Update to ruby/spec@519df35

29 files changed, 317 insertions, 177 deletions

diff --git a/spec/ruby/core/dir/shared/open.rb b/spec/ruby/core/dir/shared/open.rb
index fb2af71e05..76b08dc288 100644
--- a/spec/ruby/core/dir/shared/open.rb
+++ b/spec/ruby/core/dir/shared/open.rb
@@ -52,7 +52,7 @@ describe :dir_open, shared: true do
     options = mock("dir_open")
     options.should_receive(:to_hash).and_return({ encoding: Encoding::UTF_8 })
 
-    dir = Dir.send(@method, DirSpecs.mock_dir, options) {|d| d }
+    dir = Dir.send(@method, DirSpecs.mock_dir, **options) {|d| d }
     dir.should be_kind_of(Dir)
   end
 
diff --git a/spec/ruby/core/encoding/converter/convpath_spec.rb b/spec/ruby/core/encoding/converter/convpath_spec.rb
index 473f2db91e..23f1e5dc33 100644
--- a/spec/ruby/core/encoding/converter/convpath_spec.rb
+++ b/spec/ruby/core/encoding/converter/convpath_spec.rb
@@ -15,10 +15,10 @@ describe "Encoding::Converter#convpath" do
   end
 
   it "indicates if crlf_newline conversion would occur" do
-    ec = Encoding::Converter.new("ISo-8859-1", "EUC-JP", {crlf_newline: true})
+    ec = Encoding::Converter.new("ISo-8859-1", "EUC-JP", crlf_newline: true)
     ec.convpath.last.should == "crlf_newline"
 
-    ec = Encoding::Converter.new("ASCII", "UTF-8", {crlf_newline: false})
+    ec = Encoding::Converter.new("ASCII", "UTF-8", crlf_newline: false)
     ec.convpath.last.should_not == "crlf_newline"
   end
 end
diff --git a/spec/ruby/core/encoding/converter/new_spec.rb b/spec/ruby/core/encoding/converter/new_spec.rb
index 6a6343012c..9fc97263fe 100644
--- a/spec/ruby/core/encoding/converter/new_spec.rb
+++ b/spec/ruby/core/encoding/converter/new_spec.rb
@@ -50,7 +50,7 @@ describe "Encoding::Converter.new" do
   it "calls #to_hash to convert the options argument to a Hash if not a Fixnum" do
     opts = mock("encoding converter options")
     opts.should_receive(:to_hash).and_return({ replace: "fubar" })
-    conv = Encoding::Converter.new("us-ascii", "utf-8", opts)
+    conv = Encoding::Converter.new("us-ascii", "utf-8", **opts)
     conv.replacement.should == "fubar"
   end
 
diff --git a/spec/ruby/core/encoding/converter/primitive_convert_spec.rb b/spec/ruby/core/encoding/converter/primitive_convert_spec.rb
index 4a22606375..802d8e7cb1 100644
--- a/spec/ruby/core/encoding/converter/primitive_convert_spec.rb
+++ b/spec/ruby/core/encoding/converter/primitive_convert_spec.rb
@@ -85,7 +85,7 @@ describe "Encoding::Converter#primitive_convert" do
   end
 
   it "accepts an options hash" do
-    @ec.primitive_convert("","",nil,nil, {after_output: true}).should == :finished
+    @ec.primitive_convert("","",nil,nil, after_output: true).should == :finished
   end
 
   it "sets the destination buffer's encoding to the destination encoding if the conversion succeeded" do
diff --git a/spec/ruby/core/encoding/converter/search_convpath_spec.rb b/spec/ruby/core/encoding/converter/search_convpath_spec.rb
index 0535e7bdc3..0882af5539 100644
--- a/spec/ruby/core/encoding/converter/search_convpath_spec.rb
+++ b/spec/ruby/core/encoding/converter/search_convpath_spec.rb
@@ -15,12 +15,10 @@ describe "Encoding::Converter.search_convpath" do
   end
 
   it "indicates if crlf_newline conversion would occur" do
-    cp = Encoding::Converter.search_convpath(
-      "ISO-8859-1", "EUC-JP", {crlf_newline: true})
+    cp = Encoding::Converter.search_convpath("ISO-8859-1", "EUC-JP", crlf_newline: true)
     cp.last.should == "crlf_newline"
 
-    cp = Encoding::Converter.search_convpath(
-      "ASCII", "UTF-8", {crlf_newline: false})
+    cp = Encoding::Converter.search_convpath("ASCII", "UTF-8", crlf_newline: false)
     cp.last.should_not == "crlf_newline"
   end
 
diff --git a/spec/ruby/core/file/open_spec.rb b/spec/ruby/core/file/open_spec.rb
index d946fc5ecf..b6af2686e4 100644
--- a/spec/ruby/core/file/open_spec.rb
+++ b/spec/ruby/core/file/open_spec.rb
@@ -566,7 +566,7 @@ describe "File.open" do
     options = mock("file open options")
     options.should_receive(:to_hash).and_return({ mode: "r" })
 
-    @fh = File.open(@file, options)
+    @fh = File.open(@file, **options)
   end
 
   it "accepts extra flags as a keyword argument and combine with a string mode" do
diff --git a/spec/ruby/core/hash/fetch_values_spec.rb b/spec/ruby/core/hash/fetch_values_spec.rb
index 041a3f07e9..af3673f6ef 100644
--- a/spec/ruby/core/hash/fetch_values_spec.rb
+++ b/spec/ruby/core/hash/fetch_values_spec.rb
@@ -12,6 +12,10 @@ describe "Hash#fetch_values" do
       @hash.fetch_values(:a).should == [1]
       @hash.fetch_values(:a, :c).should == [1, 3]
     end
+
+    it "returns the values for keys ordered in the order of the requested keys" do
+      @hash.fetch_values(:c, :a).should == [3, 1]
+    end
   end
 
   describe "with unmatched keys" do
diff --git a/spec/ruby/core/io/initialize_spec.rb b/spec/ruby/core/io/initialize_spec.rb
index c8f3faf110..c0d84765a8 100644
--- a/spec/ruby/core/io/initialize_spec.rb
+++ b/spec/ruby/core/io/initialize_spec.rb
@@ -4,7 +4,7 @@ require_relative 'fixtures/classes'
 describe "IO#initialize" do
   before :each do
     @name = tmp("io_initialize.txt")
-    @io = new_io @name
+    @io = IO.new(new_fd(@name))
     @fd = @io.fileno
   end
 
diff --git a/spec/ruby/core/io/pipe_spec.rb b/spec/ruby/core/io/pipe_spec.rb
index 5b2f18d836..a7dcb7fab8 100644
--- a/spec/ruby/core/io/pipe_spec.rb
+++ b/spec/ruby/core/io/pipe_spec.rb
@@ -179,7 +179,7 @@ describe "IO.pipe" do
   it "calls #to_hash to convert an options argument" do
     options = mock("io pipe encoding options")
     options.should_receive(:to_hash).and_return({ invalid: :replace })
-    IO.pipe("UTF-8", "ISO-8859-1", options) { |r, w| }
+    IO.pipe("UTF-8", "ISO-8859-1", **options) { |r, w| }
   end
 
   it "calls #to_str to convert the first argument to a String" do
diff --git a/spec/ruby/core/io/read_spec.rb b/spec/ruby/core/io/read_spec.rb
index 267d840cd3..1e9a8d2a4f 100644
--- a/spec/ruby/core/io/read_spec.rb
+++ b/spec/ruby/core/io/read_spec.rb
@@ -24,35 +24,35 @@ describe "IO.read" do
   end
 
