Use GitHub Actions for CI.

Test on a range of supported Ruby and JRuby versions for TZInfo v1 and
v2, head versions of Ruby and JRuby and the head version of TZInfo.

TZInfo v1 supports Ruby 1.8.7. TZInfo v1 and v2 support JRuby 1.7.
Neither of these versions are tested due to incompatibilies with old
timestamps.

.github/workflows/tests.yml

@@ -0,0 +1,73 @@
+name: Tests
+
+on: [push, pull_request]
+
+jobs:
+  test:
+    name: ${{ matrix.ruby }} with TZInfo ${{ matrix.tzinfo }}${{ matrix.name_suffix }}
+    strategy:
+      matrix:
+        ruby: ['1.9.3', '3.0', jruby-9.0, jruby-9.3]
+        tzinfo: [v1, v2]
+        name_suffix: ['']
+        experimental: [false]
+        include:
+          - ruby: '3.0'
+            tzinfo: head
+            name_suffix: ' (experimental)'
+            experimental: true
+          - ruby: head
+            tzinfo: v1
+            name_suffix: ' (experimental)'
+            experimental: true
+          - ruby: jruby-head
+            tzinfo: v1
+            name_suffix: ' (experimental)'
+            experimental: true
+          - ruby: head
+            tzinfo: v2
+            name_suffix: ' (experimental)'
+            experimental: true
+          - ruby: jruby-head
+            tzinfo: v2
+            name_suffix: ' (experimental)'
+            experimental: true
+      fail-fast: false
+    runs-on: ubuntu-20.04
+    continue-on-error: ${{ matrix.experimental }}
+    env:
+      TZINFO_GEM: ${{ matrix.tzinfo }}
+    steps:
+      - uses: actions/checkout@v2
+      - if: startsWith(matrix.ruby, 'jruby-9.0')
+        uses: philr/setup-ruby@legacy-v1
+        with:
+          ruby-version: ${{ matrix.ruby }}
+          bundler-cache: true
+      - if: ${{ !startsWith(matrix.ruby, 'jruby-9.0') }}
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.ruby }}
+          bundler-cache: true
+      - run: ruby --version
+      - run: gem --version
+      - run: bundle --version
+      - id: determine_tzdata_version
+        name: Determine tzdata version
+        run: echo "::set-output name=tzdata_version::`ruby -r bundler/setup -r tzinfo/data -e 'puts TZInfo::Data::Version::TZDATA'`"
+      - id: determine_os_version
+        name: Determine OS version
+        run: |
+          echo "::set-output name=os::`lsb_release -si`"
+          echo "::set-output name=os_version::`lsb_release -sr`"
+      - name: Cache tzdb
+        uses: actions/cache@v2
+        with:
+          path: tzdb
+          key: tzdb-${{ steps.determine_os_version.outputs.os }}-${{ steps.determine_os_version.outputs.os_version }}-${{ steps.determine_tzdata_version.outputs.tzdata_version }}
+          restore-keys: |
+            tzdb-${{ steps.determine_os_version.outputs.os }}-${{ steps.determine_os_version.outputs.os_version }}-
+      - run: bundle exec rake test
+        env:
+          TESTOPTS: --verbose
+      - run: bundle exec rake tzdb:clean:other

Gemfile

@@ -2,6 +2,16 @@ source "https://rubygems.org"
 
 gemspec
 
+tzinfo_gem = ENV['TZINFO_GEM']
+
+if tzinfo_gem == 'v1'
+  gem 'tzinfo', '~> 1'
+elsif tzinfo_gem == 'v2'
+  gem 'tzinfo', '~> 2'
+elsif tzinfo_gem == 'head'
+  gem 'tzinfo', :git => 'https://github.com/tzinfo/tzinfo.git'
+end
+
 group :test do
   gem 'rake'
   gem 'minitest', '~> 5.0'

README.md

@@ -1,7 +1,7 @@
 TZInfo::Data - Timezone Data for TZInfo
 =======================================
 
-[![RubyGems](https://img.shields.io/gem/v/tzinfo-data)](https://rubygems.org/gems/tzinfo-data)
+[![RubyGems](https://img.shields.io/gem/v/tzinfo-data)](https://rubygems.org/gems/tzinfo-data) [![Tests](https://github.com/tzinfo/tzinfo-data/workflows/Tests/badge.svg?branch=master&event=push)](https://github.com/tzinfo/tzinfo-data/actions?query=workflow%3ATests+branch%3Amaster+event%3Apush)
 
 TZInfo::Data is the public domain [IANA Time Zone Database](https://www.iana.org/time-zones)
 packaged as a set of Ruby modules for use with [TZInfo](https://tzinfo.github.io).

Rakefile

@@ -415,7 +415,7 @@ directory tzdb_path => TZDB_DIR
       attempt = 1
       begin
         puts "Downloading #{url}"
-        URI.open(url) do |http|
+        URI.parse(url).open do |http|
           File.open(temp_path, 'wb') do |temp_file|
             copy_stream(http, temp_file)
           end