approvaltests.cpp: Make conanfile compatible with mirror urls #26687
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Summary
Changes to recipe: approvaltests.cpp
Motivation
Fixes #26683
Passing multiple URLs per file in conandata.yml results in
self.conan_data["sources"][version]["url"]
being a list instead of a string.This recipe had hardcoded behavior that assumed the url would always be a string, which breaks when more urls are specified (as is the case in our downstream automation).
Details
Fix the
source
method to accept either a string, list or tuple as URL. I took inspiration by the implementation ofconan.tools.files.get