   it "accepts an empty options Hash" do
-    IO.read(@fname, {}).should == @contents
+    IO.read(@fname, **{}).should == @contents
   end
 
   it "accepts a length, and empty options Hash" do
-    IO.read(@fname, 3, {}).should == @contents[0, 3]
+    IO.read(@fname, 3, **{}).should == @contents[0, 3]
   end
 
   it "accepts a length, offset, and empty options Hash" do
-    IO.read(@fname, 3, 0, {}).should == @contents[0, 3]
+    IO.read(@fname, 3, 0, **{}).should == @contents[0, 3]
   end
 
   it "raises an IOError if the options Hash specifies write mode" do
-    -> { IO.read(@fname, 3, 0, {mode: "w"}) }.should raise_error(IOError)
+    -> { IO.read(@fname, 3, 0, mode: "w") }.should raise_error(IOError)
   end
 
   it "raises an IOError if the options Hash specifies append only mode" do
-    -> { IO.read(@fname, {mode: "a"}) }.should raise_error(IOError)
+    -> { IO.read(@fname, mode: "a") }.should raise_error(IOError)
   end
 
   it "reads the file if the options Hash includes read mode" do
-    IO.read(@fname, {mode: "r"}).should == @contents
+    IO.read(@fname, mode: "r").should == @contents
   end
 
   it "reads the file if the options Hash includes read/write mode" do
-    IO.read(@fname, {mode: "r+"}).should == @contents
+    IO.read(@fname, mode: "r+").should == @contents
   end
 
   it "reads the file if the options Hash includes read/write append mode" do
-    IO.read(@fname, {mode: "a+"}).should == @contents
+    IO.read(@fname, mode: "a+").should == @contents
   end
 
   it "treats second nil argument as no length limit" do
diff --git a/spec/ruby/core/io/reopen_spec.rb b/spec/ruby/core/io/reopen_spec.rb
index 133ff03ea5..975f654b66 100644
--- a/spec/ruby/core/io/reopen_spec.rb
+++ b/spec/ruby/core/io/reopen_spec.rb
@@ -230,7 +230,7 @@ describe "IO#reopen with an IO" do
     end
 
     @io = new_io @name
-    @other_io = new_io @other_name, "r"
+    @other_io = IO.new(new_fd(@other_name, "r"), "r")
   end
 
   after :each do
diff --git a/spec/ruby/core/io/shared/binwrite.rb b/spec/ruby/core/io/shared/binwrite.rb
index 17682a1a93..29310e1eaf 100644
--- a/spec/ruby/core/io/shared/binwrite.rb
+++ b/spec/ruby/core/io/shared/binwrite.rb
@@ -56,7 +56,7 @@ describe :io_binwrite, shared: true do
   end
 
   it "doesn't truncate and writes at the given offset after passing empty opts" do
-    IO.send(@method, @filename, "hello world!", 1, {})
+    IO.send(@method, @filename, "hello world!", 1, **{})
     File.read(@filename).should == "0hello world!34567890123456789"
   end
 
@@ -72,7 +72,7 @@ describe :io_binwrite, shared: true do
   end
 
   it "truncates if empty :opts provided and offset skipped" do
-    IO.send(@method, @filename, "hello, world!", {})
+    IO.send(@method, @filename, "hello, world!", **{})
     File.read(@filename).should == "hello, world!"
   end
 end
diff --git a/spec/ruby/core/io/shared/new.rb b/spec/ruby/core/io/shared/new.rb
index 2101958170..cc76955784 100644
--- a/spec/ruby/core/io/shared/new.rb
+++ b/spec/ruby/core/io/shared/new.rb
@@ -89,59 +89,59 @@ describe :io_new, shared: true do
   end
 
   it "uses the external encoding specified via the :external_encoding option" do
-    @io = IO.send(@method, @fd, 'w', {external_encoding: 'utf-8'})
+    @io = IO.send(@method, @fd, 'w', external_encoding: 'utf-8')
     @io.external_encoding.to_s.should == 'UTF-8'
   end
 
   it "uses the internal encoding specified via the :internal_encoding option" do
-    @io = IO.send(@method, @fd, 'w', {internal_encoding: 'ibm866'})
+    @io = IO.send(@method, @fd, 'w', internal_encoding: 'ibm866')
     @io.internal_encoding.to_s.should == 'IBM866'
   end
 
   it "uses the colon-separated encodings specified via the :encoding option" do
-    @io = IO.send(@method, @fd, 'w', {encoding: 'utf-8:ISO-8859-1'})
+    @io = IO.send(@method, @fd, 'w', encoding: 'utf-8:ISO-8859-1')
     @io.external_encoding.to_s.should == 'UTF-8'
     @io.internal_encoding.to_s.should == 'ISO-8859-1'
   end
 
   it "uses the :encoding option as the external encoding when only one is given" do
-    @io = IO.send(@method, @fd, 'w', {encoding: 'ISO-8859-1'})
+    @io = IO.send(@method, @fd, 'w', encoding: 'ISO-8859-1')
     @io.external_encoding.to_s.should == 'ISO-8859-1'
   end
 
   it "uses the :encoding options as the external encoding when it's an Encoding object" do
-    @io = IO.send(@method, @fd, 'w', {encoding: Encoding::ISO_8859_1})
+    @io = IO.send(@method, @fd, 'w', encoding: Encoding::ISO_8859_1)
     @io.external_encoding.should == Encoding::ISO_8859_1
   end
 
   it "ignores the :encoding option when the :external_encoding option is present" do
     -> {
-      @io = IO.send(@method, @fd, 'w', {external_encoding: 'utf-8', encoding: 'iso-8859-1:iso-8859-1'})
+      @io = IO.send(@method, @fd, 'w', external_encoding: 'utf-8', encoding: 'iso-8859-1:iso-8859-1')
     }.should complain(/Ignoring encoding parameter/)
     @io.external_encoding.to_s.should == 'UTF-8'
   end
 
   it "ignores the :encoding option when the :internal_encoding option is present" do
     -> {
-      @io = IO.send(@method, @fd, 'w', {internal_encoding: 'ibm866', encoding: 'iso-8859-1:iso-8859-1'})
+      @io = IO.send(@method, @fd, 'w', internal_encoding: 'ibm866', encoding: 'iso-8859-1:iso-8859-1')
     }.should complain(/Ignoring encoding parameter/)
     @io.internal_encoding.to_s.should == 'IBM866'
   end
 
   it "uses the encoding specified via the :mode option hash" do
-    @io = IO.send(@method, @fd, {mode: 'w:utf-8:ISO-8859-1'})
+    @io = IO.send(@method, @fd, mode: 'w:utf-8:ISO-8859-1')
     @io.external_encoding.to_s.should == 'UTF-8'
     @io.internal_encoding.to_s.should == 'ISO-8859-1'
   end
 
   it "ignores the :internal_encoding option when the same as the external encoding" do
-    @io = IO.send(@method, @fd, 'w', {external_encoding: 'utf-8', internal_encoding: 'utf-8'})
+    @io = IO.send(@method, @fd, 'w', external_encoding: 'utf-8', internal_encoding: 'utf-8')
     @io.external_encoding.to_s.should == 'UTF-8'
     @io.internal_encoding.to_s.should == ''
   end
 
   it "sets internal encoding to nil when passed '-'" do
-    @io = IO.send(@method, @fd, 'w', {external_encoding: 'utf-8', internal_encoding: '-'})
+    @io = IO.send(@method, @fd, 'w', external_encoding: 'utf-8', internal_encoding: '-')
     @io.external_encoding.to_s.should == 'UTF-8'
     @io.internal_encoding.to_s.should == ''
   end
@@ -157,12 +157,12 @@ describe :io_new, shared: true do
   end
 
   it "sets binmode from :binmode option" do
-    @io = IO.send(@method, @fd, 'w', {binmode: true})
+    @io = IO.send(@method, @fd, 'w', binmode: true)
     @io.binmode?.should == true
   end
 
   it "does not set binmode from false :binmode" do
-    @io = IO.send(@method, @fd, 'w', {binmode: false})
+    @io = IO.send(@method, @fd, 'w', binmode: false)
     @io.binmode?.should == false
   end
 
