6 files changed, 100 insertions, 15 deletions
diff --git a/spec/ruby/core/integer/ceil_spec.rb b/spec/ruby/core/integer/ceil_spec.rb
index 13bdaf838d..eb633fba78 100644
--- a/spec/ruby/core/integer/ceil_spec.rb
+++ b/spec/ruby/core/integer/ceil_spec.rb
@@ -1,11 +1,16 @@
 require_relative '../../spec_helper'
 require_relative 'shared/to_i'
 require_relative 'shared/integer_rounding'
+require_relative 'shared/integer_ceil_precision'
 
 describe "Integer#ceil" do
   it_behaves_like :integer_to_i, :ceil
   it_behaves_like :integer_rounding_positive_precision, :ceil
 
+  context "with precision" do
+    it_behaves_like :integer_ceil_precision, :Integer
+  end
+
   context "precision argument specified as part of the ceil method is negative" do
     it "returns the smallest integer greater than self with at least precision.abs trailing zeros" do
       18.ceil(-1).should eql(20)
diff --git a/spec/ruby/core/integer/floor_spec.rb b/spec/ruby/core/integer/floor_spec.rb
index aaa816fdc5..8fb84d58cb 100644
--- a/spec/ruby/core/integer/floor_spec.rb
+++ b/spec/ruby/core/integer/floor_spec.rb
@@ -1,19 +1,13 @@
 require_relative '../../spec_helper'
 require_relative 'shared/to_i'
 require_relative 'shared/integer_rounding'
+require_relative 'shared/integer_floor_precision'
 
 describe "Integer#floor" do
   it_behaves_like :integer_to_i, :floor
   it_behaves_like :integer_rounding_positive_precision, :floor
 
-  context "precision argument specified as part of the floor method is negative" do
-    it "returns the largest integer less than self with at least precision.abs trailing zeros" do
-      1832.floor(-1).should eql(1830)
-      1832.floor(-2).should eql(1800)
-      1832.floor(-3).should eql(1000)
-      -1832.floor(-1).should eql(-1840)
-      -1832.floor(-2).should eql(-1900)
-      -1832.floor(-3).should eql(-2000)
-    end
+  context "with precision" do
+    it_behaves_like :integer_floor_precision, :Integer
   end
 end
diff --git a/spec/ruby/core/integer/pow_spec.rb b/spec/ruby/core/integer/pow_spec.rb
index 4712911095..ecaca01eff 100644
--- a/spec/ruby/core/integer/pow_spec.rb
+++ b/spec/ruby/core/integer/pow_spec.rb
@@ -19,13 +19,13 @@ describe "Integer#pow" 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
+      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
+      2.pow(5, -12).should == -4
+      -2.pow(5, 12).should == 4
       -2.pow(5, -12).should == -8
     end
 
diff --git a/spec/ruby/core/integer/remainder_spec.rb b/spec/ruby/core/integer/remainder_spec.rb
index 96268b3af5..757e42fbe8 100644
--- a/spec/ruby/core/integer/remainder_spec.rb
+++ b/spec/ruby/core/integer/remainder_spec.rb
@@ -15,8 +15,8 @@ describe "Integer#remainder" do
     end
 
