(Maint) use PuppetlabsSpec::PuppetSeams.parser_scope

Without this patch all of the spec tests for parser functions in stdlib
would instantiate their own scope instances.  This is a problem because
the standard library is tightly coupled with the internal behavior of
Puppet.  Tight coupling like this creates failures when we change the
internal behavior of Puppet.  This is exactly what happened recently
when we changed the method signature for the initializer of
Puppet::Parser::Scope instances.

This patch fixes the problem by creating scope instances using the
puppet labs spec helper.  The specific method that provides scope
instances in Puppet-version-independent way is something like this:

 let(:scope) { PuppetlabsSpec::PuppetSeams.parser_scope }

This patch simply implements this across the board.

1 files changed, 6 insertions, 29 deletions

diff --git a/spec/unit/puppet/parser/functions/getvar_spec.rb b/spec/unit/puppet/parser/functions/getvar_spec.rb
index 16edd98..0fb9c83 100644
--- a/spec/unit/puppet/parser/functions/getvar_spec.rb
+++ b/spec/unit/puppet/parser/functions/getvar_spec.rb
@@ -1,36 +1,17 @@
-require 'puppet'
+#! /usr/bin/env ruby -S rspec
+require 'spec_helper'
 
-# We don't need this for the basic tests we're doing
-# require 'spec_helper'
-
-# Dan mentioned that Nick recommended the function method call
-# to return the string value for the test description.
-# this will not even try the test if the function cannot be
-# loaded.
 describe Puppet::Parser::Functions.function(:getvar) do
-
-  # Pulled from Dan's create_resources function
-  def get_scope
-    @topscope = Puppet::Parser::Scope.new
-    # This is necessary so we don't try to use the compiler to discover our parent.
-    @topscope.parent = nil
-    @scope = Puppet::Parser::Scope.new
-    @scope.compiler = Puppet::Parser::Compiler.new(Puppet::Node.new("floppy", :environment => 'production'))
-    @scope.parent = @topscope
-    @compiler = @scope.compiler
-  end
-
+  let(:scope) { PuppetlabsSpec::PuppetSeams.parser_scope }
   describe 'when calling getvar from puppet' do
 
     it "should not compile when no arguments are passed" do
       Puppet[:code] = 'getvar()'
-      get_scope
-      expect { @scope.compiler.compile }.should raise_error(Puppet::ParseError, /wrong number of arguments/)
+      expect { scope.compiler.compile }.should raise_error(Puppet::ParseError, /wrong number of arguments/)
     end
     it "should not compile when too many arguments are passed" do
       Puppet[:code] = 'getvar("foo::bar", "baz")'
-      get_scope
-      expect { @scope.compiler.compile }.should raise_error(Puppet::ParseError, /wrong number of arguments/)
+      expect { scope.compiler.compile }.should raise_error(Puppet::ParseError, /wrong number of arguments/)
     end
 
     it "should lookup variables in other namespaces" do
@@ -43,11 +24,7 @@ describe Puppet::Parser::Functions.function(:getvar) do
           fail('getvar did not return what we expect')
         }
       ENDofPUPPETcode
-      get_scope
-      @scope.compiler.compile
+      scope.compiler.compile
     end
-
   end
-
 end
-