(PUP-10942) Don't leak environment state when creating a new instance

lib/puppet/environments.rb

@@ -225,6 +225,9 @@ def get_conf(name)
     private
 
     def create_environment(name)
+      # interpolated modulepaths may be cached from prior environment instances
+      Puppet.settings.clear_environment_settings(name)
+
       env_symbol = name.intern
       setting_values = Puppet.settings.values(env_symbol, Puppet.settings.preferred_run_mode)
       env = Puppet::Node::Environment.create(
@@ -350,7 +353,19 @@ def initialize(loader)
 
     # @!macro loader_list
     def list
-      @loader.list
+      # Evict all that have expired, in the same way as `get`
+      clear_all_expired
+
+      @loader.list.map do |env|
+        name = env.name
+        old_entry = @cache[name]
+        if old_entry
+          old_entry.value
+        else
+          add_entry(name, entry(env))
+          env
+        end
+      end
     end
 
     # @!macro loader_search_paths

lib/puppet/file_system/memory_file.rb

@@ -7,6 +7,13 @@ def self.a_missing_file(path)
     new(path, :exist? => false, :executable? => false)
   end
 
+  def self.a_missing_directory(path)
+    new(path,
+        :exist? => false,
+        :executable? => false,
+        :directory? => true)
+  end
+
   def self.a_regular_file_containing(path, content)
     new(path, :exist? => true, :executable? => false, :content => content)
   end
@@ -18,7 +25,7 @@ def self.an_executable(path)
   def self.a_directory(path, children = [])
     new(path,
         :exist? => true,
-        :excutable? => true,
+        :executable? => true,
         :directory? => true,
         :children => children)
   end

lib/puppet/settings/environment_conf.rb

@@ -29,6 +29,7 @@ def self.load_from(path_to_env, global_module_path)
       section = config.sections[:main]
     rescue Errno::ENOENT
       # environment.conf is an optional file
+      Puppet.debug { "Path to #{path_to_env} does not exist, using default environment.conf" }
     end
 
     new(path_to_env, section, global_module_path)

spec/integration/indirector/direct_file_server_spec.rb

@@ -1,5 +1,4 @@
 require 'spec_helper'
-require 'matchers/include'
 
 require 'puppet/indirector/file_content/file'
 require 'puppet/indirector/file_metadata/file'
@@ -30,7 +29,6 @@
 
 describe Puppet::Indirector::DirectFileServer, " when interacting with FileServing::Fileset and the model" do
   include PuppetSpec::Files
-  include Matchers::Include
 
   matcher :file_with_content do |name, content|
     match do |actual|
@@ -52,7 +50,7 @@
     terminus = Puppet::Indirector::FileContent::File.new
     request = terminus.indirection.request(:search, Puppet::Util.path_to_uri(path).to_s, nil, :recurse => true)
 
-    expect(terminus.search(request)).to include_in_any_order(
+    expect(terminus.search(request)).to contain_exactly(
       file_with_content(File.join(path, "one"), "one content"),
       file_with_content(File.join(path, "two"), "two content"),
       directory_named(path))