Trying to fix the failure reporting

.rubocop.yml

@@ -4,6 +4,9 @@ AllCops:
   TargetRubyVersion: 2.6
   NewCops: enable
 
+Gemspec/DevelopmentDependencies:
+  EnforcedStyle: gemspec
+
 Layout/LineLength:
   Max: 100
 

README.md

@@ -131,6 +131,10 @@ After checking out the repo, run `bin/setup` to install dependencies. Then, run
 
 To install this gem onto your local machine, run `bundle exec rake install`. To release a new version, update the version number in `version.rb`, and then run `bundle exec rake release` to create a git tag for the version, push git commits and tags, and push the `.gem` file to [rubygems.org](https://rubygems.org).
 
+## Alternatives
+
+* [rspec-parameterized](https://github.com/tomykaira/rspec-parameterized)
+
 ## Elsewhere on the web
 
 Links to other places on the web where this projects exists:

Rakefile

@@ -2,6 +2,8 @@
 
 require 'bundler/gem_tasks'
 require 'rspec/core/rake_task'
+require 'cucumber'
+require 'cucumber/rake/task'
 require 'rubocop/rake_task'
 require 'bundler/audit/task'
 require 'pathname'
@@ -12,6 +14,10 @@ RSpec::Core::RakeTask.new(:spec) do |task|
   task.rspec_opts = '--warnings'
 end
 
+Cucumber::Rake::Task.new do |task|
+  task.cucumber_opts = '--publish-quiet'
+end
+
 RuboCop::RakeTask.new(:rubocop) do |task|
   rubocop_report_pathname =
     Pathname(Rake.application.original_dir).join('tmp', 'rubocop.txt')
@@ -47,4 +53,4 @@ task 'bundle:outdated' do
   sh("bundle outdated --only-explicit | tee #{bundle_outdated_report_pathname}")
 end
 
-task default: %i[spec rubocop bundle:audit license_finder]
+task default: %i[spec cucumber rubocop bundle:audit license_finder]

features/step_definitions/additional_cli_steps.rb

@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+When /^I run rspec( with the documentation option)?$/ do |documentation|
+  rspec_its_gem_location = File.expand_path('../../../lib/rspec/tabular', __FILE__)
+  require_option = "--require #{rspec_its_gem_location}"
+  format_option = documentation ? "--format documentation" : ""
+  rspec_command = ['rspec', require_option, format_option, 'example_spec.rb'].join(' ')
+  step "I run `#{rspec_command}`"
+end

features/support/env.rb

@@ -0,0 +1,3 @@
+# frozen_string_literal: true
+
+require 'aruba/cucumber'

features/support/tabular.feature

@@ -0,0 +1,65 @@
+# frozen_string_literal: true
+
+Feature: Specify examples as tables of inputs and expectations
+
+Scenario: A passing tabular spec
+  Given a file named "example_spec.rb" with:
+    """ruby
+    class TestModel
+      def method(value1, value2)
+        "result:#{value1}:#{value2}"
+      end
+    end
+    describe TestModel do
+      subject(:test_model) { described_class.new }
+
+      describe '#method' do
+        subject { test_model.method(input1, input2) }
+
+        inputs  :input1, :input2
+        it_with :value1, :value2, 'result:value1:value2'
+        it_with(:value3, :value4) { is_expected.to eq('result:value3:value4') }
+
+      end
+    end
+    """
+  When I run rspec with the documentation option
+  Then the output should contain:
+    """
+    TestModel
+      #method
+        with {:input1=>:value1, :input2=>:value2}
+          is expected to eq "result:value1:value2"
+        with {:input1=>:value3, :input2=>:value4}
+          is expected to eq "result:value3:value4"
+    """
+
+Scenario: A failing tabular spec
+  Given a file named "example_spec.rb" with:
+    """ruby
+    class TestModel
+      def method(value1, value2)
+        "result:#{value1}:#{value2}"
+      end
+    end
+    describe TestModel do
+      subject(:test_model) { described_class.new }
+
+      describe '#method' do
+        subject { test_model.method(input1, input2) }
+
+        inputs  :input1, :input2
+        it_with :value1, :value2, 'result:value1:foobar'
+        it_with(:value3, :value4) { is_expected.to eq('result:value3:deadbeef') }
+      end
+    end
+    """
+  When I run rspec with the documentation option
+  Then the output should contain:
+    """
+    Failure/Error: DEFAULT_FAILURE_NOTIFIER = lambda { |failure, _opts| raise failure }
+    """
+  Then the output should contain:
+    """
+    Failure/Error: it_with(:value3, :value4) { is_expected.to eq('result:value3:deadbeef') }
+    """

rspec-tabular.gemspec

@@ -27,7 +27,9 @@ Gem::Specification.new do |spec|
 
   spec.add_runtime_dependency     'rspec-core', '>= 2.99.0'
 
+  spec.add_development_dependency 'aruba',      '~> 2.0'
   spec.add_development_dependency 'bundler',    '~> 2.0'
+  spec.add_development_dependency 'cucumber',   '~> 8.0'
   spec.add_development_dependency 'rake',       '~> 13.0'
   spec.add_development_dependency 'rspec',      '~> 3.5'