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/tasks/scheduletask_spec.rb

@@ -0,0 +1,130 @@
+#!/usr/bin/env rspec -wfd
+# vim: set nosta noet ts=4 sw=4:
+
+require_relative '../../helpers'
+
+describe Symphony::Metronome::ScheduleTask do
+
+	let( :time ) { Time.at(1262376000) }
+	let( :db ) { double('sequel db handle') }
+	let( :actions ) { double('sequel dataset') }
+
+	before( :each ) do
+		allow( Symphony::Metronome::ScheduledEvent ).to receive( :db ).and_return( db )
+		allow( db ).to receive( :[] ).with( :metronome ).and_return( actions )
+		Timecop.freeze( time )
+	end
+
+	context 'creating a new event' do
+
+		let( :task ) { described_class.new(nil) }
+		let( :metadata ) {
+			{
+				:delivery_info => double( 'delivery info' ),
+				:properties    => double( 'properties' )
+			}
+		}
+
+		it 'fails with non-hash payloads' do
+			expect( metadata[:delivery_info] ).to receive( :routing_key ).
+				and_return( 'metronome.create' )
+
+			expect {
+				task.work( [], metadata )
+			}.to raise_error( ArgumentError, 'Invalid payload.' )
+		end
+
+		it 'fails without an expression argument' do
+			expect( metadata[:delivery_info] ).to receive( :routing_key ).
+				and_return( 'metronome.create' )
+
+			expect {
+				task.work( {}, metadata )
+			}.to raise_error( ArgumentError, 'Missing time expression.' )
+		end
+
+		it 'saves the event and seralized options to storage' do
+			allow( Process ).to receive( :ppid ).and_return( 12000 )
+			expect( metadata[:delivery_info] ).to receive( :routing_key ).
+				and_return( 'metronome.create' )
+
+			payload = {
+				'expression'       => 'at 2pm',
+				'excitement_level' => 12
+			}
+
+			expect( actions ).to receive( :insert ).with({
+				:created     => time,
+				:expression  => 'at 2pm',
+				:options     => '{"excitement_level":12}'
+			})
+			expect( Process ).to receive( :kill ).with( 'HUP', 12000 )
+
+			expect( task.work(payload, metadata) ).to be_truthy
+		end
+
+		it 'exits if it has become an orphaned process' do
+			expect( metadata[:delivery_info] ).to receive( :routing_key ).
+				and_return( 'metronome.create' )
+
+			payload = {
+				'expression'       => 'at 2pm',
+				'excitement_level' => 12
+			}
+
+			expect( actions ).to receive( :insert ).with({
+				:created     => time,
+				:expression  => 'at 2pm',
+				:options     => '{"excitement_level":12}'
+			})
+			expect( Process ).to_not receive( :kill )
+
+			# parent gone! init takes over.
+			allow( Process ).to receive( :ppid ).and_return( 1 )
+
+			expect { task.work( payload, metadata ) }.to raise_error( SystemExit )
+		end
+	end
+
+	context 'removing an existing event' do
+
+		let( :task ) { described_class.new(nil) }
+		let( :metadata ) {
+			{
+				:delivery_info => double( 'delivery info' ),
+				:properties    => double( 'properties' )
+			}
+		}
+
+		it 'removes rows matching the payload ID' do
+			allow( Process ).to receive( :ppid ).and_return( 12000 )
+			expect( metadata[:delivery_info] ).to receive( :routing_key ).
+				and_return( 'metronome.delete' )
+
+			payload = "44"
+			row = double( 'filtered dataaset' )
+			expect( row ).to receive( :delete )
+			expect( actions ).to receive( :filter ).with( :id => 44 ).and_return( row )
+			expect( Process ).to receive( :kill ).with( 'HUP', 12000 )
+
+			task.work( payload, metadata )
+		end
+
+		it 'exits if it has become an orphaned process' do
+			expect( metadata[:delivery_info] ).to receive( :routing_key ).
+				and_return( 'metronome.delete' )
+
+			payload = "44"
+			row = double( 'filtered dataaset' )
+			expect( row ).to receive( :delete )
+			expect( actions ).to receive( :filter ).with( :id => 44 ).and_return( row )
+			expect( Process ).to_not receive( :kill )
+
+			# parent gone! init takes over.
+			allow( Process ).to receive( :ppid ).and_return( 1 )
+
+			expect { task.work( payload, metadata ) }.to raise_error( SystemExit )
+		end
+	end
+end
+