@@ -173,7 +173,7 @@ describe :io_new, shared: true do
 
   # #5917
   it "sets external encoding to binary with :binmode option" do
-    @io = IO.send(@method, @fd, 'w', {binmode: true})
+    @io = IO.send(@method, @fd, 'w', binmode: true)
     @io.external_encoding.should == Encoding::BINARY
   end
 
@@ -198,7 +198,9 @@ describe :io_new, shared: true do
   end
 
   it "accepts nil options" do
-    @io = IO.send(@method, @fd, 'w', nil)
+    @io = suppress_keyword_warning do
+      IO.send(@method, @fd, 'w', nil)
+    end
     @io.write("foo").should == 3
   end
 
@@ -247,13 +249,13 @@ describe :io_new, shared: true do
   it "coerces options as third argument with #to_hash" do
     options = mock("options")
     options.should_receive(:to_hash).and_return({})
-    @io = IO.send(@method, @fd, 'w', options)
+    @io = IO.send(@method, @fd, 'w', **options)
   end
 
   it "coerces options as second argument with #to_hash" do
     options = mock("options")
     options.should_receive(:to_hash).and_return({})
-    @io = IO.send(@method, @fd, options)
+    @io = IO.send(@method, @fd, **options)
   end
 
   it "accepts an :autoclose option" do
@@ -307,13 +309,13 @@ describe :io_new_errors, shared: true do
 
   it "raises an error if passed encodings two ways" do
     -> {
-      @io = IO.send(@method, @fd, 'w:ISO-8859-1', {encoding: 'ISO-8859-1'})
+      @io = IO.send(@method, @fd, 'w:ISO-8859-1', encoding: 'ISO-8859-1')
     }.should raise_error(ArgumentError)
     -> {
-      @io = IO.send(@method, @fd, 'w:ISO-8859-1', {external_encoding: 'ISO-8859-1'})
+      @io = IO.send(@method, @fd, 'w:ISO-8859-1', external_encoding: 'ISO-8859-1')
     }.should raise_error(ArgumentError)
     -> {
-      @io = IO.send(@method, @fd, 'w:ISO-8859-1:UTF-8', {internal_encoding: 'ISO-8859-1'})
+      @io = IO.send(@method, @fd, 'w:ISO-8859-1:UTF-8', internal_encoding: 'ISO-8859-1')
     }.should raise_error(ArgumentError)
   end
 
@@ -372,7 +374,9 @@ describe :io_new_errors, shared: true do
 
   it "raises TypeError if passed a hash for mode and nil for options" do
     -> {
-      @io = IO.send(@method, @fd, {mode: 'w'}, nil)
+      suppress_keyword_warning do
+        @io = IO.send(@method, @fd, {mode: 'w'}, nil)
+      end
     }.should raise_error(TypeError)
   end
 end
diff --git a/spec/ruby/core/io/shared/readlines.rb b/spec/ruby/core/io/shared/readlines.rb
index 9bc02da0bd..de803f42e5 100644
--- a/spec/ruby/core/io/shared/readlines.rb
+++ b/spec/ruby/core/io/shared/readlines.rb
@@ -107,7 +107,7 @@ describe :io_readlines_options_19, shared: true do
         options = mock("io readlines options Hash")
         options.should_receive(:to_hash).and_return({ mode: "w" })
         -> do
-          IO.send(@method, @filename, 10, options, &@object)
+          IO.send(@method, @filename, 10, **options, &@object)
         end.should raise_error(IOError)
       end
     end
@@ -135,7 +135,7 @@ describe :io_readlines_options_19, shared: true do
         options = mock("io readlines options Hash")
         options.should_receive(:to_hash).and_return({ mode: "w" })
         -> do
-          IO.send(@method, @filename, " ", options, &@object)
+          IO.send(@method, @filename, " ", **options, &@object)
         end.should raise_error(IOError)
       end
     end
@@ -170,7 +170,7 @@ describe :io_readlines_options_19, shared: true do
         options = mock("io readlines options Hash")
         options.should_receive(:to_hash).and_return({ mode: "w" })
         -> do
-          IO.send(@method, @filename, " ", options, &@object)
+          IO.send(@method, @filename, " ", **options, &@object)
         end.should raise_error(IOError)
       end
     end
@@ -202,7 +202,7 @@ describe :io_readlines_options_19, shared: true do
       options = mock("io readlines options Hash")
       options.should_receive(:to_hash).and_return({ mode: "w" })
       -> do
-        IO.send(@method, @filename, " ", 10, options, &@object)
+        IO.send(@method, @filename, " ", 10, **options, &@object)
       end.should raise_error(IOError)
     end
   end
diff --git a/spec/ruby/core/method/fixtures/classes.rb b/spec/ruby/core/method/fixtures/classes.rb
index 315672c6e0..f3b7ff921c 100644
--- a/spec/ruby/core/method/fixtures/classes.rb
+++ b/spec/ruby/core/method/fixtures/classes.rb
@@ -26,6 +26,7 @@ module MethodSpecs
     end
 
     alias bar foo
+    alias baz bar
 
     def same_as_foo
       true
diff --git a/spec/ruby/core/method/original_name_spec.rb b/spec/ruby/core/method/original_name_spec.rb
new file mode 100644
index 0000000000..676fdaedb4
--- /dev/null
+++ b/spec/ruby/core/method/original_name_spec.rb
@@ -0,0 +1,22 @@
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
+
+describe "Method#original_name" do
+  it "returns the name of the method" do
+    "abc".method(:upcase).original_name.should == :upcase
+  end
+
+  it "returns the original name when aliased" do
+    obj = MethodSpecs::Methods.new
+    obj.method(:foo).original_name.should == :foo
+    obj.method(:bar).original_name.should == :foo
+    obj.method(:bar).unbind.bind(obj).original_name.should == :foo
+  end
+
+  it "returns the original name even when aliased twice" do
+    obj = MethodSpecs::Methods.new
+    obj.method(:foo).original_name.should == :foo
+    obj.method(:baz).original_name.should == :foo
+    obj.method(:baz).unbind.bind(obj).original_name.should == :foo
+  end
+end
diff --git a/spec/ruby/core/numeric/shared/step.rb b/spec/ruby/core/numeric/shared/step.rb
index b0cbbd0585..364d4769ad 100644
--- a/spec/ruby/core/numeric/shared/step.rb
+++ b/spec/ruby/core/numeric/shared/step.rb
@@ -2,7 +2,7 @@ require_relative '../../../spec_helper'
 require_relative '../fixtures/classes'
 
