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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
'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);
});
});
});
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