public void CreateCommand_should_include_read_concern_when_appropriate(
[Values(null, ReadConcernLevel.Local, ReadConcernLevel.Majority)] ReadConcernLevel?readConcernLevel)
{
var readConcern = new ReadConcern(readConcernLevel);
var mapFunction = "function() { emit(this.x, this.v); }";
var reduceFunction = "function(key, values) { var sum = 0; for (var i = 0; i < values.length; i++) { sum += values[i]; }; return sum; }";
var subject = new MapReduceLegacyOperation(_collectionNamespace, mapFunction, reduceFunction, _messageEncoderSettings)
{
ReadConcern = readConcern
};
var connectionDescription = OperationTestHelper.CreateConnectionDescription(Feature.ReadConcern.FirstSupportedVersion);
var session = OperationTestHelper.CreateSession();
var result = subject.CreateCommand(connectionDescription, session);
if (readConcern.IsServerDefault)
{
result.Contains("readConcern").Should().BeFalse();
}
else
{
result["readConcern"].Should().Be(readConcern.ToBsonDocument());
}
}
public void CreateCommand_should_throw_when_read_concern_is_not_supported()
{
var mapFunction = "function() { emit(this.x, this.v); }";
var reduceFunction = "function(key, values) { var sum = 0; for (var i = 0; i < values.length; i++) { sum += values[i]; }; return sum; }";
var subject = new MapReduceLegacyOperation(_collectionNamespace, mapFunction, reduceFunction, _messageEncoderSettings)
{
ReadConcern = ReadConcern.Majority
};
Action act = () => subject.CreateCommand(new SemanticVersion(3, 0, 0));
act.ShouldThrow <MongoClientException>();
}
public void CreateCommand_should_throw_when_read_concern_is_not_supported()
{
var mapFunction = "function() { emit(this.x, this.v); }";
var reduceFunction = "function(key, values) { var sum = 0; for (var i = 0; i < values.length; i++) { sum += values[i]; }; return sum; }";
var subject = new MapReduceLegacyOperation(_collectionNamespace, mapFunction, reduceFunction, _messageEncoderSettings)
{
ReadConcern = ReadConcern.Majority
};
var session = OperationTestHelper.CreateSession();
var connectionDescription = OperationTestHelper.CreateConnectionDescription(serverVersion: Feature.ReadConcern.LastNotSupportedVersion);
Action act = () => subject.CreateCommand(session, connectionDescription);
act.ShouldThrow <MongoClientException>();
}
public void CreateCommand_should_include_readConcern_when_using_causal_consistency(
[Values(null, ReadConcernLevel.Local, ReadConcernLevel.Majority)] ReadConcernLevel?readConcernLevel)
{
var readConcern = new ReadConcern(readConcernLevel);
var mapFunction = "function() { emit(this.x, this.v); }";
var reduceFunction = "function(key, values) { var sum = 0; for (var i = 0; i < values.length; i++) { sum += values[i]; }; return sum; }";
var subject = new MapReduceLegacyOperation(_collectionNamespace, mapFunction, reduceFunction, _messageEncoderSettings)
{
ReadConcern = readConcern
};
var connectionDescription = OperationTestHelper.CreateConnectionDescription(Feature.ReadConcern.FirstSupportedVersion, supportsSessions: true);
var session = OperationTestHelper.CreateSession(true, new BsonTimestamp(100));
var result = subject.CreateCommand(connectionDescription, session);
var expectedReadConcernDocument = readConcern.ToBsonDocument();
expectedReadConcernDocument["afterClusterTime"] = new BsonTimestamp(100);
result["readConcern"].Should().Be(expectedReadConcernDocument);
}
public void CreateCommand_should_include_readConcern_when_using_causal_consistency(
[Values(null, ReadConcernLevel.Local, ReadConcernLevel.Majority)] ReadConcernLevel?readConcernLevel)
{
var readConcern = new ReadConcern(readConcernLevel);
var mapFunction = "function() { emit(this.x, this.v); }";
var reduceFunction = "function(key, values) { var sum = 0; for (var i = 0; i < values.length; i++) { sum += values[i]; }; return sum; }";
#pragma warning disable CS0618 // Type or member is obsolete
var subject = new MapReduceLegacyOperation(_collectionNamespace, mapFunction, reduceFunction, _messageEncoderSettings)
#pragma warning restore CS0618 // Type or member is obsolete
{
ReadConcern = readConcern
};
var session = OperationTestHelper.CreateSession(isCausallyConsistent: true, operationTime: new BsonTimestamp(100));
var connectionDescription = OperationTestHelper.CreateConnectionDescription();
var result = subject.CreateCommand(session, connectionDescription);
var expectedReadConcernDocument = readConcern.ToBsonDocument();
expectedReadConcernDocument["afterClusterTime"] = new BsonTimestamp(100);
result["readConcern"].Should().Be(expectedReadConcernDocument);
}
