Update to ruby/spec@254c380

spec/ruby/core/array/sum_spec.rb

@@ -9,6 +9,35 @@ describe "Array#sum" do
     [1, 2, 3].sum { |i| i * 10 }.should == 60
   end
 
+  # https://bugs.ruby-lang.org/issues/12217
+  # https://github.com/ruby/ruby/blob/master/doc/ChangeLog-2.4.0#L6208-L6214
+  it "uses Kahan's compensated summation algorithm for precise sum of float numbers" do
+    floats = [2.7800000000000002, 5.0, 2.5, 4.44, 3.89, 3.89, 4.44, 7.78, 5.0, 2.7800000000000002, 5.0, 2.5]
+    naive_sum = floats.reduce { |sum, e| sum + e }
+    naive_sum.should == 50.00000000000001
+    floats.sum.should == 50.0
+  end
+
+  it "handles infinite values and NaN" do
+    [1.0, Float::INFINITY].sum.should == Float::INFINITY
+    [1.0, -Float::INFINITY].sum.should == -Float::INFINITY
+    [1.0, Float::NAN].sum.should.nan?
+
+    [Float::INFINITY, 1.0].sum.should == Float::INFINITY
+    [-Float::INFINITY, 1.0].sum.should == -Float::INFINITY
+    [Float::NAN, 1.0].sum.should.nan?
+
+    [Float::NAN, Float::INFINITY].sum.should.nan?
+    [Float::INFINITY, Float::NAN].sum.should.nan?
+
+    [Float::INFINITY, -Float::INFINITY].sum.should.nan?
+    [-Float::INFINITY, Float::INFINITY].sum.should.nan?
+
+    [Float::INFINITY, Float::INFINITY].sum.should == Float::INFINITY
+    [-Float::INFINITY, -Float::INFINITY].sum.should == -Float::INFINITY
+    [Float::NAN, Float::NAN].sum.should.nan?
+  end
+
   it "returns init value if array is empty" do
     [].sum(-1).should == -1
   end

spec/ruby/core/enumerable/sum_spec.rb

@@ -25,4 +25,13 @@ describe 'Enumerable#sum' do
   it 'takes a block to transform the elements' do
     @enum.sum { |element| element * 2 }.should == 10/3r
   end
+
+  # https://bugs.ruby-lang.org/issues/12217
+  # https://github.com/ruby/ruby/blob/master/doc/ChangeLog-2.4.0#L6208-L6214
+  it "uses Kahan's compensated summation algorithm for precise sum of float numbers" do
+    floats = [2.7800000000000002, 5.0, 2.5, 4.44, 3.89, 3.89, 4.44, 7.78, 5.0, 2.7800000000000002, 5.0, 2.5].to_enum
+    naive_sum = floats.reduce { |sum, e| sum + e }
+    naive_sum.should == 50.00000000000001
+    floats.sum.should == 50.0
+  end
 end

spec/ruby/core/file/utime_spec.rb

@@ -70,13 +70,11 @@ describe "File.utime" do
     end
   end
 
-  platform_is_not :windows do
+  it "may set nanosecond precision" do
-    it "sets nanosecond precision" do
     t = Time.utc(2007, 11, 1, 15, 25, 0, 123456.789r)
     File.utime(t, t, @file1)
-      File.atime(@file1).nsec.should == 123456789
+    File.atime(@file1).nsec.should.between?(0, 123500000)
-      File.mtime(@file1).nsec.should == 123456789
+    File.mtime(@file1).nsec.should.between?(0, 123500000)
-    end
   end
 
   platform_is :linux do

spec/ruby/core/module/autoload_spec.rb

@@ -441,6 +441,26 @@ describe "Module#autoload" do
     ScratchPad.recorded.should == [:raise, :raise]
   end
 
+  ruby_version_is "3.1" do
+    it "removes the constant from Module#constants if the loaded file does not define it" do
+      path = fixture(__FILE__, "autoload_o.rb")
+      ScratchPad.record []
+      ModuleSpecs::Autoload.autoload :O, path
+
+      ModuleSpecs::Autoload.const_defined?(:O).should == true
+      ModuleSpecs::Autoload.should have_constant(:O)
+      ModuleSpecs::Autoload.autoload?(:O).should == path
+
+      -> { ModuleSpecs::Autoload::O }.should raise_error(NameError)
+
+      ModuleSpecs::Autoload.const_defined?(:O).should == false
+      ModuleSpecs::Autoload.should_not have_constant(:O)
+      ModuleSpecs::Autoload.autoload?(:O).should == nil
+      -> { ModuleSpecs::Autoload.const_get(:O) }.should raise_error(NameError)
+    end
+  end
+
+  ruby_version_is ""..."3.1" do
     it "does not remove the constant from Module#constants if the loaded file does not define it, but leaves it as 'undefined'" do
       path = fixture(__FILE__, "autoload_o.rb")
       ScratchPad.record []
@@ -452,11 +472,12 @@ describe "Module#autoload" do
 
