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CSHARP-5162: Continue to use FindExpressionProjectionDefinition to av…
…oid regression against LINQ2.
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tests/MongoDB.Driver.Tests/Linq/Linq3Implementation/Jira/CSharp5162Tests.cs
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| /* Copyright 2010-present MongoDB Inc. | ||
| * | ||
| * 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. | ||
| */ | ||
|
|
||
| using System; | ||
| using System.Collections.Generic; | ||
| using System.Linq; | ||
| using FluentAssertions; | ||
| using MongoDB.Bson; | ||
| using MongoDB.Bson.Serialization.Attributes; | ||
| using MongoDB.Driver.Linq; | ||
| using MongoDB.TestHelpers.XunitExtensions; | ||
| using Xunit; | ||
|
|
||
| namespace MongoDB.Driver.Tests.Linq.Linq3Implementation.Jira | ||
| { | ||
| public class CSharp5162Tests : Linq3IntegrationTest | ||
| { | ||
| [Theory] | ||
| [ParameterAttributeData] | ||
| public void Builders_Projection_Expression_with_camel_casing_should_work( | ||
| [Values(LinqProvider.V2, LinqProvider.V3)] LinqProvider linqProvider) | ||
| { | ||
| var collection = GetCamelCollection(linqProvider); | ||
|
|
||
| var projection = Builders<CamelDocument>.Projection.Expression(x => new CamelDocument { Id = x.Id, Name = x.Name }); | ||
| var aggregate = collection.Aggregate().Project(projection); | ||
|
|
||
| var stages = Translate(collection, aggregate); | ||
| if (linqProvider == LinqProvider.V2) | ||
| { | ||
| AssertStages(stages, "{ $project : { _id : 1, name : 1 } }"); | ||
| } | ||
| else | ||
| { | ||
| AssertStages(stages, "{ $project : { _id : '$_id', name : '$name' } }"); | ||
| } | ||
|
|
||
| var result = aggregate.ToList().Single(); | ||
| result.Id.Should().Be(1); | ||
| result.Name.Should().Be("John Doe"); | ||
| } | ||
|
|
||
| [Theory] | ||
| [ParameterAttributeData] | ||
| public void Builders_Projection_Expression_with_pascal_casing_should_work( | ||
| [Values(LinqProvider.V2, LinqProvider.V3)] LinqProvider linqProvider) | ||
| { | ||
| var collection = GetPascalCollection(linqProvider); | ||
|
|
||
| var projection = Builders<PascalDocument>.Projection.Expression(x => new PascalDocument { Id = x.Id, Name = x.Name }); | ||
| var aggregate = collection.Aggregate().Project(projection); | ||
|
|
||
| var stages = Translate(collection, aggregate); | ||
| if (linqProvider == LinqProvider.V2) | ||
| { | ||
| stages = NormalizeProjectFieldOrder(stages); | ||
| AssertStages(stages, "{ $project : { _id : 1, Name : 1 } }"); | ||
| } | ||
| else | ||
| { | ||
| AssertStages(stages, "{ $project : { _id : '$_id', Name : '$Name' } }"); | ||
| } | ||
|
|
||
| var result = aggregate.ToList().Single(); | ||
| result.Id.Should().Be(1); | ||
| result.Name.Should().Be("John Doe"); | ||
| } | ||
|
|
||
| [Theory] | ||
| [ParameterAttributeData] | ||
| public void FindExpressionDefinition_with_camel_casing_should_work( | ||
| [Values(LinqProvider.V2, LinqProvider.V3)] LinqProvider linqProvider) | ||
| { | ||
| var collection = GetCamelCollection(linqProvider); | ||
|
|
||
| var projection = new FindExpressionProjectionDefinition<CamelDocument, CamelDocument>(x => new CamelDocument { Id = x.Id, Name = x.Name }); | ||
| var aggregate = collection.Aggregate().Project(projection); | ||
|
|
||
| var stages = Translate(collection, aggregate); | ||
| if (linqProvider == LinqProvider.V2) | ||
