travis: Clarify bundler version

Signed-off-by: Kenji Okimoto <[email protected]>

Author: okkez

.travis.yml

@@ -9,13 +9,17 @@ notifications:
     on_failure: always
     on_start: never
 
-rvm:
-  - 2.1
-  - 2.2
-  - 2.3
-  - 2.4.5
-  - 2.5.5
-  - 2.6.2
-
-gemfile:
-  - Gemfile
+matrix:
+  include:
+    - rvm: 2.1
+      gemfile: gemfiles/ruby2.3.gemfile
+    - rvm: 2.2
+      gemfile: gemfiles/ruby2.3.gemfile
+    - rvm: 2.3
+      gemfile: gemfiles/ruby2.3.gemfile
+    - rvm: 2.4.5
+      gemfile: Gemfile
+    - rvm: 2.5.5
+      gemfile: Gemfile
+    - rvm: 2.6.2
+      gemfile: Gemfile

Appraisals

@@ -1,3 +1,3 @@
-appraise "fluentd v0.14" do
-  gem "fluentd", "~> 0.14.0"
+appraise "ruby2.3" do
+  gem "bundler", "~> 1.11"
 end

fluent-plugin-concat.gemspec

@@ -17,7 +17,7 @@ Gem::Specification.new do |spec|
   spec.require_paths = ["lib"]
 
   spec.add_runtime_dependency "fluentd", ">= 0.14.0", "< 2"
-  spec.add_development_dependency "bundler", "~> 1.11"
+  spec.add_development_dependency "bundler"
   spec.add_development_dependency "rake", "~> 12.0"
   spec.add_development_dependency "test-unit", ">= 3.1.0"
   spec.add_development_dependency "test-unit-rr"

gemfiles/ruby2.3.gemfile

@@ -0,0 +1,7 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "bundler", "~> 1.11"
+
+gemspec path: "../"