Proposal for Multi-Library, Multi-Resource Tests

[evan-gordon]

Proposal for Multi-Library, Multi-Resource Tests

[suyashkumar]

After more discussion, we've pivoted to XML to remain more consistent with the existing test schema, allow readable multi-line tests, something along the lines of soemthing like what's below.

We haven't decided fully on references to data and libraries on disk.

<tests xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://hl7.org/fhirpath/tests" xsi:schemaLocation="http://hl7.org/fhirpath/tests ../../testSchema/testSchema.xsd"
	name="OverloadMatching" reference="https://cql.hl7.org/09-b-cqlreference.html#aggregate-functions">
    <test name="SimpleOverloadMatching">
        <library>
        library test version '0.0.1'

        define function A(foo Integer): 1
        define function A(foo Decimal): 2

        define output: A(1.0)
        </library>
        <description>This is a test description.</description>
        <output name="output">1</output>
    </test>

    <test name="LibraryRef">
        <libraryRef identifier="mylib" path="tests/123.cql"/>
        <output name="output">1</output>
        <output name="output1">2</output>
    </test>

    <test name="DataRef">
        <libraryRef identifier="mylib" path="tests/123.cql"/>
        <dataRef path="../commondata/data.json"/>
        
        <output name="output">1</output>
        <output name="output1">2</output>
    </test>

</tests>