Fix Integration test - System.ArgumentException: 'Cannot generate a hash code for ValueTuple`3 Arg_ParamName_Name'

[baseTwo]

Error

The Integration Test running is failing with the following exception:

System.ArgumentException
  HResult=0x80070057
  Message=Cannot generate a hash code for ValueTuple`3 Arg_ParamName_Name
  Source=Hl7.Cql.Comparers
  StackTrace:
   at Hl7.Cql.Comparers.CqlComparers.GetHashCode(Object x) in C:\Dev\firely-cql-sdk\Cql\Cql.Comparers\CqlComparers.cs:line 321

at

Measures.CMS.dll!UrinarySymptomScoreChangeAfterBenignProstaticHyperplasiaFHIR_1_3_000.Urinary_Symptom_Score_Assessment(Hl7.Cql.Runtime.CqlContext context) Line 707
	at C:\Dev\firely-cql-sdk\Demo\Measures.CMS\CSharp\UrinarySymptomScoreChangeAfterBenignProstaticHyperplasiaFHIR-1.3.000.g.cs(707)

while running this test

UrinarySymptomScoreChangeAfterBenignProstaticHyperplasiaFHIR.Population_FromResource(testCaseId: "051c5977-9f2c-4e8b-8e02-ac3ec0c718d6")

Background

Tuples emitted to C# have recently changed from being derived from TupleBaseType to just value tuples (ValueTuple<,,,...> at runtime).

Solution

• The CqlComparer must be updated to support value tuples
• Add unit tests
• TupleBaseType is part of the Cql.Primitives project. It is no longer used at runtime, consider making this internal. It is only used to generate the expression LINQ tree as a temporary placeholder until C# generates value tuples.