       -> { ModuleSpecs::Autoload::O }.should raise_error(NameError)
 
-    ModuleSpecs::Autoload.should have_constant(:O)
       ModuleSpecs::Autoload.const_defined?(:O).should == false
+      ModuleSpecs::Autoload.should have_constant(:O)
       ModuleSpecs::Autoload.autoload?(:O).should == nil
       -> { ModuleSpecs::Autoload.const_get(:O) }.should raise_error(NameError)
     end
+  end
 
   it "does not try to load the file again if the loaded file did not define the constant" do
     path = fixture(__FILE__, "autoload_o.rb")
@@ -554,13 +575,35 @@ describe "Module#autoload" do
         # Basically, the parent autoload constant remains in a "undefined" state
         self.autoload?(:DeclaredInParentDefinedInCurrent).should == nil
         const_defined?(:DeclaredInParentDefinedInCurrent).should == false
-        self.should have_constant(:DeclaredInParentDefinedInCurrent)
         -> { DeclaredInParentDefinedInCurrent }.should raise_error(NameError)
 
         ModuleSpecs::Autoload::LexicalScope.send(:remove_const, :DeclaredInParentDefinedInCurrent)
       end
     end
 
+    ruby_version_is "3.1" do
+      it "looks up in parent scope after failed autoload" do
+        @remove << :DeclaredInCurrentDefinedInParent
+        module ModuleSpecs::Autoload
+          ScratchPad.record -> {
+            DeclaredInCurrentDefinedInParent = :declared_in_current_defined_in_parent
+          }
+
+          class LexicalScope
+            autoload :DeclaredInCurrentDefinedInParent, fixture(__FILE__, "autoload_callback.rb")
+            -> { DeclaredInCurrentDefinedInParent }.should_not raise_error(NameError)
+            # Basically, the autoload constant remains in a "undefined" state
+            self.autoload?(:DeclaredInCurrentDefinedInParent).should == nil
+            const_defined?(:DeclaredInCurrentDefinedInParent).should == false
+            -> { const_get(:DeclaredInCurrentDefinedInParent) }.should raise_error(NameError)
+          end
+
+          DeclaredInCurrentDefinedInParent.should == :declared_in_current_defined_in_parent
+        end
+      end
+    end
+
+    ruby_version_is ""..."3.1" do
       it "and fails when finding the undefined autoload constant in the current scope when declared in current and defined in parent" do
         @remove << :DeclaredInCurrentDefinedInParent
         module ModuleSpecs::Autoload
@@ -581,6 +624,7 @@ describe "Module#autoload" do
           DeclaredInCurrentDefinedInParent.should == :declared_in_current_defined_in_parent
         end
       end
+    end
 
     it "in the included modules" do
       @remove << :DefinedInIncludedModule

spec/ruby/core/module/const_set_spec.rb

@@ -101,7 +101,7 @@ describe "Module#const_set" do
       mod.const_get(:Foo).should == 1
     end
 
-    it "does not warn if the previous value was undefined" do
+    it "does not warn after a failed autoload" do
       path = fixture(__FILE__, "autoload_o.rb")
       ScratchPad.record []
       mod = Module.new
@@ -109,7 +109,6 @@ describe "Module#const_set" do
       mod.autoload :Foo, path
       -> { mod::Foo }.should raise_error(NameError)
 
-      mod.should have_constant(:Foo)
       mod.const_defined?(:Foo).should == false
       mod.autoload?(:Foo).should == nil
 

spec/ruby/library/ipaddr/new_spec.rb

@@ -77,6 +77,7 @@ describe "IPAddr#new" do
     a.family.should == Socket::AF_INET6
   end
 
+  ruby_version_is ""..."3.1" do
     it "raises on incorrect IPAddr strings" do
       [
         ["fe80::1%fxp0"],
@@ -91,3 +92,19 @@ describe "IPAddr#new" do
       }
     end
   end
+
+  ruby_version_is "3.1" do
+    it "raises on incorrect IPAddr strings" do
+      [
+        ["::1/255.255.255.0"],
+        [IPAddr.new("::1").to_i],
+        ["::ffff:192.168.1.2/120", Socket::AF_INET],
+        ["[192.168.1.2]/120"],
+      ].each { |args|
+        ->{
+          IPAddr.new(*args)
+        }.should raise_error(ArgumentError)
+      }
+    end
+  end
+end

spec/ruby/library/stringio/ungetbyte_spec.rb

@@ -30,7 +30,7 @@ describe "StringIO#ungetbyte" do
     io.string.should == 'Shis is a simple string.'
   end
 
-  it "ungets the bytes of a string if given a string as an arugment" do
+  it "ungets the bytes of a string if given a string as an argument" do
     str = "\u01a9"
     io = StringIO.new(str)
     b = io.getbyte