1 files changed, 34 insertions, 0 deletions
diff --git a/spec/ruby/library/rbconfig/unicode_version_spec.rb b/spec/ruby/library/rbconfig/unicode_version_spec.rb
new file mode 100644
index 0000000000..44216700c8
--- /dev/null
+++ b/spec/ruby/library/rbconfig/unicode_version_spec.rb
@@ -0,0 +1,34 @@
+require_relative '../../spec_helper'
+require 'rbconfig'
+
+describe "RbConfig::CONFIG['UNICODE_VERSION']" do
+  ruby_version_is ""..."2.5" do
+    it "is 9.0.0 for Ruby 2.4" do
+      RbConfig::CONFIG['UNICODE_VERSION'].should == "9.0.0"
+    end
+  end
+
+  ruby_version_is "2.5"..."2.6" do
+    it "is 10.0.0 for Ruby 2.5" do
+      RbConfig::CONFIG['UNICODE_VERSION'].should == "10.0.0"
+    end
+  end
+
+  ruby_version_is "2.6"..."2.6.2" do
+    it "is 11.0.0 for Ruby 2.6.0 and 2.6.1" do
+      RbConfig::CONFIG['UNICODE_VERSION'].should == "11.0.0"
+    end
+  end
+
+  ruby_version_is "2.6.2"..."2.6.3" do
+    it "is 12.0.0 for Ruby 2.6.2" do
+      RbConfig::CONFIG['UNICODE_VERSION'].should == "12.0.0"
+    end
+  end
+
+  ruby_version_is "2.6.3" do
+    it "is 12.1.0 for Ruby 2.6.3+ and Ruby 2.7" do
+      RbConfig::CONFIG['UNICODE_VERSION'].should == "12.1.0"
+    end
+  end
+end