Add the force_latest_compatible_version input, and add the "auto-detect Dependabot/CompatHelper" functionality

LICENSE

@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2018-2020 GitHub, Inc., David Anthoff and contributors
+Copyright (c) 2018-2021 GitHub, Inc., David Anthoff and contributors
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

action.yml

@@ -13,6 +13,9 @@ inputs:
   depwarn:
     description: 'Value passed to the --depwarn flag. Options: yes | no | error. Default value: yes.'
     default: 'yes'
+  force_latest_compatible_version:
+    description: 'If true, then, for each [compat] entry in the active project, only allow the latest compatible version. If the value is auto and the pull request has been opened by Dependabot or CompatHelper, then force_latest_compatible_version will be set to true, otherwise it will be set to false. Options: true | false | auto. Default value: auto.'
+    default: 'auto'
   inline:
     description: 'Value passed to the --inline flag. Options: yes | no. Default value: yes.'
     default: 'yes'
@@ -45,7 +48,7 @@ runs:
         JULIA_PKG_SERVER: ""
     - run: |
         # The Julia command that will be executed
-        julia_cmd=( julia --color=yes --check-bounds=yes --inline=${{ inputs.inline }} --depwarn=${{ inputs.depwarn }} --project=${{ inputs.project }} -e 'using Pkg; Pkg.test(coverage=${{ inputs.coverage }})' )
+        julia_cmd=( julia --check-bounds=yes --color=yes --depwarn=${{ inputs.depwarn }} --inline=${{ inputs.inline }} --project=${{ inputs.project }} -e 'import Pkg;include(joinpath(ENV["GITHUB_ACTION_PATH"], "kwargs.jl"));kwargs = Kwargs.kwargs(;coverage = :(${{ inputs.coverage }}),force_latest_compatible_version = :(${{ inputs.force_latest_compatible_version }}),);Pkg.test(; kwargs...)' )
 
         # Add the prefix in front of the command if there is one
         prefix="${{ inputs.prefix }}"

autodetect-dependabot.jl

@@ -0,0 +1,25 @@
+module AutodetectDependabot
+
+function _get_possible_branch_names()
+    possible_branch_names = [
+        get(ENV, "GITHUB_BASE_REF", ""),
+        get(ENV, "GITHUB_HEAD_REF", ""),
+        get(ENV, "GITHUB_REF", ""),
+    ]
+    return possible_branch_names
+end
+
+function _chop_refs_head(branch_name::AbstractString)
+    replace(branch_name, r"^(refs\/heads\/)" => "")
+end
+
+function _is_dependabot_branch(branch_name::AbstractString)
+    return startswith(branch_name, "dependabot/julia") || startswith(branch_name, "compathelper/")
+end
+
+function is_dependabot_job()
+    possible_branch_names = _get_possible_branch_names()
+    return any(_is_dependabot_branch.(_chop_refs_head.(possible_branch_names)))
+end
+
+end # module

kwargs.jl

@@ -0,0 +1,30 @@
+module Kwargs
+
+include(joinpath(@__DIR__, "autodetect-dependabot.jl"))
+
+function kwargs(; coverage::Bool,
+                  force_latest_compatible_version::Union{Bool, Symbol})
+    if !(force_latest_compatible_version isa Bool) && (force_latest_compatible_version != :auto)
+        throw(ArgumentError("Invalid value for force_latest_compatible_version: $(force_latest_compatible_version)"))
+    end
+
+    kwargs_dict = Dict{Symbol, Any}()
+    kwargs_dict[:coverage] = coverage
+
+    if VERSION < v"1.7.0-"
+        (force_latest_compatible_version != :auto) && @warn("The `force_latest_compatible_version` option requires at least Julia 1.7", VERSION, force_latest_compatible_version)
+        return kwargs_dict
+    end
+
+    if force_latest_compatible_version == :auto
+        is_dependabot_job = AutodetectDependabot.is_dependabot_job()
+        is_dependabot_job && @info("This is a Dependabot/CompatHelper job, so `force_latest_compatible_version` has been set to `true`")
+        kwargs_dict[:force_latest_compatible_version] = is_dependabot_job
+    else
+        kwargs_dict[:force_latest_compatible_version] = force_latest_compatible_version::Bool
+    end
+
+    return kwargs_dict
+end
+
+end # module