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@ -24,22 +24,26 @@ var assert = require('assert'); |
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var Readable = require('stream').Readable; |
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var r = new Readable(); |
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test1(); |
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test2(); |
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// should not end when we get a Buffer(0) or '' as the _read result
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// that just means that there is *temporarily* no data, but to go
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// ahead and try again later.
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//
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// note that this is very unusual. it only works for crypto streams
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// because the other side of the stream will call read(0) to cycle
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// data through openssl. that's why we set the timeouts to call
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// r.read(0) again later, otherwise there is no more work being done
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// and the process just exits.
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function test1() { |
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var r = new Readable(); |
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// should not end when we get a Buffer(0) or '' as the _read result
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// that just means that there is *temporarily* no data, but to go
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// ahead and try again later.
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//
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// note that this is very unusual. it only works for crypto streams
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// because the other side of the stream will call read(0) to cycle
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// data through openssl. that's why we set the timeouts to call
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// r.read(0) again later, otherwise there is no more work being done
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// and the process just exits.
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var buf = new Buffer(5); |
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buf.fill('x'); |
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var reads = 5; |
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r._read = function(n, cb) { |
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var buf = new Buffer(5); |
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buf.fill('x'); |
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var reads = 5; |
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r._read = function(n, cb) { |
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switch (reads--) { |
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case 0: |
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return cb(null, null); // EOF
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@ -65,21 +69,50 @@ r._read = function(n, cb) { |
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default: |
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throw new Error('unreachable'); |
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} |
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}; |
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}; |
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var results = []; |
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function flow() { |
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var results = []; |
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function flow() { |
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var chunk; |
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while (null !== (chunk = r.read())) |
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results.push(chunk + ''); |
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} |
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r.on('readable', flow); |
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r.on('end', function() { |
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} |
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r.on('readable', flow); |
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r.on('end', function() { |
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results.push('EOF'); |
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}); |
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flow(); |
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}); |
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flow(); |
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process.on('exit', function() { |
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process.on('exit', function() { |
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assert.deepEqual(results, [ 'xxxxx', 'xxxxx', 'EOF' ]); |
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console.log('ok'); |
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}); |
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}); |
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} |
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function test2() { |
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var r = new Readable({ encoding: 'base64' }); |
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var reads = 5; |
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r._read = function(n, cb) { |
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if (!reads--) |
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return cb(null, null); // EOF
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else |
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return cb(null, new Buffer('x')); |
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}; |
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var results = []; |
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function flow() { |
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var chunk; |
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while (null !== (chunk = r.read())) |
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results.push(chunk + ''); |
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} |
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r.on('readable', flow); |
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r.on('end', function() { |
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results.push('EOF'); |
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}); |
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flow(); |
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process.on('exit', function() { |
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assert.deepEqual(results, [ 'eHh4', 'eHg=', 'EOF' ]); |
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console.log('ok'); |
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}); |
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} |
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