diff -r cba9fb39bcdb -r a38e6916504c spec/ezmlm/list/author_spec.rb
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/spec/ezmlm/list/author_spec.rb	Fri May 12 11:09:36 2017 -0700
@@ -0,0 +1,83 @@
+# vim: set nosta noet ts=4 sw=4 ft=rspec:
+
+require_relative '../../spec_helpers'
+
+
+describe Ezmlm::List::Author do
+
+	before( :all ) do
+		@listdir = make_listdir()
+	end
+
+	after( :all ) do
+		rm_r( @listdir )
+	end
+
+	let( :list ) do
+		Ezmlm::List.new( @listdir )
+	end
+
+	let ( :author_id ) { "idijebinbeadbfecldlb" }
+
+
+	context 'instantiating' do
+
+		it 'raises error if provided an unknown list object' do
+			expect {
+				described_class.new( true, 1 )
+			}.to raise_error( ArgumentError, /unknown list/i )
+		end
+
+		it 'raises error if thread indexing is disabled' do
+			expect( list ).to receive( :threaded? ).and_return( false )
+			expect {
+				described_class.new( list, author_id )
+			}.to raise_error( RuntimeError, /indexing is not enabled/i )
+		end
+
+		it 'raises error if passed a malformed author ID' do
+			expect {
+				described_class.new( list, 'whatever' )
+			}.to raise_error( ArgumentError, /malformed/i )
+		end
+
+		it 'raises error when unable to read index file' do
+			allow( list ).to receive( :listdir ).and_return( Pathname('/nope') )
+			expect( list ).to receive( :threaded? ).and_return( true )
+			expect {
+				described_class.new( list, author_id )
+			}.to raise_error( RuntimeError, /unknown author/i )
+		end
+
+		it 'parses an author index from the archive' do
+			author = described_class.new( list, author_id  )
+			expect( author ).to be_a( Ezmlm::List::Author )
+		end
+
+		context 'an instance of' do
+
+			let( :author ) { described_class.new( list, author_id ) }
+
+			it 'knows the author name' do
+				expect( author.name ).to match( /Jessy Labadie/i )
+			end
+
+			it 'holds messages that belong to the author' do
+				expect( author.messages.size ).to be( 1 )
+				expect( author.first.subject ).to match( /interface/i )
+				expect( author.first.body.to_s ).to match( /protocol/i )
+				expect( author.first.from.first ).to match( /karianne@example.net/i )
+			end
+
+			it 'holds threads that the author has participated in' do
+				expect( author.threads.size ).to be( 1 )
+				expect( author.threads.first ).to eq( 'caaabjkbghlcbokpfpeg' )
+			end
+
+			it 'is enumerable' do
+				expect( author.any?{|m| m.id == 111 }).to be_truthy
+			end
+		end
+	end
+end
+