Add danger

.travis.yml

@@ -18,6 +18,9 @@ before_install:
 - brew outdated carthage || brew upgrade carthage
 - bundle install
 
+before_script:
+- bundle exec danger
+
 script:
 - .scripts/build
 

Dangerfile

@@ -0,0 +1,19 @@
+
+has_source_changes = !git.modified_files.grep(/Sources.*\.swift/).empty? || !git.added_files.grep(/Sources.*\.swift/).empty?
+has_tests_changes = !git.modified_files.grep(/Sources\/TabmanTests.*\.swift/).empty? || !git.added_files.grep(/Sources\/TabmanTests.*\.swift/).empty?
+
+# Make it more obvious that a PR is a work in progress and shouldn't be merged yet
+warn("PR is classed as Work in Progress") if github.pr_title.include? "[WIP]"
+
+# Warn when there is a big PR
+warn("This PR might be a little too big, consider breaking it up.") if git.lines_of_code > 500
+
+# Require PR description
+warn "Please provide a summary in the PR description, it makes it easier to understand!" if github.pr_body.length < 5
+
+# Check for source changes and prompt for test updates if non added.
+if (has_source_changes && ! has_tests_changes)
+    warn("Looks like you changed some source files, should there have been some tests added?")
+end
+
+swiftlint.lint_files

Gemfile

@@ -1,5 +1,7 @@
 
 source 'https://rubygems.org'
 
-gem "fastlane"
-gem "cocoapods"
+gem 'fastlane'
+gem 'cocoapods'
+gem 'danger'
+gem 'danger-swiftlint'