 # Describes Numeric#step shared specs between different argument styles.
-# To be able to do it, the @step_args var must contain a Proc that transforms
+# To be able to do it, the @step ivar must contain a Proc that transforms
 # the step call arguments passed as positional arguments to the style of
 # arguments pretended to test.
 describe :numeric_step, :shared => true do
@@ -12,7 +12,7 @@ describe :numeric_step, :shared => true do
   end
 
   it "defaults to step = 1" do
-    1.send(@method, *@step_args.call(5), &@prc)
+    @step.call(1, 5, &@prc)
     ScratchPad.recorded.should eql [1, 2, 3, 4, 5]
   end
 
@@ -26,39 +26,39 @@ describe :numeric_step, :shared => true do
 
   describe "when self, stop and step are Fixnums" do
     it "yields only Fixnums" do
-      1.send(@method, *@step_args.call(5, 1)) { |x| x.should be_an_instance_of(Fixnum) }
+      @step.call(1, 5, 1) { |x| x.should be_an_instance_of(Fixnum) }
     end
 
     describe "with a positive step" do
       it "yields while increasing self by step until stop is reached" do
-        1.send(@method, *@step_args.call(5, 1), &@prc)
+        @step.call(1, 5, 1, &@prc)
         ScratchPad.recorded.should eql [1, 2, 3, 4, 5]
       end
 
       it "yields once when self equals stop" do
-        1.send(@method, *@step_args.call(1, 1), &@prc)
+        @step.call(1, 1, 1, &@prc)
         ScratchPad.recorded.should eql [1]
       end
 
       it "does not yield when self is greater than stop" do
-        2.send(@method, *@step_args.call(1, 1), &@prc)
+        @step.call(2, 1, 1, &@prc)
         ScratchPad.recorded.should eql []
       end
     end
 
     describe "with a negative step" do
       it "yields while decreasing self by step until stop is reached" do
-        5.send(@method, *@step_args.call(1, -1), &@prc)
+        @step.call(5, 1, -1, &@prc)
         ScratchPad.recorded.should eql [5, 4, 3, 2, 1]
       end
 
       it "yields once when self equals stop" do
-        5.send(@method, *@step_args.call(5, -1), &@prc)
+        @step.call(5, 5, -1, &@prc)
         ScratchPad.recorded.should eql [5]
       end
 
       it "does not yield when self is less than stop" do
-        1.send(@method, *@step_args.call(5, -1), &@prc)
+        @step.call(1, 5, -1, &@prc)
         ScratchPad.recorded.should == []
       end
     end
@@ -66,156 +66,157 @@ describe :numeric_step, :shared => true do
 
   describe "when at least one of self, stop or step is a Float" do
     it "yields Floats even if only self is a Float" do
-      1.5.send(@method, *@step_args.call(5, 1)) { |x| x.should be_an_instance_of(Float) }
+      @step.call(1.5, 5, 1) { |x| x.should be_an_instance_of(Float) }
     end
 
     it "yields Floats even if only stop is a Float" do
-      1.send(@method, *@step_args.call(5.0, 1)) { |x| x.should be_an_instance_of(Float) }
+      @step.call(1, 5.0, 1) { |x| x.should be_an_instance_of(Float) }
     end
 
     it "yields Floats even if only step is a Float" do
-      1.send(@method, *@step_args.call(5, 1.0)) { |x| x.should be_an_instance_of(Float) }
+      @step.call(1, 5, 1.0) { |x| x.should be_an_instance_of(Float) }
     end
 
     describe "with a positive step" do
       it "yields while increasing self by step while < stop" do
-        1.5.send(@method, *@step_args.call(5, 1), &@prc)
+        @step.call(1.5, 5, 1, &@prc)
         ScratchPad.recorded.should eql [1.5, 2.5, 3.5, 4.5]
       end
 
       it "yields once when self equals stop" do
-        1.5.send(@method, *@step_args.call(1.5, 1), &@prc)
+        @step.call(1.5, 1.5, 1, &@prc)
         ScratchPad.recorded.should eql [1.5]
       end
 
       it "does not yield when self is greater than stop" do
-        2.5.send(@method, *@step_args.call(1.5, 1), &@prc)
+        @step.call(2.5, 1.5, 1, &@prc)
         ScratchPad.recorded.should == []
       end
 
       it "is careful about not yielding a value greater than limit" do
         # As 9*1.3+1.0 == 12.700000000000001 > 12.7, we test:
-        1.0.send(@method, *@step_args.call(12.7, 1.3), &@prc)
+        @step.call(1.0, 12.7, 1.3, &@prc)
         ScratchPad.recorded.should eql [1.0, 2.3, 3.6, 4.9, 6.2, 7.5, 8.8, 10.1, 11.4, 12.7]
       end
     end
 
     describe "with a negative step" do
       it "yields while decreasing self by step while self > stop" do
-        5.send(@method, *@step_args.call(1.5, -1), &@prc)
+        @step.call(5, 1.5, -1, &@prc)
         ScratchPad.recorded.should eql [5.0, 4.0, 3.0, 2.0]
       end
 
       it "yields once when self equals stop" do
-        1.5.send(@method, *@step_args.call(1.5, -1), &@prc)
+        @step.call(1.5, 1.5, -1, &@prc)
         ScratchPad.recorded.should eql [1.5]
       end
 
       it "does not yield when self is less than stop" do
-        1.send(@method, *@step_args.call(5, -1.5), &@prc)
+        @step.call(1, 5, -1.5, &@prc)
         ScratchPad.recorded.should == []
       end
 
       it "is careful about not yielding a value smaller than limit" do
         # As -9*1.3-1.0 == -12.700000000000001 < -12.7, we test:
-        -1.0.send(@method, *@step_args.call(-12.7, -1.3), &@prc)
+        @step.call(-1.0, -12.7, -1.3, &@prc)
         ScratchPad.recorded.should eql [-1.0, -2.3, -3.6, -4.9, -6.2, -7.5, -8.8, -10.1, -11.4, -12.7]
       end
     end
 
     describe "with a positive Infinity step" do
       it "yields once if self < stop" do
-        42.send(@method, *@step_args.call(100, infinity_value), &@prc)
+        @step.call(42, 100, infinity_value, &@prc)
         ScratchPad.recorded.should eql [42.0]
       end
 
       it "yields once when stop is Infinity" do
-        42.send(@method, *@step_args.call(infinity_value, infinity_value), &@prc)
+        @step.call(42, infinity_value, infinity_value, &@prc)
         ScratchPad.recorded.should eql [42.0]
       end
 
       it "yields once when self equals stop" do
-        42.send(@method, *@step_args.call(42, infinity_value), &@prc)
+        @step.call(42, 42, infinity_value, &@prc)
         ScratchPad.recorded.should eql [42.0]
       end
 
       it "yields once when self and stop are Infinity" do
-        (infinity_value).send(@method, *@step_args.call(infinity_value, infinity_value), &@prc)
+        # @step.call(infinity_value, infinity_value, infinity_value, &@prc)
+        @step.call(infinity_value, infinity_value, infinity_value, &@prc)
         ScratchPad.recorded.should == [infinity_value]
       end
 
       it "does not yield when self > stop" do
-        100.send(@method, *@step_args.call(42, infinity_value), &@prc)
+        @step.call(100, 42, infinity_value, &@prc)
         ScratchPad.recorded.should == []
       end
 
       it "does not yield when stop is -Infinity" do
-        42.send(@method, *@step_args.call(-infinity_value, infinity_value), &@prc)
+        @step.call(42, -infinity_value, infinity_value, &@prc)
         ScratchPad.recorded.should == []
       end
     end
 
