Allow specifying tmpdir for git wrapper script

lib/puppet/provider/vcsrepo/git.rb

@@ -7,7 +7,7 @@
 
  has_features :bare_repositories, :reference_tracking, :ssh_identity, :multiple_remotes,
  :user, :depth, :branch, :submodules, :safe_directory, :hooks_allowed,
- :umask, :http_proxy
+ :umask, :http_proxy, :tmpdir
 
  def create
  check_force
@@ -708,7 +708,7 @@ def git_ssh_with_identity_ssh_command(*args)
 
  # @!visiblity private
  def git_ssh_with_identity_ssh_file(*args)
- Tempfile.open('git-helper') do |f|
+ Tempfile.open('git-helper', @resource.value(:tmpdir)) do |f|
  f.puts '#!/bin/sh'
  f.puts 'SSH_AUTH_SOCKET='
  f.puts 'export SSH_AUTH_SOCKET'

lib/puppet/type/vcsrepo.rb

@@ -73,6 +73,9 @@
  feature :http_proxy,
  'The provider supports retrieving repos via HTTP/HTTPS over an HTTP/HTTPS proxy'
 
+ feature :tmpdir,
+ 'The provider supports setting the temp directory used for wrapper scripts.'
+
  ensurable do
  desc 'Ensure the version control repository.'
  attr_accessor :latest
@@ -348,6 +351,10 @@ def insync?(is)
  end
  end
 
+ newparam :tmpdir, required_features: [:tmpdir] do
+ desc 'The temp directory used for wrapper scripts.'
+ end
+
  autorequire(:package) do
  ['git', 'git-core', 'mercurial', 'subversion']
  end

spec/unit/puppet/provider/vcsrepo/git_spec.rb

@@ -689,4 +689,28 @@ def branch_a_list(include_branch = nil?)
  end
  end
  end
+
+ describe 'tmpdir' do
+ before(:each) do
+ resource[:source] = '/path/to/source'
+ resource[:identity] = '/path/to/identity'
+ expect(Dir).to receive(:chdir).with('/tmp/test').at_least(:once).and_yield
+ expect(provider).to receive(:exec_git).with('--version').and_return('1.8.3.1')
+ end
+
+ context 'when set' do
+ it 'uses tmpdir' do
+ resource[:tmpdir] = '/custom_tmp'
+ expect(Tempfile).to receive(:open).with('git-helper', '/custom_tmp')
+ expect { provider.set_mirror }.not_to raise_error
+ end
+ end
+
+ context 'when unset' do
+ it 'uses default' do
+ expect(Tempfile).to receive(:open).with('git-helper', nil)
+ expect { provider.set_mirror }.not_to raise_error
+ end
+ end
+ end
 end