60 lines
1.5 KiB
JavaScript
60 lines
1.5 KiB
JavaScript
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var Writable = require('../lib/lazystream').Writable;
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var DummyWritable = require('./helper').DummyWritable;
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exports.writable = {
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options: function(test) {
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test.expect(3);
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var writable = new Writable(function(options) {
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test.ok(this instanceof Writable, "Writable should bind itself to callback's this");
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test.equal(options.encoding, "utf-8", "Writable should make options accessible to callback");
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this.ok = true;
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return new DummyWritable([]);
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}, {encoding: "utf-8"});
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writable.write("test");
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test.ok(writable.ok);
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test.done();
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},
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dummy: function(test) {
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var expected = [ 'line1\n', 'line2\n' ];
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var actual = [];
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test.expect(0);
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var dummy = new DummyWritable(actual);
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expected.forEach(function(item) {
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dummy.write(new Buffer(item));
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});
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test.done();
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},
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streams2: function(test) {
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var expected = [ 'line1\n', 'line2\n' ];
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var actual = [];
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var instantiated = false;
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test.expect(2);
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var writable = new Writable(function() {
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instantiated = true;
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return new DummyWritable(actual);
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});
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test.equal(instantiated, false, 'DummyWritable should only be instantiated when it is needed');
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writable.on('end', function() {
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test.equal(actual.join(''), expected.join(''), 'Writable should not change the data of the underlying stream');
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test.done();
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});
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expected.forEach(function(item) {
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writable.write(new Buffer(item));
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});
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writable.end();
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}
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};
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