1 files changed, 33 insertions, 21 deletions
diff --git a/spec/ruby/core/range/max_spec.rb b/spec/ruby/core/range/max_spec.rb
index 6c9ada2a3c..57714967ce 100644
--- a/spec/ruby/core/range/max_spec.rb
+++ b/spec/ruby/core/range/max_spec.rb
@@ -14,54 +14,66 @@ describe "Range#max" do
   end
 
   it "raises TypeError when called on an exclusive range and a non Integer value" do
-    -> { (303.20...908.1111).max }.should raise_error(TypeError)
+    -> { (303.20...908.1111).max }.should.raise(TypeError)
   end
 
   it "returns nil when the endpoint is less than the start point" do
-    (100..10).max.should be_nil
-    ('z'..'l').max.should be_nil
+    (100..10).max.should == nil
+    ('z'..'l').max.should == nil
   end
 
   it "returns nil when the endpoint equals the start point and the range is exclusive" do
-    (5...5).max.should be_nil
+    (5...5).max.should == nil
   end
 
   it "returns the endpoint when the endpoint equals the start point and the range is inclusive" do
-    (5..5).max.should equal(5)
+    (5..5).max.should.equal?(5)
   end
 
   it "returns nil when the endpoint is less than the start point in a Float range" do
-    (3003.20..908.1111).max.should be_nil
+    (3003.20..908.1111).max.should == nil
   end
 
   it "returns end point when the range is Time..Time(included end point)" do
     time_start = Time.now
     time_end = Time.now + 1.0
-    (time_start..time_end).max.should equal(time_end)
+    (time_start..time_end).max.should.equal?(time_end)
   end
 
   it "raises TypeError when called on a Time...Time(excluded end point)" do
     time_start = Time.now
     time_end = Time.now + 1.0
-    -> { (time_start...time_end).max  }.should raise_error(TypeError)
+    -> { (time_start...time_end).max  }.should.raise(TypeError)
   end
 
   it "raises RangeError when called on an endless range" do
-    -> { eval("(1..)").max }.should raise_error(RangeError)
+    -> { eval("(1..)").max }.should.raise(RangeError)
   end
 
-  ruby_version_is "3.0" do
-    it "returns the end point for beginless ranges" do
-      (..1).max.should == 1
-      (..1.0).max.should == 1.0
-    end
+  it "returns the end point for beginless ranges" do
+    (..1).max.should == 1
+    (..1.0).max.should == 1.0
+  end
 
-    it "raises for an exclusive beginless range" do
+  ruby_version_is ""..."4.0" do
+    it "raises for an exclusive beginless Integer range" do
       -> {
         (...1).max
-      }.should raise_error(TypeError, 'cannot exclude end value with non Integer begin value')
+      }.should.raise(TypeError, 'cannot exclude end value with non Integer begin value')
     end
   end
+
+  ruby_version_is "4.0" do
+    it "returns the end point for exclusive beginless Integer ranges" do
+      (...1).max.should == 0
+    end
+  end
+
+  it "raises for an exclusive beginless non Integer range" do
+    -> {
+      (...1.0).max
+    }.should.raise(TypeError, 'cannot exclude non Integer end value')
+  end
 end
 
 describe "Range#max given a block" do
@@ -70,7 +82,7 @@ describe "Range#max given a block" do
     (1..10).max {|a,b| acc << [a,b]; a }
     acc.flatten!
     (1..10).each do |value|
-      acc.include?(value).should be_true
+      acc.include?(value).should == true
     end
   end
 
@@ -92,12 +104,12 @@ describe "Range#max given a block" do
   end
 
   it "returns nil when the endpoint is less than the start point" do
-    (100..10).max {|x,y| x <=> y}.should be_nil
-    ('z'..'l').max {|x,y| x <=> y}.should be_nil
-    (5...5).max {|x,y| x <=> y}.should be_nil
+    (100..10).max {|x,y| x <=> y}.should == nil
+    ('z'..'l').max {|x,y| x <=> y}.should == nil
+    (5...5).max {|x,y| x <=> y}.should == nil
   end
 
   it "raises RangeError when called with custom comparison method on an beginless range" do
-    -> { (..1).max {|a, b| a} }.should raise_error(RangeError)
+    -> { (..1).max {|a, b| a} }.should.raise(RangeError)
   end
 end