Allow with_path_based_gem to specify the directory name

spec/bundler_inject_spec.rb

@@ -117,8 +117,8 @@
           expect(err).to match %r{^\*\* override_gem\("ansi", :git=>"https://github.com/rubyworks/ansi"\) at .+/bundler\.d/local_overrides\.rb:1$}
         end
 
-        it "with a path" do
-          with_path_based_gem("https://github.com/rubyworks/ansi") do |path|
+        it "with an absolute path" do
+          with_path_based_gem("https://github.com/rubyworks/ansi", "the_gem") do |path|
             write_bundler_d_file <<~F
               override_gem "ansi", :path => #{path.to_s.inspect}
             F
@@ -129,8 +129,8 @@
           end
         end
 
-        it "with a path that includes ~" do
-          with_path_based_gem("https://github.com/rubyworks/ansi") do |path|
+        it "with a full path that includes ~" do
+          with_path_based_gem("https://github.com/rubyworks/ansi", "the_gem") do |path|
             path = Pathname.new("~/#{path.relative_path_from(Pathname.new("~").expand_path)}")
 
             write_bundler_d_file <<~F

spec/support/helpers.rb

@@ -93,14 +93,14 @@ def rm_global_bundler_d_dir
       FileUtils.rm_rf(Helpers.global_bundler_d_dir)
     end
 
-    def with_path_based_gem(source_repo)
+    def with_path_based_gem(source_repo, dir_name = "the_gem")
       Dir.mktmpdir do |path|
         path = Pathname.new(path)
         Dir.chdir(path) do
-          out, status = Open3.capture2e("git clone --depth 1 #{source_repo} the_gem")
+          out, status = Open3.capture2e("git clone --depth 1 #{source_repo} #{dir_name}")
           raise "An error occured while cloning #{source_repo.inspect}...\n#{out}" unless status.exitstatus == 0
         end
-        path = path.join("the_gem")
+        path = path.join(dir_name)
 
         yield path
       end