Use danger to report test results in PR comment

.buildkite/commands/danger.sh

@@ -0,0 +1,12 @@
+#!/bin/bash -eu
+
+echo "--- :rubygems: Setting up Gems"
+install_gems
+
+echo "--- :junit: Downloading junit reports"
+buildkite-agent artifact download --step unit-tests "build/results/report.junit" ./unit-tests.junit
+buildkite-agent artifact download --step ui-tests-iphone "build/results/report.junit" ./ui-tests-iphone.junit
+buildkite-agent artifact download --step ui-tests-ipad "build/results/report.junit" ./ui-tests-ipad.junit
+
+echo "--- :no_entry_sign: Run Danger"
+bundle exec danger --fail-on-errors=true

.buildkite/pipeline.yml

@@ -52,6 +52,7 @@ steps:
   # Run Unit Tests
   #################
   - label: "🔬 Unit Tests"
+    key: "unit-tests"
     command: ".buildkite/commands/run-unit-tests.sh"
     depends_on: "build"
     env: *common_env
@@ -72,6 +73,7 @@ steps:
   - group: "🔬 UI Tests"
     steps:
       - label: "🔬 UI Tests (iPhone)"
+        key: "ui-tests-iphone"
         command: .buildkite/commands/run-ui-tests.sh 'iPhone SE (3rd generation)'
         depends_on: "build"
         env: *common_env
@@ -87,6 +89,7 @@ steps:
             if: build.state == "failed" && build.branch == "trunk"
 
       - label: "🔬 UI Tests (iPad)"
+        key: "ui-tests-ipad"
         command: .buildkite/commands/run-ui-tests.sh "iPad Air (5th generation)"
         depends_on: "build"
         env: *common_env
@@ -124,5 +127,9 @@ steps:
       # That is, it outwardly only mentions RuboCop, not Danger
       - label: ":rubocop: Lint Ruby Tooling"
         command: .buildkite/commands/rubocop-via-danger.sh
+        depends_on:
+          - unit-tests
+          - ui-tests-iphone
+          - ui-tests-ipad
         env: *common_env
         plugins: *common_plugins

Dangerfile

@@ -2,3 +2,8 @@
 
 github.dismiss_out_of_range_messages
 rubocop.lint inline_comment: true, fail_on_inline_comment: true
+
+%w[unit-tests ui-tests-iphone ui-tests-ipad].each do |file|
+    junit.parse "#{file}.junit"
+    junit.report
+end

Gemfile

@@ -6,6 +6,7 @@ gem 'cocoapods', '~> 1.11'
 gem 'commonmarker'
 gem 'danger', '~> 8.6'
 gem 'danger-rubocop', '~> 0.10'
+gem 'danger-junit', '~> 1.0'
 gem 'dotenv'
 gem 'fastlane', '~> 2.174'
 gem 'fastlane-plugin-appcenter', '~> 1.8'

Gemfile.lock

@@ -101,6 +101,9 @@ GEM
       no_proxy_fix
       octokit (~> 4.7)
       terminal-table (>= 1, < 4)
+    danger-junit (1.0.2)
+      danger (> 2.0)
+      ox (~> 2.0)
     danger-rubocop (0.10.0)
       danger
       rubocop (~> 1.0)
@@ -290,6 +293,7 @@ GEM
     options (2.3.2)
     optparse (0.1.1)
     os (1.1.4)
+    ox (2.14.11)
     parallel (1.22.1)
     parser (3.1.2.0)
       ast (~> 2.4.1)
@@ -382,6 +386,7 @@ DEPENDENCIES
   cocoapods (~> 1.11)
   commonmarker
   danger (~> 8.6)
+  danger-junit (~> 1.0)
   danger-rubocop (~> 0.10)
   dotenv
   fastlane (~> 2.174)
@@ -396,4 +401,4 @@ DEPENDENCIES
   xcpretty-travis-formatter
 
 BUNDLED WITH
-   2.3.23
+   2.3.22