Adds more ruby versions to Travis (#54)

This does not promise that we will support 1.9.3 in all current
or future releases. 1.9.3 is dead and you should upgrade to a
supported Ruby release.

- This PR switches webmock versions depending on your ruby version
  and disables rubocop entirely
- We just ensure that tests are passing in 1.9.3, but cannot guarantee
  everything will work smoothly

.travis.yml

@@ -1,10 +1,26 @@
 language: ruby
-rvm:
-  - "2.1.10"
-  - "2.2.6"
-  - "2.3.3"
-  - "2.4.0"
+# List is from https://www.ruby-lang.org/en/downloads/branches/
+# Merged with whatever is the top of each branch at https://www.ruby-lang.org/en/downloads/releases/
+matrix:
+  include:
+    - rvm: "1.9.3"
+    - rvm: "2.0.0"
+    - rvm: "2.1.10"
+    - rvm: "2.2.9"
+    - rvm: "2.3.6"
+    - rvm: "2.4.2"
+    - rvm: "2.5.0"
+    - rvm: "2.5.0"
+      env: LINT=rubocop
+  allow_failures:
+  # These are EOL versions of ruby
+    - rvm: "1.9.3"
+    - rvm: "2.0.0"
+    - rvm: "2.1.10"
 before_install: gem update --system
 script:
   - bundle exec rake test
-  - bundle exec rake rubocop
+  - |
+    if [[ "$LINT" == "rubocop" ]] ; then
+      bundle exec rake rubocop
+    fi

README.md

@@ -143,6 +143,19 @@ You can find invoices API documentation at <https://docs.razorpay.com/v1/page/in
 5. Push to the branch (`git push origin my-new-feature`)
 6. Create a new Pull Request
 
+## Supported Versions
+
+While we support [all currently supported versions of Ruby](https://www.ruby-lang.org/en/downloads/branches/)
+only, the code is tested against the following versions:
+
+* 1.9.3
+* 2.0.0
+* 2.1.10
+* 2.2.9
+* 2.3.6
+* 2.4.2
+* 2.5.0
+
 ## Release
 
 Steps to follow for a release:

Rakefile

@@ -1,5 +1,7 @@
 require 'rake/testtask'
-require 'rubocop/rake_task'
+
+# Don't try to run rubocop in 1.9.3
+require 'rubocop/rake_task' if RUBY_VERSION >= '2.1.0'
 
 Rake::TestTask.new do |t|
   t.libs << 'test'
@@ -8,7 +10,7 @@ Rake::TestTask.new do |t|
 end
 
 desc 'Run tests'
-task default: [:test, :rubocop]
+task default: [:test]
 
 desc 'Run rubocop'
 task :rubocop do

razorpay-ruby.gemspec

@@ -17,10 +17,20 @@ Gem::Specification.new do |spec|
   spec.test_files    = spec.files.grep(/^(test|spec|features)/)
   spec.require_paths = ['lib']
 
+  spec.add_dependency 'httparty', '~> 0.14'
+
   spec.add_development_dependency 'coveralls', '~> 0.8'
-  spec.add_development_dependency 'minitest', '~> 5.10'
+  spec.add_development_dependency 'minitest', '~> 5.11'
   spec.add_development_dependency 'rake', '~> 12.0'
-  spec.add_development_dependency 'rubocop', '~> 0.49'
-  spec.add_development_dependency 'webmock', '~> 2.3'
-  spec.add_dependency 'httparty', '~> 0.14'
+
+  if RUBY_VERSION >= '2.1.0'
+    # rubocop is only run in the latest ruby build
+    # so we use the latest version and don't switch to a
+    # older version for 1.9.3
+    spec.add_development_dependency 'rubocop', '~> 0.49'
+    spec.add_development_dependency 'webmock', '~> 3.0'
+  else
+    # Webmock 3.0 does not support Ruby 1.9.3
+    spec.add_development_dependency 'webmock', '~> 2.3'
+  end
 end