1 files changed, 11 insertions, 6 deletions
diff --git a/spec/ruby/core/enumerator/arithmetic_sequence/begin_spec.rb b/spec/ruby/core/enumerator/arithmetic_sequence/begin_spec.rb
index c8d91ebaec..bd243fa0b5 100644
--- a/spec/ruby/core/enumerator/arithmetic_sequence/begin_spec.rb
+++ b/spec/ruby/core/enumerator/arithmetic_sequence/begin_spec.rb
@@ -1,11 +1,16 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is "2.6" do
-  describe "Enumerator::ArithmeticSequence#begin" do
-    it "returns the begin of the sequence" do
-      1.step(10).begin.should == 1
-      (1..10).step.begin.should == 1
-      (1...10).step.begin.should == 1
+describe "Enumerator::ArithmeticSequence#begin" do
+  it "returns the begin of the sequence" do
+    1.step(10).begin.should == 1
+    (1..10).step.begin.should == 1
+    (1...10).step.begin.should == 1
+  end
+
+  context "with beginless" do
+    it "returns nil as begin of the sequence" do
+      (..10).step(1).begin.should == nil
+      (...10).step(1).begin.should == nil
     end
   end
 end