spec/ruby/core/unboundmethod/bind_call_spec.rb: Add ruby_version_is guard

spec/ruby/core/unboundmethod/bind_call_spec.rb

@@ -1,50 +1,52 @@
 require_relative '../../spec_helper'
 require_relative 'fixtures/classes'
 
-describe "UnboundMethod#bind_call" do
-  before :each do
-    @normal_um = UnboundMethodSpecs::Methods.new.method(:foo).unbind
-    @parent_um = UnboundMethodSpecs::Parent.new.method(:foo).unbind
-    @child1_um = UnboundMethodSpecs::Child1.new.method(:foo).unbind
-    @child2_um = UnboundMethodSpecs::Child2.new.method(:foo).unbind
-  end
-
-  it "raises TypeError if object is not kind_of? the Module the method defined in" do
-    -> { @normal_um.bind_call(UnboundMethodSpecs::B.new) }.should raise_error(TypeError)
-  end
-
-  it "binds and calls the method if object is kind_of the Module the method defined in" do
-    @normal_um.bind_call(UnboundMethodSpecs::Methods.new).should == true
-  end
-
-  it "binds and calls the method on any object when UnboundMethod is unbound from a module" do
-    UnboundMethodSpecs::Mod.instance_method(:from_mod).bind_call(Object.new).should == nil
-  end
-
-  it "binds and calls the method for any object kind_of? the Module the method is defined in" do
-    @parent_um.bind_call(UnboundMethodSpecs::Child1.new).should == nil
-    @child1_um.bind_call(UnboundMethodSpecs::Parent.new).should == nil
-    @child2_um.bind_call(UnboundMethodSpecs::Child1.new).should == nil
-  end
-
-  it "binds and calls a Kernel method retrieved from Object on BasicObject" do
-    Object.instance_method(:instance_of?).bind_call(BasicObject.new, BasicObject).should == true
-  end
-
-  it "binds and calls a Parent's class method to any Child's class methods" do
-    um = UnboundMethodSpecs::Parent.method(:class_method).unbind
-    um.bind_call(UnboundMethodSpecs::Child1).should == "I am UnboundMethodSpecs::Child1"
-  end
-
-  it "will raise when binding a an object singleton's method to another object" do
-    other = UnboundMethodSpecs::Parent.new
-    p = UnboundMethodSpecs::Parent.new
-    class << p
-      def singleton_method
-        :single
-      end
+ruby_version_is '2.7' do
+  describe "UnboundMethod#bind_call" do
+    before :each do
+      @normal_um = UnboundMethodSpecs::Methods.new.method(:foo).unbind
+      @parent_um = UnboundMethodSpecs::Parent.new.method(:foo).unbind
+      @child1_um = UnboundMethodSpecs::Child1.new.method(:foo).unbind
+      @child2_um = UnboundMethodSpecs::Child2.new.method(:foo).unbind
+    end
+
+    it "raises TypeError if object is not kind_of? the Module the method defined in" do
+      -> { @normal_um.bind_call(UnboundMethodSpecs::B.new) }.should raise_error(TypeError)
+    end
+
+    it "binds and calls the method if object is kind_of the Module the method defined in" do
+      @normal_um.bind_call(UnboundMethodSpecs::Methods.new).should == true
+    end
+
+    it "binds and calls the method on any object when UnboundMethod is unbound from a module" do
+      UnboundMethodSpecs::Mod.instance_method(:from_mod).bind_call(Object.new).should == nil
+    end
+
+    it "binds and calls the method for any object kind_of? the Module the method is defined in" do
+      @parent_um.bind_call(UnboundMethodSpecs::Child1.new).should == nil
+      @child1_um.bind_call(UnboundMethodSpecs::Parent.new).should == nil
+      @child2_um.bind_call(UnboundMethodSpecs::Child1.new).should == nil
+    end
+
+    it "binds and calls a Kernel method retrieved from Object on BasicObject" do
+      Object.instance_method(:instance_of?).bind_call(BasicObject.new, BasicObject).should == true
+    end
+
+    it "binds and calls a Parent's class method to any Child's class methods" do
+      um = UnboundMethodSpecs::Parent.method(:class_method).unbind
+      um.bind_call(UnboundMethodSpecs::Child1).should == "I am UnboundMethodSpecs::Child1"
+    end
+
+    it "will raise when binding a an object singleton's method to another object" do
+      other = UnboundMethodSpecs::Parent.new
+      p = UnboundMethodSpecs::Parent.new
+      class << p
+        def singleton_method
+          :single
+        end
+      end
+      um = p.method(:singleton_method).unbind
+      ->{ um.bind_call(other) }.should raise_error(TypeError)
     end
-    um = p.method(:singleton_method).unbind
-    ->{ um.bind_call(other) }.should raise_error(TypeError)
   end
 end