| { | ||
| AssertStages(stages, "{ $project : { _id : 1, name : 1 } }"); | ||
| } | ||
| else | ||
| { | ||
| AssertStages(stages, "{ $project : { _id : '$_id', name : '$name' } }"); | ||
| } | ||
|
|
||
| var result = aggregate.ToList().Single(); | ||
| result.Id.Should().Be(1); | ||
| result.Name.Should().Be("John Doe"); | ||
| } | ||
|
|
||
| [Theory] | ||
| [ParameterAttributeData] | ||
| public void FindExpressionDefinition_with_pascal_casing_should_work( | ||
| [Values(LinqProvider.V2, LinqProvider.V3)] LinqProvider linqProvider) | ||
| { | ||
| var collection = GetPascalCollection(linqProvider); | ||
|
|
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| var projection = new FindExpressionProjectionDefinition<PascalDocument, PascalDocument>(x => new PascalDocument { Id = x.Id, Name = x.Name }); | ||
| var aggregate = collection.Aggregate().Project(projection); | ||
|
|
||
| var stages = Translate(collection, aggregate); | ||
| if (linqProvider == LinqProvider.V2) | ||
| { | ||
| stages = NormalizeProjectFieldOrder(stages); | ||
| AssertStages(stages, "{ $project : { _id : 1, Name : 1 } }"); | ||
| } | ||
| else | ||
| { | ||
| AssertStages(stages, "{ $project : { _id : '$_id', Name : '$Name' } }"); | ||
| } | ||
|
|
||
| var result = aggregate.ToList().Single(); | ||
| result.Id.Should().Be(1); | ||
| result.Name.Should().Be("John Doe"); | ||
| } | ||
|
|
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| private IMongoCollection<CamelDocument> GetCamelCollection(LinqProvider linqProvider) | ||
| { | ||
| var collection = GetCollection<CamelDocument>("test", linqProvider); | ||
| var document = new CamelDocument { Id = 1, Name = "John Doe" }; | ||
| CreateCollection(collection, document); | ||
| return collection; | ||
| } | ||
|
|
||
| private IMongoCollection<PascalDocument> GetPascalCollection(LinqProvider linqProvider) | ||
| { | ||
| var collection = GetCollection<PascalDocument>("test", linqProvider); | ||
| var document = new PascalDocument { Id = 1, Name = "John Doe" }; | ||
| CreateCollection(collection, document); | ||
| return collection; | ||
| } | ||
|
|
||
| private List<BsonDocument> NormalizeProjectFieldOrder(List<BsonDocument> stages) | ||
| { | ||
| if (stages.Count == 1 && | ||
| stages[0] is BsonDocument projectStage && | ||
| projectStage.ElementCount == 1 && | ||
| projectStage.GetElement(0).Name == "$project" && | ||
| projectStage[0] is BsonDocument projection && | ||
| projection.ElementCount == 2 && | ||
| projection.Names.SequenceEqual(["Name", "_id"])) | ||
| { | ||
| stages[0]["$project"] = new BsonDocument | ||
| { | ||
| { "_id", projection["_id"] }, | ||
| { "Name", projection["Name"] } | ||
| }; | ||
| } | ||
|
|
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| return stages; | ||
| } | ||
|
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| private class CamelDocument | ||
| { | ||
| public int Id { get; set; } | ||
| [BsonElement("name")] public string Name { get; set; } | ||
| [BsonElement("activeSince")] public DateTime ActiveSince { get; set; } | ||
| [BsonElement("isActive")] public bool IsActive { get; set; } | ||
| } | ||
|
|
||
| private class PascalDocument | ||
| { | ||
| public int Id { get; set; } | ||
| public string Name { get; set; } | ||
| public DateTime ActiveSince { get; set; } | ||
| public bool IsActive { get; set; } | ||
| } | ||
| } | ||
| } |