1 files changed, 15 insertions, 3 deletions
diff --git a/spec/ruby/core/range/min_spec.rb b/spec/ruby/core/range/min_spec.rb
index f1dff73e6d..ffd40f3a07 100644
--- a/spec/ruby/core/range/min_spec.rb
+++ b/spec/ruby/core/range/min_spec.rb
@@ -38,6 +38,19 @@ describe "Range#min" do
     time_end = Time.now + 1.0
     (time_start...time_end).min.should equal(time_start)
   end
+
+  ruby_version_is "2.6" do
+    it "returns the start point for endless ranges" do
+      eval("(1..)").min.should == 1
+      eval("(1.0...)").min.should == 1.0
+    end
+  end
+
+  ruby_version_is "2.7" do
+    it "raises RangeError when called on an beginless range" do
+      -> { eval("(..1)").min }.should raise_error(RangeError)
+    end
+  end
 end
 
 describe "Range#min given a block" do
@@ -74,9 +87,8 @@ describe "Range#min given a block" do
   end
 
   ruby_version_is "2.6" do
-    it "returns the start point for endless ranges" do
-      eval("(1..)").min.should == 1
-      eval("(1.0...)").min.should == 1.0
+    it "raises RangeError when called with custom comparison method on an endless range" do
+      -> { eval("(1..)").min {|a, b| a} }.should raise_error(RangeError)
     end
   end
 end