN THE SOFTWARE.

'use strict';
require('../common');
const common = require('../common');
const fixtures = require('../common/fixtures');
const assert = require('assert');

Expand Down Expand Up @@ -68,3 +68,16 @@ w.on('results', function(res) {
});

r.pipe(w);

{
// Verify that end works when start is not specified.
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The test file here is named test-stream2-fs and it's in sequential. I think the test case added here belongs to test/parallel/test-fs-read-stream.js since it's more of a fs test, not a stream2 test. (Also I think this file can be moved to parallel? Although that should be done in another PR).

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ok. I just moved the new test case to test/parallel/test-fs-read-stream.js.

const end = 3;
const r = new FSReadable(file, { end });
const w = new TestWriter();

w.on('results', common.mustCall((res) => {
assert.strictEqual(w.length, end + 1);
}));

r.pipe(w);
}