first commit

build/node_modules/multipipe/test/multipipe.js

@@ -0,0 +1,141 @@
+var assert = require('assert');
+var pipe = require('..');
+var Stream = require('stream');
+
+describe('pipe(a)', function(){
+  it('should return a', function(){
+    var readable = Readable();
+    var stream = pipe(readable);
+    assert.equal(stream, readable);
+  });
+});
+
+describe('pipe(a, b, c)', function(){
+  it('should pipe internally', function(done){
+    pipe(Readable(), Transform(), Writable(done));
+  });
+  
+  it('should be writable', function(done){
+    var stream = pipe(Transform(), Writable(done));
+    assert(stream.writable);
+    Readable().pipe(stream);
+  });
+
+  it('should be readable', function(done){
+    var stream = pipe(Readable(), Transform());
+    assert(stream.readable);
+    stream.pipe(Writable(done));
+  });
+  
+  it('should be readable and writable', function(done){
+    var stream = pipe(Transform(), Transform());
+    assert(stream.readable);
+    assert(stream.writable);
+    Readable()
+    .pipe(stream)
+    .pipe(Writable(done));
+  });
+ 
+  describe('errors', function(){
+    it('should reemit', function(done){
+      var a = Transform();
+      var b = Transform();
+      var c = Transform();
+      var stream = pipe(a, b, c);
+      var err = new Error;
+      var i = 0;
+      
+      stream.on('error', function(_err){
+        i++;
+        assert.equal(_err, err);
+        assert(i <= 3);
+        if (i == 3) done();
+      });
+      
+      a.emit('error', err);
+      b.emit('error', err);
+      c.emit('error', err);
+    });
+
+    it('should not reemit endlessly', function(done){
+      var a = Transform();
+      var b = Transform();
+      var c = Transform();
+      c.readable = false;
+      var stream = pipe(a, b, c);
+      var err = new Error;
+      var i = 0;
+      
+      stream.on('error', function(_err){
+        i++;
+        assert.equal(_err, err);
+        assert(i <= 3);
+        if (i == 3) done();
+      });
+      
+      a.emit('error', err);
+      b.emit('error', err);
+      c.emit('error', err);
+    });
+  });
+});
+
+describe('pipe(a, b, c, fn)', function(){
+  it('should call on finish', function(done){
+    var finished = false;
+    var a = Readable();
+    var b = Transform();
+    var c = Writable(function(){
+      finished = true;
+    });
+
+    pipe(a, b, c, function(err){
+      assert(!err);
+      assert(finished);
+      done();
+    });
+  });
+
+  it('should call with error once', function(done){
+    var a = Readable();
+    var b = Transform();
+    var c = Writable();
+    var err = new Error;
+
+    pipe(a, b, c, function(err){
+      assert(err);
+      done();
+    });
+
+    a.emit('error', err);
+    b.emit('error', err);
+    c.emit('error', err);
+  });
+});
+
+function Readable(){
+  var readable = new Stream.Readable({ objectMode: true });
+  readable._read = function(){
+    this.push('a');
+    this.push(null);
+  };
+  return readable;
+}
+
+function Transform(){
+  var transform = new Stream.Transform({ objectMode: true });
+  transform._transform = function(chunk, _, done){
+    done(null, chunk.toUpperCase());
+  };
+  return transform;
+}
+
+function Writable(cb){
+  var writable = new Stream.Writable({ objectMode: true });
+  writable._write = function(chunk, _, done){
+    assert.equal(chunk, 'A');
+    done();
+    cb();
+  };
+  return writable;
+}