Remove warnings

When running tests locally, multiple warnings were being emitted. A lot
of these warnings have to do with the fact that we are overriding core
methods in RSpec, and whenever you override a method, Ruby feels the
need to inform you. To get around this, we need to use the same trick
that we already use for AugmentedMatcher: we create a module on the fly
and `prepend` it to the class or module in question. Sometimes we might
even need to `prepend` to the singleton class. Also, this commit adds
WarningsLogger so that we can track when this happens again.

Author: mcmire

Gemfile

@@ -10,5 +10,6 @@ gem "pry-byebug", platform: :mri
 gem "pry-nav", platform: :jruby
 gem "rake"
 gem "rubocop"
+gem "warnings_logger"
 
 gemspec

Rakefile

@@ -4,7 +4,9 @@ require_relative "support/current_bundle"
 
 begin
   require "rspec/core/rake_task"
-  RSpec::Core::RakeTask.new(:spec)
+  RSpec::Core::RakeTask.new(spec: :before_spec) do |config|
+    config.verbose = true
+  end
 rescue LoadError
   task :spec do
     appraisal = SuperDiff::CurrentBundle.instance.latest_appraisal
@@ -22,3 +24,7 @@ task :default do
     exec "appraisal install && appraisal #{appraisal.name} rake --trace"
   end
 end
+
+task :before_spec do
+  FileUtils.rm_rf(File.expand_path("./spec/tmp", __dir__))
+end

gemfiles/no_rails_rspec_gte_3_10.gemfile

@@ -8,6 +8,7 @@ gem "pry-byebug", platform: :mri
 gem "pry-nav", platform: :jruby
 gem "rake"
 gem "rubocop"
+gem "warnings_logger"
 gem "rspec", ">= 3.10", "< 4"
 
 gemspec path: "../"

gemfiles/no_rails_rspec_gte_3_10.gemfile.lock

@@ -63,6 +63,7 @@ GEM
     thor (1.0.1)
     trollop (1.16.2)
     unicode-display_width (1.7.0)
+    warnings_logger (0.1.1)
 
 PLATFORMS
   ruby
@@ -76,6 +77,7 @@ DEPENDENCIES
   rspec (>= 3.10, < 4)
   rubocop
   super_diff!
+  warnings_logger
 
 BUNDLED WITH
    2.1.4

gemfiles/no_rails_rspec_lt_3_10.gemfile

@@ -8,6 +8,7 @@ gem "pry-byebug", platform: :mri
 gem "pry-nav", platform: :jruby
 gem "rake"
 gem "rubocop"
+gem "warnings_logger"
 gem "rspec", "< 3.10"
 
 gemspec path: "../"

gemfiles/no_rails_rspec_lt_3_10.gemfile.lock

@@ -63,6 +63,7 @@ GEM
     thor (1.0.1)
     trollop (1.16.2)
     unicode-display_width (1.7.0)
+    warnings_logger (0.1.1)
 
 PLATFORMS
   ruby
@@ -76,6 +77,7 @@ DEPENDENCIES
   rspec (< 3.10)
   rubocop
   super_diff!
+  warnings_logger
 
 BUNDLED WITH
    2.1.4

gemfiles/rails_5_0_rspec_gte_3_10.gemfile

@@ -8,6 +8,7 @@ gem "pry-byebug", platform: :mri
 gem "pry-nav", platform: :jruby
 gem "rake"
 gem "rubocop"
+gem "warnings_logger"
 gem "activerecord-jdbcsqlite3-adapter", platform: :jruby
 gem "jdbc-sqlite3", platform: :jruby
 gem "activerecord", "~> 5.0.0"

gemfiles/rails_5_0_rspec_gte_3_10.gemfile.lock

@@ -123,6 +123,7 @@ GEM
     tzinfo (1.2.7)
       thread_safe (~> 0.1)
     unicode-display_width (1.7.0)
+    warnings_logger (0.1.1)
 
 PLATFORMS
   ruby
@@ -145,6 +146,7 @@ DEPENDENCIES
   rubocop
   sqlite3 (~> 1.3.6)
   super_diff!
+  warnings_logger
 
 BUNDLED WITH
    2.1.4

gemfiles/rails_5_0_rspec_lt_3_10.gemfile

@@ -8,6 +8,7 @@ gem "pry-byebug", platform: :mri
 gem "pry-nav", platform: :jruby
 gem "rake"
 gem "rubocop"
+gem "warnings_logger"
 gem "activerecord-jdbcsqlite3-adapter", platform: :jruby
 gem "jdbc-sqlite3", platform: :jruby
 gem "activerecord", "~> 5.0.0"

gemfiles/rails_5_0_rspec_lt_3_10.gemfile.lock

@@ -123,6 +123,7 @@ GEM
     tzinfo (1.2.7)
       thread_safe (~> 0.1)
     unicode-display_width (1.7.0)
+    warnings_logger (0.1.1)
 
 PLATFORMS
   ruby
@@ -145,6 +146,7 @@ DEPENDENCIES
   rubocop
   sqlite3 (~> 1.3.6)
   super_diff!
+  warnings_logger
 
 BUNDLED WITH
    2.1.4