Initial commit

node_modules/duplexer2/test/tests.js

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+var assert = require("chai").assert;
+
+var stream = require("readable-stream");
+
+var duplexer2 = require("../");
+
+describe("duplexer2", function() {
+  var writable, readable;
+
+  beforeEach(function() {
+    writable = new stream.Writable({objectMode: true});
+    readable = new stream.Readable({objectMode: true});
+
+    writable._write = function _write(input, encoding, done) {
+      return done();
+    };
+
+    readable._read = function _read(n) {
+    };
+  });
+
+  it("should interact with the writable stream properly for writing", function(done) {
+    var duplex = duplexer2(writable, readable);
+
+    writable._write = function _write(input, encoding, _done) {
+      assert.strictEqual(input, "well hello there");
+
+      return done();
+    };
+
+    duplex.write("well hello there");
+  });
+
+  it("should interact with the readable stream properly for reading", function(done) {
+    var duplex = duplexer2(writable, readable);
+
+    duplex.on("data", function(e) {
+      assert.strictEqual(e, "well hello there");
+
+      return done();
+    });
+
+    readable.push("well hello there");
+  });
+
+  it("should end the writable stream, causing it to finish", function(done) {
+    var duplex = duplexer2(writable, readable);
+
+    writable.once("finish", done);
+
+    duplex.end();
+  });
+
+  it("should finish when the writable stream finishes", function(done) {
+    var duplex = duplexer2(writable, readable);
+
+    duplex.once("finish", done);
+
+    writable.end();
+  });
+
+  it("should end when the readable stream ends", function(done) {
+    var duplex = duplexer2(writable, readable);
+
+    // required to let "end" fire without reading
+    duplex.resume();
+    duplex.once("end", done);
+
+    readable.push(null);
+  });
+
+  it("should bubble errors from the writable stream when no behaviour is specified", function(done) {
+    var duplex = duplexer2(writable, readable);
+
+    var originalErr = Error("testing");
+
+    duplex.on("error", function(err) {
+      assert.strictEqual(err, originalErr);
+
+      return done();
+    });
+
+    writable.emit("error", originalErr);
+  });
+
+  it("should bubble errors from the readable stream when no behaviour is specified", function(done) {
+    var duplex = duplexer2(writable, readable);
+
+    var originalErr = Error("testing");
+
+    duplex.on("error", function(err) {
+      assert.strictEqual(err, originalErr);
+
+      return done();
+    });
+
+    readable.emit("error", originalErr);
+  });
+
+  it("should bubble errors from the writable stream when bubbleErrors is true", function(done) {
+    var duplex = duplexer2({bubbleErrors: true}, writable, readable);
+
+    var originalErr = Error("testing");
+
+    duplex.on("error", function(err) {
+      assert.strictEqual(err, originalErr);
+
+      return done();
+    });
+
+    writable.emit("error", originalErr);
+  });
+
+  it("should bubble errors from the readable stream when bubbleErrors is true", function(done) {
+    var duplex = duplexer2({bubbleErrors: true}, writable, readable);
+
+    var originalErr = Error("testing");
+
+    duplex.on("error", function(err) {
+      assert.strictEqual(err, originalErr);
+
+      return done();
+    });
+
+    readable.emit("error", originalErr);
+  });
+
+  it("should not bubble errors from the writable stream when bubbleErrors is false", function(done) {
+    var duplex = duplexer2({bubbleErrors: false}, writable, readable);
+
+    var timeout = setTimeout(done, 25);
+
+    duplex.on("error", function(err) {
+      clearTimeout(timeout);
+
+      return done(Error("shouldn't bubble error"));
+    });
+
+    // prevent uncaught error exception
+    writable.on("error", function() {});
+
+    writable.emit("error", Error("testing"));
+  });
+
+  it("should not bubble errors from the readable stream when bubbleErrors is false", function(done) {
+    var duplex = duplexer2({bubbleErrors: false}, writable, readable);
+
+    var timeout = setTimeout(done, 25);
+
+    duplex.on("error", function(err) {
+      clearTimeout(timeout);
+
+      return done(Error("shouldn't bubble error"));
+    });
+
+    // prevent uncaught error exception
+    readable.on("error", function() {});
+
+    readable.emit("error", Error("testing"));
+  });
+});