Initial checkin of gRPC to third_party/

third_party/grpc/src/node/test/channel_test.js

+/*
+ *
+ * Copyright 2015-2016, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+'use strict';
+
+var assert = require('assert');
+var grpc = require('../src/grpc_extension');
+
+/**
+ * This is used for testing functions with multiple asynchronous calls that
+ * can happen in different orders. This should be passed the number of async
+ * function invocations that can occur last, and each of those should call this
+ * function's return value
+ * @param {function()} done The function that should be called when a test is
+ *     complete.
+ * @param {number} count The number of calls to the resulting function if the
+ *     test passes.
+ * @return {function()} The function that should be called at the end of each
+ *     sequence of asynchronous functions.
+ */
+function multiDone(done, count) {
+  return function() {
+    count -= 1;
+    if (count <= 0) {
+      done();
+    }
+  };
+}
+var insecureCreds = grpc.ChannelCredentials.createInsecure();
+
+describe('channel', function() {
+  describe('constructor', function() {
+    it('should require a string for the first argument', function() {
+      assert.doesNotThrow(function() {
+        new grpc.Channel('hostname', insecureCreds);
+      });
+      assert.throws(function() {
+        new grpc.Channel();
+      }, TypeError);
+      assert.throws(function() {
+        new grpc.Channel(5);
+      });
+    });
+    it('should require a credential for the second argument', function() {
+      assert.doesNotThrow(function() {
+        new grpc.Channel('hostname', insecureCreds);
+      });
+      assert.throws(function() {
+        new grpc.Channel('hostname', 5);
+      });
+      assert.throws(function() {
+        new grpc.Channel('hostname');
+      });
+    });
+    it('should accept an object for the third argument', function() {
+      assert.doesNotThrow(function() {
+        new grpc.Channel('hostname', insecureCreds, {});
+      });
+      assert.throws(function() {
+        new grpc.Channel('hostname', insecureCreds, 'abc');
+      });
+    });
+    it('should only accept objects with string or int values', function() {
+      assert.doesNotThrow(function() {
+        new grpc.Channel('hostname', insecureCreds,{'key' : 'value'});
+      });
+      assert.doesNotThrow(function() {
+        new grpc.Channel('hostname', insecureCreds, {'key' : 5});
+      });
+      assert.throws(function() {
+        new grpc.Channel('hostname', insecureCreds, {'key' : null});
+      });
+      assert.throws(function() {
+        new grpc.Channel('hostname', insecureCreds, {'key' : new Date()});
+      });
+    });
+    it('should succeed without the new keyword', function() {
+      assert.doesNotThrow(function() {
+        var channel = grpc.Channel('hostname', insecureCreds);
+        assert(channel instanceof grpc.Channel);
+      });
+    });
+  });
+  describe('close', function() {
+    var channel;
+    beforeEach(function() {
+      channel = new grpc.Channel('hostname', insecureCreds, {});
+    });
+    it('should succeed silently', function() {
+      assert.doesNotThrow(function() {
+        channel.close();
+      });
+    });
+    it('should be idempotent', function() {
+      assert.doesNotThrow(function() {
+        channel.close();
+        channel.close();
+      });
+    });
+  });
+  describe('getTarget', function() {
+    var channel;
+    beforeEach(function() {
+      channel = new grpc.Channel('hostname', insecureCreds, {});
+    });
+    it('should return a string', function() {
+      assert.strictEqual(typeof channel.getTarget(), 'string');
+    });
+  });
+  describe('getConnectivityState', function() {
+    var channel;
+    beforeEach(function() {
+      channel = new grpc.Channel('hostname', insecureCreds, {});
+    });
+    it('should return IDLE for a new channel', function() {
+      assert.strictEqual(channel.getConnectivityState(),
+                         grpc.connectivityState.IDLE);
+    });
+  });
+  describe('watchConnectivityState', function() {
+    var channel;
+    beforeEach(function() {
+      channel = new grpc.Channel('localhost', insecureCreds, {});
+    });
+    afterEach(function() {
+      channel.close();
+    });
+    it('should time out if called alone', function(done) {
+      var old_state = channel.getConnectivityState();
+      var deadline = new Date();
+      deadline.setSeconds(deadline.getSeconds() + 1);
+      channel.watchConnectivityState(old_state, deadline, function(err, value) {
+        assert(err);
+        done();
+      });
+    });
+    it('should complete if a connection attempt is forced', function(done) {
+      var old_state = channel.getConnectivityState();
+      var deadline = new Date();
+      deadline.setSeconds(deadline.getSeconds() + 1);
+      channel.watchConnectivityState(old_state, deadline, function(err, value) {
+        assert.ifError(err);
+        assert.notEqual(value.new_state, old_state);
+        done();
+      });
+      channel.getConnectivityState(true);
+    });
+    it('should complete twice if called twice', function(done) {
+      done = multiDone(done, 2);
+      var old_state = channel.getConnectivityState();
+      var deadline = new Date();
+      deadline.setSeconds(deadline.getSeconds() + 1);
+      channel.watchConnectivityState(old_state, deadline, function(err, value) {
+        assert.ifError(err);
+        assert.notEqual(value.new_state, old_state);
+        done();
+      });
+      channel.watchConnectivityState(old_state, deadline, function(err, value) {
+        assert.ifError(err);
+        assert.notEqual(value.new_state, old_state);
+        done();
+      });
+      channel.getConnectivityState(true);
+    });
+  });
+});