     describe "with a negative Infinity step" do
       it "yields once if self > stop" do
-        42.send(@method, *@step_args.call(6, -infinity_value), &@prc)
+        @step.call(42, 6, -infinity_value, &@prc)
         ScratchPad.recorded.should eql [42.0]
       end
 
       it "yields once if stop is -Infinity" do
-        42.send(@method, *@step_args.call(-infinity_value, -infinity_value), &@prc)
+        @step.call(42, -infinity_value, -infinity_value, &@prc)
         ScratchPad.recorded.should eql [42.0]
       end
 
       it "yields once when self equals stop" do
-        42.send(@method, *@step_args.call(42, -infinity_value), &@prc)
+        @step.call(42, 42, -infinity_value, &@prc)
         ScratchPad.recorded.should eql [42.0]
       end
 
       it "yields once when self and stop are Infinity" do
-        (infinity_value).send(@method, *@step_args.call(infinity_value, -infinity_value), &@prc)
+        @step.call(infinity_value, infinity_value, -infinity_value, &@prc)
         ScratchPad.recorded.should == [infinity_value]
       end
 
       it "does not yield when self > stop" do
-        42.send(@method, *@step_args.call(100, -infinity_value), &@prc)
+        @step.call(42, 100, -infinity_value, &@prc)
         ScratchPad.recorded.should == []
       end
 
       it "does not yield when stop is Infinity" do
-        42.send(@method, *@step_args.call(infinity_value, -infinity_value), &@prc)
+        @step.call(42, infinity_value, -infinity_value, &@prc)
         ScratchPad.recorded.should == []
       end
     end
 
     describe "with a Infinity stop and a positive step" do
       it "does not yield when self is infinity" do
-        (infinity_value).send(@method, *@step_args.call(infinity_value, 1), &@prc)
+        @step.call(infinity_value, infinity_value, 1, &@prc)
         ScratchPad.recorded.should == []
       end
     end
 
     describe "with a Infinity stop and a negative step" do
       it "does not yield when self is negative infinity" do
-        (-infinity_value).send(@method, *@step_args.call(infinity_value, -1), &@prc)
+        @step.call(-infinity_value, infinity_value, -1, &@prc)
         ScratchPad.recorded.should == []
       end
 
       it "does not yield when self is positive infinity" do
-        infinity_value.send(@method, *@step_args.call(infinity_value, -1), &@prc)
+        @step.call(infinity_value, infinity_value, -1, &@prc)
         ScratchPad.recorded.should == []
       end
     end
 
     describe "with a negative Infinity stop and a positive step" do
       it "does not yield when self is negative infinity" do
-        (-infinity_value).send(@method, *@step_args.call(-infinity_value, 1), &@prc)
+        @step.call(-infinity_value, -infinity_value, 1, &@prc)
         ScratchPad.recorded.should == []
       end
     end
 
     describe "with a negative Infinity stop and a negative step" do
       it "does not yield when self is negative infinity" do
-        (-infinity_value).send(@method, *@step_args.call(-infinity_value, -1), &@prc)
+        @step.call(-infinity_value, -infinity_value, -1, &@prc)
         ScratchPad.recorded.should == []
       end
     end
@@ -233,33 +234,33 @@ describe :numeric_step, :shared => true do
 
     describe "with self and stop as Fixnums" do
       it "raises an #{error} when step is a numeric representation" do
-        -> { 1.send(@method, *@step_args.call(5, "1")) {} }.should raise_error(error)
-        -> { 1.send(@method, *@step_args.call(5, "0.1")) {} }.should raise_error(error)
-        -> { 1.send(@method, *@step_args.call(5, "1/3")) {} }.should raise_error(error)
+        -> { @step.call(1, 5, "1") {} }.should raise_error(error)
+        -> { @step.call(1, 5, "0.1") {} }.should raise_error(error)
+        -> { @step.call(1, 5, "1/3") {} }.should raise_error(error)
       end
       it "raises an #{error} with step as an alphanumeric string" do
-        -> { 1.send(@method, *@step_args.call(5, "foo")) {} }.should raise_error(error)
+        -> { @step.call(1, 5, "foo") {} }.should raise_error(error)
       end
     end
 
     describe "with self and stop as Floats" do
       it "raises an #{error} when step is a numeric representation" do
-        -> { 1.1.send(@method, *@step_args.call(5.1, "1")) {} }.should raise_error(error)
-        -> { 1.1.send(@method, *@step_args.call(5.1, "0.1")) {} }.should raise_error(error)
-        -> { 1.1.send(@method, *@step_args.call(5.1, "1/3")) {} }.should raise_error(error)
+        -> { @step.call(1.1, 5.1, "1") {} }.should raise_error(error)
+        -> { @step.call(1.1, 5.1, "0.1") {} }.should raise_error(error)
+        -> { @step.call(1.1, 5.1, "1/3") {} }.should raise_error(error)
       end
       it "raises an #{error} with step as an alphanumeric string" do
-        -> { 1.1.send(@method, *@step_args.call(5.1, "foo")) {} }.should raise_error(error)
+        -> { @step.call(1.1, 5.1, "foo") {} }.should raise_error(error)
       end
     end
   end
 
   it "does not rescue ArgumentError exceptions" do
-    -> { 1.send(@method, *@step_args.call(2)) { raise ArgumentError, "" }}.should raise_error(ArgumentError)
+    -> { @step.call(1, 2) { raise ArgumentError, "" }}.should raise_error(ArgumentError)
   end
 
   it "does not rescue TypeError exceptions" do
-    -> { 1.send(@method, *@step_args.call(2)) { raise TypeError, "" } }.should raise_error(TypeError)
+    -> { @step.call(1, 2) { raise TypeError, "" } }.should raise_error(TypeError)
   end
 
   describe "when no block is given" do
@@ -269,31 +270,31 @@ describe :numeric_step, :shared => true do
     end
 
     it "returns an #{step_enum_class} when step is 0" do
-      1.send(@method, *@step_args.call(2, 0)).should be_an_instance_of(step_enum_class)
+      @step.call(1, 2, 0).should be_an_instance_of(step_enum_class)
     end
 
     it "returns an #{step_enum_class} when not passed a block and self > stop" do
-      1.send(@method, *@step_args.call(0, 2)).should be_an_instance_of(step_enum_class)
+      @step.call(1, 0, 2).should be_an_instance_of(step_enum_class)
     end
 
     it "returns an #{step_enum_class} when not passed a block and self < stop" do
-      1.send(@method, *@step_args.call(2, 3)).should be_an_instance_of(step_enum_class)
+      @step.call(1, 2, 3).should be_an_instance_of(step_enum_class)
     end
 
     it "returns an #{step_enum_class} that uses the given step" do
-      0.send(@method, *@step_args.call(5, 2)).to_a.should eql [0, 2, 4]
+      @step.call(0, 5, 2).to_a.should eql [0, 2, 4]
     end
 
     describe "when step is a String" do
       describe "with self and stop as Fixnums" do
         it "returns an Enumerator" do
-          1.send(@method, *@step_args.call(5, "foo")).should be_an_instance_of(Enumerator)
+          @step.call(1, 5, "foo").should be_an_instance_of(Enumerator)
         end
       end
 
       describe "with self and stop as Floats" do
         it "returns an Enumerator" do
-          1.1.send(@method, *@step_args.call(5.1, "foo")).should be_an_instance_of(Enumerator)
+          @step.call(1.1, 5.1, "foo").should be_an_instance_of(Enumerator)
         end
       end
     end
@@ -311,119 +312,119 @@ describe :numeric_step, :shared => true do
 
