When testing, do not authenticate to GitHub

When you try to deploy, we automatically try to authenticate to GitHub
and ensure that we have write privileges to the appropriate account.
Let's not do that when we're running `Pkg.test()` though.

Author: staticfloat

src/Universes.jl

@@ -14,6 +14,8 @@ using Logging
 
 export Universe, in_universe
 
+const allow_github_authentication::Ref{Bool} = Ref(true)
+
 function update_registries!(registries::Vector{RegistrySpec},
                             depot_path::String;
                             verbose::Bool = false)
@@ -129,9 +131,11 @@ struct Universe
         if deploy_org !== nothing
             # Authenticate to GitHub, then ensure that we are either deploying to our
             # user, or an organization we are a part of
-            ensure_gh_authenticated()
-            if deploy_org != gh_user() && deploy_org ∉ gh_orgs()
-                throw(ArgumentError("deploy target '$(deploy)' not a user/organization we have access to!"))
+            if allow_github_authentication[]
+                ensure_gh_authenticated()
+                if deploy_org != gh_user() && deploy_org ∉ gh_orgs()
+                    throw(ArgumentError("deploy target '$(deploy)' not a user/organization we have access to!"))
+                end
             end
         end
 

test/BuildMetaTests.jl

@@ -2,6 +2,8 @@ using Test, BinaryBuilder2, Pkg
 using BinaryBuilder2: parse_build_tarballs_args, universes_dir
 using Base.BinaryPlatforms
 
+# Ensure that, when testing, we do not attempt to authenticate to GitHub
+BinaryBuilder2.allow_github_authentication[] = false
 @testset "BuildMeta" begin
     @testset "parse_build_tarballs_args" begin
         # Ensure that we get very simple defaults for no args