     it "keeps sign of self" do
-       5.remainder( 3).should ==  2
-       5.remainder(-3).should ==  2
+      5.remainder( 3).should == 2
+      5.remainder(-3).should == 2
       -5.remainder( 3).should == -2
       -5.remainder(-3).should == -2
     end
diff --git a/spec/ruby/core/integer/shared/integer_ceil_precision.rb b/spec/ruby/core/integer/shared/integer_ceil_precision.rb
new file mode 100644
index 0000000000..9f31c2cf61
--- /dev/null
+++ b/spec/ruby/core/integer/shared/integer_ceil_precision.rb
@@ -0,0 +1,43 @@
+describe :integer_ceil_precision, shared: true do
+  context "precision is zero" do
+    it "returns integer self" do
+      send(@method, 0).ceil(0).should.eql?(0)
+      send(@method, 123).ceil(0).should.eql?(123)
+      send(@method, -123).ceil(0).should.eql?(-123)
+    end
+  end
+
+  context "precision is positive" do
+    it "returns self" do
+      send(@method, 0).ceil(1).should.eql?(send(@method, 0))
+      send(@method, 0).ceil(10).should.eql?(send(@method, 0))
+
+      send(@method, 123).ceil(10).should.eql?(send(@method, 123))
+      send(@method, -123).ceil(10).should.eql?(send(@method, -123))
+    end
+  end
+
+  context "precision is negative" do
+    it "always returns 0 when self is 0" do
+      send(@method, 0).ceil(-1).should.eql?(0)
+      send(@method, 0).ceil(-10).should.eql?(0)
+    end
+
+    it "returns largest integer less than self with at least precision.abs trailing zeros" do
+      send(@method, 123).ceil(-1).should.eql?(130)
+      send(@method, 123).ceil(-2).should.eql?(200)
+      send(@method, 123).ceil(-3).should.eql?(1000)
+
+      send(@method, -123).ceil(-1).should.eql?(-120)
+      send(@method, -123).ceil(-2).should.eql?(-100)
+      send(@method, -123).ceil(-3).should.eql?(0)
+    end
+
+    ruby_bug "#20654", ""..."3.4" do
+      it "returns 10**precision.abs when precision.abs is larger than the number digits of self" do
+        send(@method, 123).ceil(-20).should.eql?(100000000000000000000)
+        send(@method, 123).ceil(-50).should.eql?(100000000000000000000000000000000000000000000000000)
+      end
+    end
+  end
+end
diff --git a/spec/ruby/core/integer/shared/integer_floor_precision.rb b/spec/ruby/core/integer/shared/integer_floor_precision.rb
new file mode 100644
index 0000000000..4c5888c6c4
--- /dev/null
+++ b/spec/ruby/core/integer/shared/integer_floor_precision.rb
@@ -0,0 +1,43 @@
+describe :integer_floor_precision, shared: true do
+  context "precision is zero" do
+    it "returns integer self" do
+      send(@method, 0).floor(0).should.eql?(0)
+      send(@method, 123).floor(0).should.eql?(123)
+      send(@method, -123).floor(0).should.eql?(-123)
+    end
+  end
+
+  context "precision is positive" do
+    it "returns self" do
+      send(@method, 0).floor(1).should.eql?(send(@method, 0))
+      send(@method, 0).floor(10).should.eql?(send(@method, 0))
+
+      send(@method, 123).floor(10).should.eql?(send(@method, 123))
+      send(@method, -123).floor(10).should.eql?(send(@method, -123))
+    end
+  end
+
+  context "precision is negative" do
+    it "always returns 0 when self is 0" do
+      send(@method, 0).floor(-1).should.eql?(0)
+      send(@method, 0).floor(-10).should.eql?(0)
+    end
+
+    it "returns largest integer less than self with at least precision.abs trailing zeros" do
+      send(@method, 123).floor(-1).should.eql?(120)
+      send(@method, 123).floor(-2).should.eql?(100)
+      send(@method, 123).floor(-3).should.eql?(0)
+
+      send(@method, -123).floor(-1).should.eql?(-130)
+      send(@method, -123).floor(-2).should.eql?(-200)
+      send(@method, -123).floor(-3).should.eql?(-1000)
+    end
+
+    ruby_bug "#20654", ""..."3.4" do
+      it "returns -(10**precision.abs) when self is negative and precision.abs is larger than the number digits of self" do
+        send(@method, -123).floor(-20).should.eql?(-100000000000000000000)
+        send(@method, -123).floor(-50).should.eql?(-100000000000000000000000000000000000000000000000000)
+      end
+    end
+  end
+end