Commit the pile of initial work. Largely taken from company internal

repos, allowed to be newly released.  Portions already in production,
coverage still needs to be boosted.  Enjoy.

FossilOrigin-Name: 0f17fa483f55467bdf9e8f99dace58e6a90f5a8a7e595bdd79dfda5c92d16b7f

spec/symphony/metronome_spec.rb

@@ -0,0 +1,66 @@
+
+#!/usr/bin/env rspec
+
+require_relative '../helpers'
+
+
+describe Symphony::Metronome do
+
+	before( :each ) do
+		ENV.delete( 'METRONOME_CONFIG' )
+	end
+
+
+	it "will load a default config file if none is specified" do
+		config_object = double( "Configurability::Config object" )
+		expect( Configurability ).to receive( :gather_defaults ).
+			and_return( {} )
+		expect( Configurability::Config ).to receive( :load ).
+			with( described_class::DEFAULT_CONFIG_FILE, {} ).
+			and_return( config_object )
+		expect( config_object ).to receive( :install )
+
+		described_class.load_config
+	end
+
+
+	it "will load a config file given in an environment variable if none is specified" do
+		ENV['METRONOME_CONFIG'] = '/usr/local/etc/config.yml'
+
+		config_object = double( "Configurability::Config object" )
+		expect( Configurability ).to receive( :gather_defaults ).
+			and_return( {} )
+		expect( Configurability::Config ).to receive( :load ).
+			with( '/usr/local/etc/config.yml', {} ).
+			and_return( config_object )
+		expect( config_object ).to receive( :install )
+
+		described_class.load_config
+	end
+
+
+	it "will load a config file and install it if one is given" do
+		config_object = double( "Configurability::Config object" )
+		expect( Configurability ).to receive( :gather_defaults ).
+			and_return( {} )
+		expect( Configurability::Config ).to receive( :load ).
+			with( 'a/configfile.yml', {} ).
+			and_return( config_object )
+		expect( config_object ).to receive( :install )
+
+		described_class.load_config( 'a/configfile.yml' )
+	end
+
+
+	it "will override default values when loading the config if they're given" do
+		config_object = double( "Configurability::Config object" )
+		expect( Configurability ).to_not receive( :gather_defaults )
+		expect( Configurability::Config ).to receive( :load ).
+			with( 'a/different/configfile.yml', {database: {dbname: 'test'}} ).
+			and_return( config_object )
+		expect( config_object ).to receive( :install )
+
+		described_class.load_config( 'a/different/configfile.yml', database: {dbname: 'test'} )
+	end
+end
+