Lots of async changes

spec/spec_helper.rb

@@ -2,6 +2,39 @@ require 'pry'
 require 'rspec/wait'
 require 'terminal_session'
 
+RSpec.shared_context 'terminal session' do
+  let(:term_opts) { {} }
+  let(:session) { TerminalSession.new(term_opts) }
+  let(:before_sourcing) { -> {} }
+  let(:options) { [] }
+
+  around do |example|
+    before_sourcing.call
+
+    session.run_command((['source zsh-autosuggestions.zsh'] + options).join('; '))
+    session.clear_screen
+
+    example.run
+
+    session.destroy
+  end
+
+  def with_history(*commands, &block)
+    session.run_command('fc -p')
+
+    commands.each do |c|
+      c.respond_to?(:call) ? c.call : session.run_command(c)
+    end
+
+    session.clear_screen
+
+    yield block
+
+    session.send_keys('C-c')
+    session.run_command('fc -P')
+  end
+end
+
 RSpec.configure do |config|
   config.expect_with :rspec do |expectations|
     expectations.include_chain_clauses_in_custom_matcher_descriptions = true
@@ -12,4 +45,6 @@ RSpec.configure do |config|
   end
 
   config.wait_timeout = 2
+
+  config.include_context 'terminal session'
 end