1 files changed, 42 insertions, 40 deletions
diff --git a/spec/ruby/core/integer/pow_spec.rb b/spec/ruby/core/integer/pow_spec.rb
index ed14c40a27..12a3839c40 100644
--- a/spec/ruby/core/integer/pow_spec.rb
+++ b/spec/ruby/core/integer/pow_spec.rb
@@ -2,48 +2,50 @@ require_relative '../../spec_helper'
 require_relative 'fixtures/classes'
 require_relative 'shared/exponent'
 
-ruby_version_is "2.5" do
-  describe "Integer#pow" do
-    context "one argument is passed" do
-      it_behaves_like :integer_exponent, :pow
+describe "Integer#pow" do
+  context "one argument is passed" do
+    it_behaves_like :integer_exponent, :pow
+  end
+
+  context "two arguments are passed" do
+    it "returns modulo of self raised to the given power" do
+      2.pow(5, 12).should == 8
+      2.pow(6, 13).should == 12
+      2.pow(7, 14).should == 2
+      2.pow(8, 15).should == 1
+    end
+
+    it "works well with bignums" do
+      2.pow(61, 5843009213693951).should.eql? 3697379018277258
+      2.pow(62, 5843009213693952).should.eql? 1551748822859776
+      2.pow(63, 5843009213693953).should.eql? 3103497645717974
+      2.pow(64, 5843009213693954).should.eql? 363986077738838
+    end
+
+    it "handles sign like #divmod does" do
+      2.pow(5, 12).should == 8
+      2.pow(5, -12).should == -4
+      -2.pow(5, 12).should == 4
+      -2.pow(5, -12).should == -8
+    end
+
+    it "ensures all arguments are integers" do
+      -> { 2.pow(5, 12.0) }.should.raise(TypeError, /2nd argument not allowed unless all arguments are integers/)
+      -> { 2.pow(5, Rational(12, 1)) }.should.raise(TypeError, /2nd argument not allowed unless all arguments are integers/)
+    end
+
+    it "raises TypeError for non-numeric value" do
+      -> { 2.pow(5, "12") }.should.raise(TypeError)
+      -> { 2.pow(5, []) }.should.raise(TypeError)
+      -> { 2.pow(5, nil) }.should.raise(TypeError)
+    end
+
+    it "raises a ZeroDivisionError when the given argument is 0" do
+      -> { 2.pow(5, 0) }.should.raise(ZeroDivisionError)
     end
 
-    context "two arguments are passed" do
-      it "returns modulo of self raised to the given power" do
-        2.pow(5, 12).should == 8
-        2.pow(6, 13).should == 12
-        2.pow(7, 14).should == 2
-        2.pow(8, 15).should == 1
-      end
-
-      it "works well with bignums" do
-        2.pow(61, 5843009213693951).should eql 3697379018277258
-        2.pow(62, 5843009213693952).should eql 1551748822859776
-        2.pow(63, 5843009213693953).should eql 3103497645717974
-        2.pow(64, 5843009213693954).should eql  363986077738838
-      end
-
-      it "handles sign like #divmod does" do
-         2.pow(5,  12).should ==  8
-         2.pow(5, -12).should == -4
-        -2.pow(5,  12).should ==  4
-        -2.pow(5, -12).should == -8
-      end
-
-      it "ensures all arguments are integers" do
-        -> { 2.pow(5, 12.0) }.should raise_error(TypeError, /2nd argument not allowed unless all arguments are integers/)
-        -> { 2.pow(5, Rational(12, 1)) }.should raise_error(TypeError, /2nd argument not allowed unless all arguments are integers/)
-      end
-
-      it "raises TypeError for non-numeric value" do
-        -> { 2.pow(5, "12") }.should raise_error(TypeError)
-        -> { 2.pow(5, []) }.should raise_error(TypeError)
-        -> { 2.pow(5, nil) }.should raise_error(TypeError)
-      end
-
-      it "raises a ZeroDivisionError when the given argument is 0" do
-        -> { 2.pow(5, 0) }.should raise_error(ZeroDivisionError)
-      end
+    it "raises a RangeError when the first argument is negative and the second argument is present" do
+      -> { 2.pow(-5, 1) }.should.raise(RangeError)
     end
   end
 end