           describe "with self and stop as Fixnums" do
             it "raises an #{error} when step is a numeric representation" do
-              -> { 1.send(@method, *@step_args.call(5, "1")).size }.should raise_error(error)
-              -> { 1.send(@method, *@step_args.call(5, "0.1")).size }.should raise_error(error)
-              -> { 1.send(@method, *@step_args.call(5, "1/3")).size }.should raise_error(error)
+              -> { @step.call(1, 5, "1").size }.should raise_error(error)
+              -> { @step.call(1, 5, "0.1").size }.should raise_error(error)
+              -> { @step.call(1, 5, "1/3").size }.should raise_error(error)
             end
             it "raises an #{error} with step as an alphanumeric string" do
-              -> { 1.send(@method, *@step_args.call(5, "foo")).size }.should raise_error(error)
+              -> { @step.call(1, 5, "foo").size }.should raise_error(error)
             end
           end
 
           describe "with self and stop as Floats" do
             it "raises an #{error} when step is a numeric representation" do
-              -> { 1.1.send(@method, *@step_args.call(5.1, "1")).size }.should raise_error(error)
-              -> { 1.1.send(@method, *@step_args.call(5.1, "0.1")).size }.should raise_error(error)
-              -> { 1.1.send(@method, *@step_args.call(5.1, "1/3")).size }.should raise_error(error)
+              -> { @step.call(1.1, 5.1, "1").size }.should raise_error(error)
+              -> { @step.call(1.1, 5.1, "0.1").size }.should raise_error(error)
+              -> { @step.call(1.1, 5.1, "1/3").size }.should raise_error(error)
             end
             it "raises an #{error} with step as an alphanumeric string" do
-              -> { 1.1.send(@method, *@step_args.call(5.1, "foo")).size }.should raise_error(error)
+              -> { @step.call(1.1, 5.1, "foo").size }.should raise_error(error)
             end
           end
         end
 
         describe "when self, stop and step are Fixnums and step is positive" do
           it "returns the difference between self and stop divided by the number of steps" do
-            5.send(@method, *@step_args.call(10, 11)).size.should == 1
-            5.send(@method, *@step_args.call(10, 6)).size.should == 1
-            5.send(@method, *@step_args.call(10, 5)).size.should == 2
-            5.send(@method, *@step_args.call(10, 4)).size.should == 2
-            5.send(@method, *@step_args.call(10, 2)).size.should == 3
-            5.send(@method, *@step_args.call(10, 1)).size.should == 6
-            5.send(@method, *@step_args.call(10)).size.should == 6
-            10.send(@method, *@step_args.call(10, 1)).size.should == 1
+            @step.call(5, 10, 11).size.should == 1
+            @step.call(5, 10, 6).size.should == 1
+            @step.call(5, 10, 5).size.should == 2
+            @step.call(5, 10, 4).size.should == 2
+            @step.call(5, 10, 2).size.should == 3
+            @step.call(5, 10, 1).size.should == 6
+            @step.call(5, 10).size.should == 6
+            @step.call(10, 10, 1).size.should == 1
           end
 
           it "returns 0 if value > limit" do
-            11.send(@method, *@step_args.call(10, 1)).size.should == 0
+            @step.call(11, 10, 1).size.should == 0
           end
         end
 
         describe "when self, stop and step are Fixnums and step is negative" do
           it "returns the difference between self and stop divided by the number of steps" do
-            10.send(@method, *@step_args.call(5, -11)).size.should == 1
-            10.send(@method, *@step_args.call(5, -6)).size.should == 1
-            10.send(@method, *@step_args.call(5, -5)).size.should == 2
-            10.send(@method, *@step_args.call(5, -4)).size.should == 2
-            10.send(@method, *@step_args.call(5, -2)).size.should == 3
-            10.send(@method, *@step_args.call(5, -1)).size.should == 6
-            10.send(@method, *@step_args.call(10, -1)).size.should == 1
+            @step.call(10, 5, -11).size.should == 1
+            @step.call(10, 5, -6).size.should == 1
+            @step.call(10, 5, -5).size.should == 2
+            @step.call(10, 5, -4).size.should == 2
+            @step.call(10, 5, -2).size.should == 3
+            @step.call(10, 5, -1).size.should == 6
+            @step.call(10, 10, -1).size.should == 1
           end
 
           it "returns 0 if value < limit" do
-            10.send(@method, *@step_args.call(11, -1)).size.should == 0
+            @step.call(10, 11, -1).size.should == 0
           end
         end
 
         describe "when self, stop or step is a Float" do
           describe "and step is positive" do
             it "returns the difference between self and stop divided by the number of steps" do
-              5.send(@method, *@step_args.call(10, 11.0)).size.should == 1
-              5.send(@method, *@step_args.call(10, 6.0)).size.should == 1
-              5.send(@method, *@step_args.call(10, 5.0)).size.should == 2
-              5.send(@method, *@step_args.call(10, 4.0)).size.should == 2
-              5.send(@method, *@step_args.call(10, 2.0)).size.should == 3
-              5.send(@method, *@step_args.call(10, 0.5)).size.should == 11
-              5.send(@method, *@step_args.call(10, 1.0)).size.should == 6
-              5.send(@method, *@step_args.call(10.5)).size.should == 6
-              10.send(@method, *@step_args.call(10, 1.0)).size.should == 1
+              @step.call(5, 10, 11.0).size.should == 1
+              @step.call(5, 10, 6.0).size.should == 1
+              @step.call(5, 10, 5.0).size.should == 2
+              @step.call(5, 10, 4.0).size.should == 2
+              @step.call(5, 10, 2.0).size.should == 3
+              @step.call(5, 10, 0.5).size.should == 11
+              @step.call(5, 10, 1.0).size.should == 6
+              @step.call(5, 10.5).size.should == 6
+              @step.call(10, 10, 1.0).size.should == 1
             end
 
             it "returns 0 if value > limit" do
-              10.send(@method, *@step_args.call(5.5)).size.should == 0
-              11.send(@method, *@step_args.call(10, 1.0)).size.should == 0
-              11.send(@method, *@step_args.call(10, 1.5)).size.should == 0
-              10.send(@method, *@step_args.call(5, infinity_value)).size.should == 0
+              @step.call(10, 5.5).size.should == 0
+              @step.call(11, 10, 1.0).size.should == 0
+              @step.call(11, 10, 1.5).size.should == 0
+              @step.call(10, 5, infinity_value).size.should == 0
             end
 
             it "returns 1 if step is infinity_value" do
-              5.send(@method, *@step_args.call(10, infinity_value)).size.should == 1
+              @step.call(5, 10, infinity_value).size.should == 1
             end
           end
 
           describe "and step is negative" do
             it "returns the difference between self and stop divided by the number of steps" do
-              10.send(@method, *@step_args.call(5, -11.0)).size.should == 1
-              10.send(@method, *@step_args.call(5, -6.0)).size.should == 1
-              10.send(@method, *@step_args.call(5, -5.0)).size.should == 2
-              10.send(@method, *@step_args.call(5, -4.0)).size.should == 2
-              10.send(@method, *@step_args.call(5, -2.0)).size.should == 3
-              10.send(@method, *@step_args.call(5, -0.5)).size.should == 11
-              10.send(@method, *@step_args.call(5, -1.0)).size.should == 6
-              10.send(@method, *@step_args.call(10, -1.0)).size.should == 1
+              @step.call(10, 5, -11.0).size.should == 1
+              @step.call(10, 5, -6.0).size.should == 1
+              @step.call(10, 5, -5.0).size.should == 2
+              @step.call(10, 5, -4.0).size.should == 2
+              @step.call(10, 5, -2.0).size.should == 3
+              @step.call(10, 5, -0.5).size.should == 11
+              @step.call(10, 5, -1.0).size.should == 6
+              @step.call(10, 10, -1.0).size.should == 1
             end
 
