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var Readable = require('../lib/lazystream').Readable;
var DummyReadable = require('./helper').DummyReadable;
exports.readable = {
dummy: function(test) {
var expected = [ 'line1\n', 'line2\n' ];
var actual = [];
test.expect(1);
new DummyReadable([].concat(expected))
.on('data', function(chunk) {
actual.push(chunk.toString());
})
.on('end', function() {
test.equal(actual.join(''), expected.join(''), 'DummyReadable should produce the data it was created with');
test.done();
});
},
options: function(test) {
test.expect(3);
var readable = new Readable(function(options) {
test.ok(this instanceof Readable, "Readable should bind itself to callback's this");
test.equal(options.encoding, "utf-8", "Readable should make options accessible to callback");
this.ok = true;
return new DummyReadable(["test"]);
}, {encoding: "utf-8"});
readable.read(4);
test.ok(readable.ok);
test.done();
},
streams2: function(test) {
var expected = [ 'line1\n', 'line2\n' ];
var actual = [];
var instantiated = false;
test.expect(2);
var readable = new Readable(function() {
instantiated = true;
return new DummyReadable([].concat(expected));
});
test.equal(instantiated, false, 'DummyReadable should only be instantiated when it is needed');
readable.on('readable', function() {
var chunk;
while ((chunk = readable.read())) {
actual.push(chunk.toString());
}
});
readable.on('end', function() {
test.equal(actual.join(''), expected.join(''), 'Readable should not change the data of the underlying stream');
test.done();
});
readable.read(0);
},
resume: function(test) {
var expected = [ 'line1\n', 'line2\n' ];
var actual = [];
var instantiated = false;
test.expect(2);
var readable = new Readable(function() {
instantiated = true;
return new DummyReadable([].concat(expected));
});
readable.pause();
readable.on('data', function(chunk) {
actual.push(chunk.toString());
});
readable.on('end', function() {
test.equal(actual.join(''), expected.join(''), 'Readable should not change the data of the underlying stream');
test.done();
});
test.equal(instantiated, false, 'DummyReadable should only be instantiated when it is needed');
readable.resume();
}
};