Use CircleCI instead of TravisCI for automated builds

PR: #514

.circleci/config.yml

@@ -0,0 +1,79 @@
+version: 2.1
+
+jobs:
+  build:
+    parameters:
+      docker-image:
+        type: string
+      gemfile:
+        type: string
+    docker:
+      - image: << parameters.docker-image >>
+    environment:
+      MOCHA_OPTIONS=debug
+    steps:
+      - checkout
+      - run: ruby --version
+      - when:
+          condition:
+            equal: [ "ruby:1.9", << parameters.docker-image >>]
+          steps:
+            - run: gem update --system 2.7.8
+            - run: gem install bundler -v1.17.3
+      - when:
+          condition:
+            equal: [ "jruby:latest", << parameters.docker-image >>]
+          steps:
+            - run: apt-get update
+            - run: apt-get install -y git
+      - run: gem --version
+      - run: bundle --version
+      - run: bundle install --gemfile=<< parameters.gemfile >>
+      - when:
+          condition:
+            equal: [ "Gemfile", << parameters.gemfile >>]
+          steps:
+            - run: bundle exec rake test
+      - when:
+          condition:
+            matches:
+              pattern: ".*minitest.*"
+              value: << parameters.gemfile >>
+          steps:
+            - run: MOCHA_RUN_INTEGRATION_TESTS=minitest bundle exec --gemfile=<< parameters.gemfile >> rake test
+      - when:
+          condition:
+            matches:
+              pattern: ".*test-unit.*"
+              value: << parameters.gemfile >>
+          steps:
+            - run: MOCHA_RUN_INTEGRATION_TESTS=test-unit bundle exec --gemfile=<< parameters.gemfile >> rake test
+
+workflows:
+  build-all:
+    jobs:
+      - build:
+          matrix:
+            parameters:
+              docker-image:
+                - ruby:1.9
+                - ruby:2.0
+                - ruby:2.1
+                - ruby:2.2
+                - ruby:2.3
+                - ruby:2.4
+                - ruby:2.5
+                - ruby:2.6
+                - ruby:2.7
+                - ruby:latest
+                - jruby:latest
+              gemfile:
+                - Gemfile
+      - build:
+          matrix:
+            parameters:
+              docker-image:
+                - ruby:latest
+              gemfile:
+                - gemfiles/Gemfile.minitest.latest
+                - gemfiles/Gemfile.test-unit.latest

CONTRIBUTING.md

@@ -3,5 +3,5 @@
 * Make your changes in a branch.
 * Add/modify/remove tests as appropriate.
 * Open a pull request based on a branch on your fork.
-* Wait for your pull request build to pass on [Travis CI](https://travis-ci.com/github/freerange/mocha/pull_requests).
+* Wait for your pull request build to pass on [Circle CI](https://app.circleci.com/pipelines/github/freerange/mocha).
 * Pull requests with failing tests will not be accepted.

README.md

@@ -1,4 +1,4 @@
-## Mocha [![Build Status](https://travis-ci.com/freerange/mocha.svg?branch=main)](https://travis-ci.com/github/freerange/mocha) [![Gem Version](https://badge.fury.io/rb/mocha.svg)](http://badge.fury.io/rb/mocha) [![SemVer](https://api.dependabot.com/badges/compatibility_score?dependency-name=mocha&package-manager=bundler&version-scheme=semver)](https://dependabot.com/compatibility-score.html?dependency-name=mocha&package-manager=bundler&version-scheme=semver)
+## Mocha [![CircleCI status of freerange/mocha](https://circleci.com/gh/freerange/mocha.svg?style=shield)](https://app.circleci.com/pipelines/github/freerange/mocha) [![Gem Version](https://badge.fury.io/rb/mocha.svg)](http://badge.fury.io/rb/mocha) [![SemVer](https://api.dependabot.com/badges/compatibility_score?dependency-name=mocha&package-manager=bundler&version-scheme=semver)](https://dependabot.com/compatibility-score.html?dependency-name=mocha&package-manager=bundler&version-scheme=semver)
 
 ### Description
 
@@ -323,7 +323,7 @@ See this [list of contributors](https://github.com/freerange/mocha/graphs/contri
 * Update the RELEASE.md file with a summary of changes
 * Bump the version in `lib/mocha/version.rb`
 * Commit & push to GitHub
-* Check Travis CI build is passing - https://travis-ci.com/github/freerange/mocha
+* Check CircleCI build is passing - https://app.circleci.com/pipelines/github/freerange/mocha
 
 * Sign in to Google Analytics - https://analytics.google.com/analytics/web/
 * Find the web property ID for floehopper (625523) > Mocha Documentation (UA-625523-7)