diff -r 000000000000 -r 3cc90e88c6ab spec/spec_helper.rb
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/spec/spec_helper.rb	Thu Nov 05 10:34:15 2015 -0800
@@ -0,0 +1,110 @@
+#!/usr/bin/ruby
+# coding: utf-8
+
+BEGIN {
+	require 'pathname'
+	basedir = Pathname( __FILE__ ).dirname.parent
+
+	thingfishdir = basedir.parent + 'Thingfish'
+	thingfishlib = thingfishdir + 'lib'
+
+	$LOAD_PATH.unshift( thingfishlib.to_s ) if thingfishlib.exist?
+}
+
+
+# SimpleCov test coverage reporting; enable this using the :coverage rake task
+require 'simplecov' if ENV['COVERAGE']
+
+require 'loggability'
+require 'loggability/spechelpers'
+require 'configurability'
+require 'configurability/behavior'
+
+require 'rspec'
+require 'thingfish'
+require 'thingfish/spechelpers'
+require 'thingfish/behaviors'
+require 'thingfish/metastore'
+
+Loggability.format_with( :color ) if $stdout.tty?
+
+# Some helper functions for testing. Usage:
+#
+#    # in spec/spec_helper.rb
+#    RSpec.configure do |c|
+#      c.include( Thingfish::Metastore::PgGraph::SpecHelpers )
+#    end
+#
+#    # in my_class_spec.rb; mark an example as needing database setup
+#    describe MyClass, db: true do
+#    end
+#
+module Thingfish::MetastorePGSpecHelpers
+
+	TESTDB_ENV_VAR = 'THINGFISH_DB_URI'
+
+	### Inclusion callback -- install some hooks
+	def self::included( context )
+
+		context.before( :all ) do
+			if ((db_uri = ENV[ TESTDB_ENV_VAR ]))
+				Thingfish::Metastore::PgGraph.configure( uri: db_uri )
+			end
+		end
+
+		context.after( :all ) do
+			Thingfish::Metastore::PgGraph.teardown_database if Thingfish::Metastore::PgGraph.db
+		end
+
+		context.around( :each ) do |example|
+			if (( setting = example.metadata[:db] ))
+				Loggability[ Thingfish::Metastore::PgGraph ].debug "DB setting: %p" % [ setting ]
+
+				if ((db = Thingfish::Metastore::PgGraph.db))
+					if setting == :no_transaction || setting == :without_transaction
+						Loggability[ Thingfish::Metastore::PgGraph ].debug "  running without a transaction"
+						example.run
+					else
+						Loggability[ Thingfish::Metastore::PgGraph ].debug "  running with a transaction"
+						db.transaction( rollback: :always ) do
+							example.run
+						end
+					end
+				elsif setting.to_s == 'pending'
+					example.metadata[:pending] ||=
+						"a configured database URI in #{TESTDB_ENV_VAR}"
+				else
+					fail "No database connection! " +
+					     "Ensure you have the #{TESTDB_ENV_VAR} ENV variable set to " +
+						 "the URI of an (empty) test database you have write permissions to."
+				end
+			else
+				example.run
+			end
+		end
+
+		super
+	end
+
+end # module Thingfish::Metastore::PgGraph::SpecHelpers
+
+
+### Mock with RSpec
+RSpec.configure do |c|
+	include Thingfish::SpecHelpers
+	include Thingfish::SpecHelpers::Constants
+
+	c.run_all_when_everything_filtered = true
+	c.filter_run :focus
+	# c.order = 'random'
+	c.mock_with( :rspec ) do |mock|
+		mock.syntax = :expect
+	end
+
+	c.include( Loggability::SpecHelpers )
+	c.include( Thingfish::SpecHelpers )
+	c.include( Thingfish::MetastorePGSpecHelpers )
+end
+
+# vim: set nosta noet ts=4 sw=4:
+