Add some basic spec structure

.rspec

@@ -0,0 +1,3 @@
+--color
+--require spec_helper
+--format d

Rakefile

@@ -1,9 +1,9 @@
-# require 'rspec/core/rake_task'
+require 'rspec/core/rake_task'
 
 task :default => :test
 task :spec => :test
 
-# RSpec::Core::RakeTask.new(:test)
+RSpec::Core::RakeTask.new(:test)
 
 task :build do
   sh 'gem build *.gemspec'

pry-timetravel.gemspec

@@ -12,7 +12,7 @@ Gem::Specification.new do |s|
   s.add_dependency 'pry'
 
   s.add_development_dependency 'rake'
-  #  s.add_development_dependency 'rspec'
+  s.add_development_dependency 'rspec'
   #  s.add_development_dependency 'yard'
   #  s.add_development_dependency 'redcarpet'
   #  s.add_development_dependency 'capybara'

spec/commands_spec.rb

@@ -1,11 +1,77 @@
 require './spec/spec_helper'
+require 'pty'
+require 'expect'
 
-describe "pry-timetravel commands" do
-  describe "checkpoint" do
-    it "forks a child"
+# pry_timetravel_cmd = "pry -f -e 'Pry.config.correct_indent=false;' --no-pager --no-history --noprompt -s timetravel"
+pry_timetravel_cmd = "TERM=dumb pry -f --no-color --no-pager --no-history --noprompt -s timetravel"
+
+def strip_ansi(str)
+  str.gsub(/\e\[[0-9;]*[a-zA-Z]/, '')
+end
+
+def get_line(pry_read)
+  # puts "ignore1: [#{strip_ansi(pry_read.gets.chomp)}]"
+  # puts "ignore2: [#{strip_ansi(pry_read.gets.chomp)}]"
+  result = pry_read.gets.chomp
+  puts "result: [#{result}]"
+  result
+  result = pry_read.gets.chomp
+  puts "result: [#{result}]"
+  result
+  # strip_ansi(pry_read.gets.chomp)
+  # strip_ansi(result)
+end
+
+
+describe "pry-timetravel" do
+  it "starts with no snapshots" do
+    PTY.spawn(pry_timetravel_cmd) do |reader, writer|
+      writer.puts("snap --list")
+      found = reader.expect(/No snapshots/)
+      expect(found).to be_truthy
+    end
+  end
+  it "creates one snapshot" do
+    PTY.spawn(pry_timetravel_cmd) do |reader, writer, cmd_pid|
+      writer.puts("snap")
+      writer.puts("snap --list")
+
+      all1, pid1 = reader.expect(/^(\d+) <main> 1/)
+      all2, pid2 = reader.expect(/^  (\d+) <main> 1 \*\*\*/)
+
+      expect(pid1.to_i).to be > 0
+      expect(pid2.to_i).to be > 0
+
+      pid_list = `ps h -o pid,ppid -g #{cmd_pid}`.split(/\n/)
+      expect(pid_list.count).to be == 4
+    end
   end
-  describe "timetravel" do
-    it "reinvokes the saved checkpoint and kills itself"
+  it "Can time-travel to before a var existed" do
+    PTY.spawn(pry_timetravel_cmd) do |reader, writer, cmd_pid|
+      writer.puts("snap")
+      writer.puts("x = 7")
+      reader.expect(/^=> 7/,1)
+      writer.puts("x")
+      reader.expect(/^=> 7/,1)
+      writer.puts("back")
+      writer.puts("x")
+      result = reader.expect(/^NameError: undefined local variable or method `x' for main:Object/,1)
+      expect(result).to be_truthy
+    end
   end
+  # it "creates one snapshot"  # it "forks a child" do
+  #   PTY.spawn(pry_timetravel_cmd) do |pry_read, pry_write, pid|
+  #     pry_write.puts "5+5"
+  #     expect(strip_ansi(pry_read.gets.chomp)).to eq("5+5") # input
+  #     expect(strip_ansi(pry_read.gets.chomp)).to eq("5+5") # echo
+  #     expect(strip_ansi(pry_read.gets.chomp)).to eq("5+5=> 10")
+  #   end
+  # end
+  # it "forks a child" do
+  #   ReplTester.start do
+  #     input '5+5'
+  #     output '10'
+  #   end
+  # end
 end
 

spec/spec_helper.rb

@@ -1,6 +1,25 @@
 require 'rspec'
-require 'rspec/autorun'
+require './lib/pry-timetravel'
 
-require 'pry/test/helper'
+#require 'pry/test/helper'
 
-require './lib/pry-timetravel'
+# in case the tests call reset_defaults, ensure we reset them to
+# amended (test friendly) values
+# class << Pry
+#   alias_method :orig_reset_defaults, :reset_defaults
+#   def reset_defaults
+#     orig_reset_defaults
+
+#     Pry.config.color = false
+#     Pry.config.pager = false
+#     Pry.config.should_load_rc      = false
+#     Pry.config.should_load_local_rc= false
+#     Pry.config.should_load_plugins = false
+#     Pry.config.history.should_load = false
+#     Pry.config.history.should_save = false
+#     Pry.config.correct_indent      = false
+#     Pry.config.hooks               = Pry::Hooks.new
+#     Pry.config.collision_warning   = false
+#   end
+# end
+# Pry.reset_defaults