build: output coverage report using xcov-danger SDKCF-1159 (#14)

- use Gemfile for dependencies
- only call the fastlane coverage lane when running locally because on travis Danger will be run as a separate script command after fastlane
- add vendor dir to excluded lint files because travis adds all its bundler dependencies to a vendor dir within the repo root

.swiftlint.yml

@@ -15,3 +15,4 @@ identifier_name:
 excluded:
   - Pods
   - RemoteConfigPlayground.playground
+  - vendor

.travis.yml

@@ -4,15 +4,16 @@ xcode_scheme: Tests
 osx_image: xcode10.2
 
 before_install:
-- gem install xcov
-- gem update fastlane cocoapods xcov --no-document
+- bundle install
+- gem update fastlane cocoapods --no-document
 - pod repo update
 
-script: fastlane ci
+script:
+- fastlane ci
+- bundle exec danger
 
 after_success:
   # generate docs
-- gem install jazzy
 - jazzy --xcodebuild-arguments -scheme,Tests --module RRemoteConfig --source-directory RRemoteConfig --podspec RRemoteConfig.podspec --exclude RRemoteConfig/Loader.swift --readme README.md
 
 deploy:

Dangerfile

@@ -0,0 +1,13 @@
+# Warn when there is a big PR
+warn("Big PR") if git.lines_of_code > 500
+
+xcov.report(
+  workspace: 'RRemoteConfig.xcworkspace',
+  scheme: 'Tests',
+  output_directory: 'artifacts/unit-tests/coverage',
+  source_directory: 'RRemoteConfig',
+  json_report: true,
+  include_targets: 'RRemoteConfig.framework',
+  include_test_targets: false,
+  minimum_coverage_percentage: 70.0
+)

Gemfile

@@ -0,0 +1,8 @@
+source 'https://rubygems.org'
+
+gem "cocoapods"
+gem "xcov"
+gem "jazzy"
+gem "danger"
+gem "danger-xcov"
+gem "xcode-install"

fastlane/Fastfile

@@ -6,6 +6,8 @@ default_platform(:ios)
 platform :ios do
   desc "Build everything"
   lane :ci do |options|
+    xcversion(version: "~> 10.2")
+
     swiftlint(
       strict: true,
       ignore_exit_status: false
@@ -22,7 +24,12 @@ platform :ios do
       output_types: 'json-compilation-database,html,junit',
       output_files: 'compile_commands.json,report.html,report.junit')
 
-    coverage
+    if is_ci?
+      puts "Running on CI, coverage report will be generated by Danger"
+    else
+      puts "Running locally so call coverage lane"
+      coverage
+    end
   end
 
   desc "Set up environment"
@@ -41,18 +48,9 @@ platform :ios do
 
   desc "Generate code coverage"
   lane :coverage do |options|
-    xcov(
-      workspace: 'RRemoteConfig.xcworkspace',
-      scheme: 'Tests',
-      output_directory: 'artifacts/unit-tests/coverage',
-      source_directory: 'RRemoteConfig',
-      json_report: true,
-      include_targets: 'RRemoteConfig.framework',
-      include_test_targets: false,
-      skip_slack: true,
-      disable_coveralls: false,
-      minimum_coverage_percentage: 70.0
-    )
+    Dir.chdir("..") do
+      sh("bundle exec danger dry_run")
+    end
   end
 end
 # vim:syntax=ruby:et:sts=2:sw=2:ts=2:ff=unix: