public void PipelineStageDefinitionBuilder_GroupForLinq3_with_expressions_should_throw_with_LINQ2()
{
var(groupStageDefinition, projectStageDefinition) = PipelineStageDefinitionBuilder.GroupForLinq3((BsonDocument x) => 1, x => new { Count = x.Count() });
var exception = Record.Exception(() => Linq3TestHelpers.Render(groupStageDefinition, BsonDocumentSerializer.Instance, LinqProvider.V2));
exception.Should().BeOfType <InvalidOperationException>();
}
public void PipelineDefinitionBuilder_GroupForLinq3_with_expressions_should_throw_with_LINQ2()
{
var emptyPipeline = (PipelineDefinition <BsonDocument, BsonDocument>) new EmptyPipelineDefinition <BsonDocument>();
var pipeline = emptyPipeline.GroupForLinq3(x => 1, x => new { Count = x.Count() });
var exception = Record.Exception(() => Linq3TestHelpers.Render(pipeline, BsonDocumentSerializer.Instance, LinqProvider.V2));
exception.Should().BeOfType <InvalidOperationException>();
}
public void PipelineStageDefinitionBuilder_Group_with_expressions_should_work_with_LINQ2()
{
var stageDefinition = PipelineStageDefinitionBuilder.Group((BsonDocument x) => 1, x => new { Count = x.Count() });
var stage = Linq3TestHelpers.Render(stageDefinition, BsonDocumentSerializer.Instance, LinqProvider.V2);
var expectedStages = new[]
{
"{ $group : { _id : 1, Count : { $sum : 1 } } }"
};
Linq3TestHelpers.AssertStages(new[] { stage }, expectedStages);
}
public void PipelineStageDefinitionBuilder_Group_with_projection_to_TOutput_should_work(
[Values(LinqProvider.V2, LinqProvider.V3)] LinqProvider linqProvider)
{
var stageDefinition = PipelineStageDefinitionBuilder.Group <BsonDocument, BsonDocument>("{ _id : 1, Count : { $sum : 1 } }");
var stage = Linq3TestHelpers.Render(stageDefinition, BsonDocumentSerializer.Instance, linqProvider);
var expectedStages = new[]
{
"{ $group : { _id : 1, Count : { $sum : 1 } } }"
};
Linq3TestHelpers.AssertStages(new[] { stage }, expectedStages);
}
public void PipelineDefinitionBuilder_Group_with_expressions_should_work_with_LINQ2()
{
var emptyPipeline = (PipelineDefinition <BsonDocument, BsonDocument>) new EmptyPipelineDefinition <BsonDocument>();
var pipeline = emptyPipeline.Group(x => 1, x => new { Count = x.Count() });
var stages = Linq3TestHelpers.Render(pipeline, BsonDocumentSerializer.Instance, LinqProvider.V2);
var expectedStages = new[]
{
"{ $group : { _id : 1, Count : { $sum : 1 } } }"
};
Linq3TestHelpers.AssertStages(stages, expectedStages);
}
public void PipelineDefinitionBuilder_Group_with_projection_to_implied_BsonDocument_should_work(
[Values(LinqProvider.V2, LinqProvider.V3)] LinqProvider linqProvider)
{
var emptyPipeline = (PipelineDefinition <BsonDocument, BsonDocument>) new EmptyPipelineDefinition <BsonDocument>();
var pipeline = emptyPipeline.Group("{ _id : 1, Count : { $sum : 1 } }");
var stages = Linq3TestHelpers.Render(pipeline, BsonDocumentSerializer.Instance, linqProvider);
var expectedStages = new[]
{
"{ $group : { _id : 1, Count : { $sum : 1 } } }"
};
Linq3TestHelpers.AssertStages(stages, expectedStages);
}
public void PipelineStageDefinitionBuilderGroupForLinq3_with_expressions_should_work_with_LINQ3()
{
var(groupStageDefinition, projectStageDefinition) = PipelineStageDefinitionBuilder.GroupForLinq3((BsonDocument x) => 1, x => new { Count = x.Count() });
var groupStage = Linq3TestHelpers.Render(groupStageDefinition, BsonDocumentSerializer.Instance, LinqProvider.V3);
var groupingSerializer = new IGroupingSerializer <int, BsonDocument>(new Int32Serializer(), BsonDocumentSerializer.Instance);
var projectStage = Linq3TestHelpers.Render(projectStageDefinition, groupingSerializer, LinqProvider.V3);
var expectedStages = new[]
{
"{ $group : { _id : 1, __agg0 : { $sum : 1 } } }",
"{ $project : { Count : '$__agg0', _id : 0 } }"
};
Linq3TestHelpers.AssertStages(new[] { groupStage, projectStage }, expectedStages);
}