(SERVER-297) Add acceptance tests for env behavior

Without this patch there aren't any acceptance tests that validate the
behavior of environment handling.  This patch addresses the problem by
adding a test for the irb and ruby commands.  The gem command is already
tested via the `gem env` command and is difficult to inspect the
environment from since it doesn't evaluate arbitrary code like irb and
ruby can.

acceptance/suites/tests/010-puppetserver-cli/subcommand/SERVER-297_common_behavior.rb

@@ -0,0 +1,23 @@
+require 'test/unit/assertions'
+require 'json'
+
+test_name "Puppetserver subcommand consolidated ENV handling tests."
+
+step "ruby: Check that PATH, HOME, GEM_HOME JARS_REQUIRE and JARS_NO_REQUIRE are present"
+on(master, "puppetserver ruby -rjson -e 'puts JSON.pretty_generate(ENV.to_hash)'") do
+  env = JSON.parse(stdout)
+  assert(env['PATH'], "PATH missing")
+  assert(env['HOME'], "HOME missing")
+  assert(env['GEM_HOME'], "GEM_HOME missing")
+  assert(env['JARS_REQUIRE'], "JARS_REQUIRE missing")
+  assert(env['JARS_NO_REQUIRE'], "JARS_NO_REQUIRE missing")
+end
+
+step "irb: Check that PATH, HOME, GEM_HOME JARS_REQUIRE and JARS_NO_REQUIRE are present"
+on(master, "puppetserver irb -f -rjson -e 'puts JSON.pretty_generate(ENV.to_hash)'") do
+  assert_match(/\bPATH\b/, output, "PATH missing")
+  assert_match(/\bHOME\b/, output, "HOME missing")
+  assert_match(/\bGEM_HOME\b/, output, "GEM_HOME missing")
+  assert_match(/\bJARS_REQUIRE\b/, output, "JARS_REQUIRE missing")
+  assert_match(/\bJARS_NO_REQUIRE\b/, output, "JARS_NO_REQUIRE missing")
+end

acceptance/suites/tests/010-puppetserver-cli/subcommand/gem.rb

@@ -66,3 +66,6 @@
 initial_installed_gems.each do |gem_info|
   assert_send([final_installed_gems, :include?, gem_info])
 end
+
+step "Verify that gem env operates"
+on(master, "#{cli} gem env", :acceptable_exit_codes => [0])