             it "returns 0 if value < limit" do
-              10.send(@method, *@step_args.call(11, -1.0)).size.should == 0
-              10.send(@method, *@step_args.call(11, -1.5)).size.should == 0
-              5.send(@method, *@step_args.call(10, -infinity_value)).size.should == 0
+              @step.call(10, 11, -1.0).size.should == 0
+              @step.call(10, 11, -1.5).size.should == 0
+              @step.call(5, 10, -infinity_value).size.should == 0
             end
 
             it "returns 1 if step is infinity_value" do
-              10.send(@method, *@step_args.call(5, -infinity_value)).size.should == 1
+              @step.call(10, 5, -infinity_value).size.should == 1
             end
           end
         end
 
         describe "when stop is not passed" do
           it "returns infinity_value" do
-            1.send(@method, *@step_args.call()).size.should == infinity_value
+            @step.call(1).size.should == infinity_value
           end
         end
 
         describe "when stop is nil" do
           it "returns infinity_value" do
-            1.send(@method, *@step_args.call(nil, 5)).size.should == infinity_value
+            @step.call(1, nil, 5).size.should == infinity_value
           end
         end
       end
diff --git a/spec/ruby/core/numeric/step_spec.rb b/spec/ruby/core/numeric/step_spec.rb
index fc80cc4ab0..e9067864c8 100644
--- a/spec/ruby/core/numeric/step_spec.rb
+++ b/spec/ruby/core/numeric/step_spec.rb
@@ -16,9 +16,8 @@ describe "Numeric#step" do
     before :all do
       # This lambda definition limits to return the arguments it receives.
       # It's needed to test numeric_step behaviour with positional arguments.
-      @step_args = -> *args { args }
+      @step = -> receiver, *args, &block { receiver.step(*args, &block) }
     end
-
     it_behaves_like :numeric_step, :step
 
     describe "when no block is given" do
@@ -135,13 +134,12 @@ describe "Numeric#step" do
     end
 
     before :all do
-      # This lambda transforms a positional step method args into
-      # keyword arguments.
+      # This lambda transforms a positional step method args into  keyword arguments.
       # It's needed to test numeric_step behaviour with keyword arguments.
-      @step_args = -> *args do
-        kw_args = {to: args[0]}
+      @step = -> receiver, *args, &block do
+        kw_args = { to: args[0] }
         kw_args[:by] = args[1] if args.size == 2
-        [kw_args]
+        receiver.step(**kw_args, &block)
       end
     end
     it_behaves_like :numeric_step, :step
@@ -183,16 +181,17 @@ describe "Numeric#step" do
         end
       end
     end
+
     before :all do
       # This lambda definition transforms a positional step method args into
       # a mix of positional and keyword arguments.
       # It's needed to test numeric_step behaviour with positional mixed with
       # keyword arguments.
-      @step_args = -> *args do
+      @step = -> receiver, *args, &block do
         if args.size == 2
-          [args[0], {by: args[1]}]
+          receiver.step(args[0], by: args[1], &block)
         else
-          args
+          receiver.step(*args, &block)
         end
       end
     end
diff --git a/spec/ruby/core/random/rand_spec.rb b/spec/ruby/core/random/rand_spec.rb
index b585aa9737..d1a76e5dac 100644
--- a/spec/ruby/core/random/rand_spec.rb
+++ b/spec/ruby/core/random/rand_spec.rb
@@ -1,10 +1,11 @@
 require_relative '../../spec_helper'
 require_relative 'fixtures/classes'
+require_relative 'shared/rand'
 
 describe "Random.rand" do
-  it "returns a Float if no max argument is passed" do
-    Random.rand.should be_kind_of(Float)
-  end
+  it_behaves_like :random_number, :rand, Random.new
+  it_behaves_like :random_number, :random_number, Random.new
+  it_behaves_like :random_number, :rand, Random
 
   it "returns a Float >= 0 if no max argument is passed" do
     floats = 200.times.map { Random.rand }
@@ -24,10 +25,6 @@ describe "Random.rand" do
     floats_a.should == floats_b
   end
 
-  it "returns an Integer if an Integer argument is passed" do
-    Random.rand(20).should be_kind_of(Integer)
-  end
-
   it "returns an Integer >= 0 if an Integer argument is passed" do
     ints = 200.times.map { Random.rand(34) }
     ints.min.should >= 0
@@ -221,3 +218,9 @@ describe "Random#rand with Range" do
     end.should raise_error(ArgumentError)
   end
 end
+
+ruby_version_is "2.6" do
+  describe "Random.random_number" do
+    it_behaves_like :random_number, :random_number, Random
+  end
+end
diff --git a/spec/ruby/core/random/shared/bytes.rb b/spec/ruby/core/random/shared/bytes.rb
index fe8cd8d683..9afad3b7f8 100644
--- a/spec/ruby/core/random/shared/bytes.rb
+++ b/spec/ruby/core/random/shared/bytes.rb
@@ -1,17 +1,17 @@
 describe :random_bytes, shared: true do
   it "returns a String" do
-    @object.bytes(1).should be_an_instance_of(String)
+    @object.send(@method, 1).should be_an_instance_of(String)
   end
 
   it "returns a String of the length given as argument" do
-    @object.bytes(15).length.should == 15
+    @object.send(@method, 15).length.should == 15
   end
 
   it "returns a binary String" do
-    @object.bytes(15).encoding.should == Encoding::BINARY
+    @object.send(@method, 15).encoding.should == Encoding::BINARY
   end
 
   it "returns a random binary String" do
-    @object.bytes(12).should_not == @object.bytes(12)
+    @object.send(@method, 12).should_not == @object.send(@method, 12)
   end
 end
diff --git a/spec/ruby/core/random/shared/rand.rb b/spec/ruby/core/random/shared/rand.rb
new file mode 100644
index 0000000000..d3b24b8851
--- /dev/null
+++ b/spec/ruby/core/random/shared/rand.rb
@@ -0,0 +1,9 @@
+describe :random_number, shared: true do
+  it "returns a Float if no max argument is passed" do
+    @object.send(@method).should be_kind_of(Float)
+  end
+
+  it "returns an Integer if an Integer argument is passed" do
+    @object.send(@method, 20).should be_kind_of(Integer)
+  end
+end
diff --git a/spec/ruby/core/string/shared/encode.rb b/spec/ruby/core/string/shared/encode.rb
index b5a8bf9b72..a73de5b943 100644
--- a/spec/ruby/core/string/shared/encode.rb
+++ b/spec/ruby/core/string/shared/encode.rb
@@ -83,7 +83,7 @@ describe :string_encode, shared: true do
       options = mock("string encode options")
       options.should_receive(:to_hash).and_return({ undef: :replace })
 
-      result = "あ\ufffdあ".send(@method, options)
+      result = "あ\ufffdあ".send(@method, **options)
       result.should == "あ\ufffdあ"
     end
 
@@ -145,7 +145,7 @@ describe :string_encode, shared: true do
       options = mock("string encode options")
       options.should_receive(:to_hash).and_return({ undef: :replace })
 
