grpc/src/node/test/call_test.js

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var assert = require('assert');
var grpc = require('bindings')('grpc.node');

/**
 * Helper function to return an absolute deadline given a relative timeout in
 * seconds.
 * @param {number} timeout_secs The number of seconds to wait before timing out
 * @return {Date} A date timeout_secs in the future
 */
function getDeadline(timeout_secs) {
  var deadline = new Date();
  deadline.setSeconds(deadline.getSeconds() + timeout_secs);
  return deadline;
}

describe('call', function() {
  var channel;
  var server;
  before(function() {
    server = new grpc.Server();
    var port = server.addHttp2Port('localhost:0');
    server.start();
    channel = new grpc.Channel('localhost:' + port);
  });
  after(function() {
    server.shutdown();
  });
  describe('constructor', function() {
    it('should reject anything less than 3 arguments', function() {
      assert.throws(function() {
        new grpc.Call();
      }, TypeError);
      assert.throws(function() {
        new grpc.Call(channel);
      }, TypeError);
      assert.throws(function() {
        new grpc.Call(channel, 'method');
      }, TypeError);
    });
    it('should succeed with a Channel, a string, and a date or number',
       function() {
         assert.doesNotThrow(function() {
           new grpc.Call(channel, 'method', new Date());
         });
         assert.doesNotThrow(function() {
           new grpc.Call(channel, 'method', 0);
         });
       });
    it('should fail with a closed channel', function() {
      var local_channel = new grpc.Channel('hostname');
      local_channel.close();
      assert.throws(function() {
        new grpc.Call(channel, 'method');
      });
    });
    it('should fail with other types', function() {
      assert.throws(function() {
        new grpc.Call({}, 'method', 0);
      }, TypeError);
      assert.throws(function() {
        new grpc.Call(channel, null, 0);
      }, TypeError);
      assert.throws(function() {
        new grpc.Call(channel, 'method', 'now');
      }, TypeError);
    });
  });
  describe('startBatch', function() {
    it('should fail without an object and a function', function() {
      var call = new grpc.Call(channel, 'method', getDeadline(1));
      assert.throws(function() {
        call.startBatch();
      });
      assert.throws(function() {
        call.startBatch({});
      });
      assert.throws(function() {
        call.startBatch(null, function(){});
      });
    });
    it('should succeed with an empty object', function(done) {
      var call = new grpc.Call(channel, 'method', getDeadline(1));
      assert.doesNotThrow(function() {
        call.startBatch({}, function(err) {
          assert.ifError(err);
          done();
        });
      });
    });
  });
  describe('startBatch with metadata', function() {
    it('should succeed with a map of strings to string arrays', function(done) {
      var call = new grpc.Call(channel, 'method', getDeadline(1));
      assert.doesNotThrow(function() {
        var batch = {};
        batch[grpc.opType.SEND_INITIAL_METADATA] = {'key1': ['value1'],
                                                    'key2': ['value2']};
        call.startBatch(batch, function(err, resp) {
          assert.ifError(err);
          assert.deepEqual(resp, {'send metadata': true});
          done();
        });
      });
    });
    it('should succeed with a map of strings to buffer arrays', function(done) {
      var call = new grpc.Call(channel, 'method', getDeadline(1));
      assert.doesNotThrow(function() {
        var batch = {};
        batch[grpc.opType.SEND_INITIAL_METADATA] = {
          'key1': [new Buffer('value1')],
          'key2': [new Buffer('value2')]
        };
        call.startBatch(batch, function(err, resp) {
          assert.ifError(err);
          assert.deepEqual(resp, {'send metadata': true});
          done();
        });
      });
    });
    it('should fail with other parameter types', function() {
      var call = new grpc.Call(channel, 'method', getDeadline(1));
      assert.throws(function() {
        var batch = {};
        batch[grpc.opType.SEND_INITIAL_METADATA] = undefined;
        call.startBatch(batch, function(){});
      });
      assert.throws(function() {
        var batch = {};
        batch[grpc.opType.SEND_INITIAL_METADATA] = null;
        call.startBatch(batch, function(){});
      }, TypeError);
      assert.throws(function() {
        var batch = {};
        batch[grpc.opType.SEND_INITIAL_METADATA] = 'value';
        call.startBatch(batch, function(){});
      }, TypeError);
      assert.throws(function() {
        var batch = {};
        batch[grpc.opType.SEND_INITIAL_METADATA] = 5;
        call.startBatch(batch, function(){});
      }, TypeError);
    });
  });
  describe('cancel', function() {
    it('should succeed', function() {
      var call = new grpc.Call(channel, 'method', getDeadline(1));
      assert.doesNotThrow(function() {
        call.cancel();
      });
    });
  });
});