-      result = "あ?あ".send(@method, Encoding::EUC_JP, options)
+      result = "あ?あ".send(@method, Encoding::EUC_JP, **options)
       xA4xA2 = [0xA4, 0xA2].pack('CC').force_encoding('utf-8')
       result.should == "#{xA4xA2}?#{xA4xA2}".force_encoding("euc-jp")
     end
@@ -189,7 +189,7 @@ describe :string_encode, shared: true do
 
       xFF = [0xFF].pack('C').force_encoding('utf-8')
       str = "ab#{xFF}c".force_encoding Encoding::BINARY
-      str.send(@method, "iso-8859-1", "utf-8", options).should == "ab?c"
+      str.send(@method, "iso-8859-1", "utf-8", **options).should == "ab?c"
     end
   end
 
diff --git a/spec/ruby/core/thread/backtrace/location/fixtures/classes.rb b/spec/ruby/core/thread/backtrace/location/fixtures/classes.rb
index 3e42d8cf81..e903c3e450 100644
--- a/spec/ruby/core/thread/backtrace/location/fixtures/classes.rb
+++ b/spec/ruby/core/thread/backtrace/location/fixtures/classes.rb
@@ -14,4 +14,22 @@ module ThreadBacktraceLocationSpecs
       return caller_locations(0)
     end
   end
+
+  def self.locations_inside_nested_blocks
+    first_level_location = nil
+    second_level_location = nil
+    third_level_location = nil
+
+    1.times do
+      first_level_location = locations[0]
+      1.times do
+        second_level_location = locations[0]
+        1.times do
+          third_level_location = locations[0]
+        end
+      end
+    end
+
+    [first_level_location, second_level_location, third_level_location]
+  end
 end
diff --git a/spec/ruby/core/thread/backtrace/location/fixtures/locations_in_main.rb b/spec/ruby/core/thread/backtrace/location/fixtures/locations_in_main.rb
new file mode 100644
index 0000000000..b124c8161c
--- /dev/null
+++ b/spec/ruby/core/thread/backtrace/location/fixtures/locations_in_main.rb
@@ -0,0 +1,5 @@
+1.times do
+  puts Thread.current.backtrace_locations(1..1)[0].label
+end
+
+require_relative 'locations_in_required'
diff --git a/spec/ruby/core/thread/backtrace/location/fixtures/locations_in_required.rb b/spec/ruby/core/thread/backtrace/location/fixtures/locations_in_required.rb
new file mode 100644
index 0000000000..5f5ed89e98
--- /dev/null
+++ b/spec/ruby/core/thread/backtrace/location/fixtures/locations_in_required.rb
@@ -0,0 +1,3 @@
+1.times do
+  puts Thread.current.backtrace_locations(1..1)[0].label
+end
diff --git a/spec/ruby/core/thread/backtrace/location/label_spec.rb b/spec/ruby/core/thread/backtrace/location/label_spec.rb
index be8da5646f..7312d017e5 100644
--- a/spec/ruby/core/thread/backtrace/location/label_spec.rb
+++ b/spec/ruby/core/thread/backtrace/location/label_spec.rb
@@ -17,4 +17,21 @@ describe 'Thread::Backtrace::Location#label' do
   it 'returns the module name for a module location' do
     ThreadBacktraceLocationSpecs::MODULE_LOCATION[0].label.should include "ThreadBacktraceLocationSpecs"
   end
+
+  it 'includes the nesting level of a block as part of the location label' do
+    first_level_location, second_level_location, third_level_location =
+      ThreadBacktraceLocationSpecs.locations_inside_nested_blocks
+
+    first_level_location.label.should == 'block in locations_inside_nested_blocks'
+    second_level_location.label.should == 'block (2 levels) in locations_inside_nested_blocks'
+    third_level_location.label.should == 'block (3 levels) in locations_inside_nested_blocks'
+  end
+
+  it 'sets the location label for a top-level block differently depending on it being in the main file or a required file' do
+    path = fixture(__FILE__, "locations_in_main.rb")
+    main_label, required_label = ruby_exe(path).lines
+
+    main_label.should == "block in <main>\n"
+    required_label.should == "block in <top (required)>\n"
+  end
 end
diff --git a/spec/ruby/core/thread/backtrace_locations_spec.rb b/spec/ruby/core/thread/backtrace_locations_spec.rb
new file mode 100644
index 0000000000..66947f8ea6
--- /dev/null
+++ b/spec/ruby/core/thread/backtrace_locations_spec.rb
@@ -0,0 +1,33 @@
+require_relative '../../spec_helper'
+
+describe "Thread#backtrace_locations" do
+  it "returns an Array" do
+    locations = Thread.current.backtrace_locations
+    locations.should be_an_instance_of(Array)
+    locations.should_not be_empty
+  end
+
+  it "sets each element to a Thread::Backtrace::Location" do
+    locations = Thread.current.backtrace_locations
+    locations.each { |loc| loc.should be_an_instance_of(Thread::Backtrace::Location) }
+  end
+
+  it "can be called on any Thread" do
+    locations = Thread.new { Thread.current.backtrace_locations }.value
+    locations.should be_an_instance_of(Array)
+    locations.should_not be_empty
+    locations.each { |loc| loc.should be_an_instance_of(Thread::Backtrace::Location) }
+  end
+
+  it "without argument is the same as showing all locations with 0..-1" do
+    Thread.current.backtrace_locations.map(&:to_s).should == Thread.current.backtrace_locations(0..-1).map(&:to_s)
+  end
+
+  it "the first location reports the call to #backtrace_locations" do
+    Thread.current.backtrace_locations(0..0)[0].to_s.should == "#{__FILE__ }:#{__LINE__ }:in `backtrace_locations'"
+  end
+
+  it "[1..-1] is the same as #caller_locations(0..-1) for Thread.current" do
+    Thread.current.backtrace_locations(1..-1).map(&:to_s).should == caller_locations(0..-1).map(&:to_s)
+  end
+end
diff --git a/spec/ruby/core/unboundmethod/fixtures/classes.rb b/spec/ruby/core/unboundmethod/fixtures/classes.rb
index 43e21916bf..46b1c51669 100644
--- a/spec/ruby/core/unboundmethod/fixtures/classes.rb
+++ b/spec/ruby/core/unboundmethod/fixtures/classes.rb
@@ -34,6 +34,7 @@ module UnboundMethodSpecs
     def with_block(&block); end
 
     alias bar foo
+    alias baz bar
     alias alias_1 foo
     alias alias_2 foo
 
diff --git a/spec/ruby/core/unboundmethod/original_name_spec.rb b/spec/ruby/core/unboundmethod/original_name_spec.rb
new file mode 100644
index 0000000000..7280dcb2b4
--- /dev/null
+++ b/spec/ruby/core/unboundmethod/original_name_spec.rb
@@ -0,0 +1,22 @@
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
+
+describe "UnboundMethod#original_name" do
+  it "returns the name of the method" do
+    String.instance_method(:upcase).original_name.should == :upcase
+  end
+
+  it "returns the original name" do
+    obj = UnboundMethodSpecs::Methods.new
+    obj.method(:foo).unbind.original_name.should == :foo
+    obj.method(:bar).unbind.original_name.should == :foo
+    UnboundMethodSpecs::Methods.instance_method(:bar).original_name.should == :foo
+  end
+
+  it "returns the original name even when aliased twice" do
+    obj = UnboundMethodSpecs::Methods.new
+    obj.method(:foo).unbind.original_name.should == :foo
+    obj.method(:baz).unbind.original_name.should == :foo
+    UnboundMethodSpecs::Methods.instance_method(:baz).original_name.should == :foo
+  end
+end