Update to ruby/spec@7f22a0b

7 files changed, 175 insertions, 3 deletions

diff --git a/spec/ruby/core/kernel/clone_spec.rb b/spec/ruby/core/kernel/clone_spec.rb
index f9daa2badc..38ae1984c0 100644
--- a/spec/ruby/core/kernel/clone_spec.rb
+++ b/spec/ruby/core/kernel/clone_spec.rb
@@ -31,10 +31,10 @@ describe "Kernel#clone" do
   describe "with no arguments" do
     it "copies frozen state from the original" do
       o2 = @obj.clone
+      o2.should_not.frozen?
+
       @obj.freeze
       o3 = @obj.clone
-
-      o2.should_not.frozen?
       o3.should.frozen?
     end
 
@@ -44,6 +44,30 @@ describe "Kernel#clone" do
     end
   end
 
+  describe "with freeze: nil" do
+    ruby_version_is ""..."3.0" do
+      it "raises ArgumentError" do
+        -> { @obj.clone(freeze: nil) }.should raise_error(ArgumentError, /unexpected value for freeze: NilClass/)
+      end
+    end
+
+    ruby_version_is "3.0" do
+      it "copies frozen state from the original, like #clone without arguments" do
+        o2 = @obj.clone(freeze: nil)
+        o2.should_not.frozen?
+
+        @obj.freeze
+        o3 = @obj.clone(freeze: nil)
+        o3.should.frozen?
+      end
+
+      it "copies frozen?" do
+        o = "".freeze.clone(freeze: nil)
+        o.frozen?.should be_true
+      end
+    end
+  end
+
   describe "with freeze: true" do
     it 'makes a frozen copy if the original is frozen' do
       @obj.freeze
@@ -112,6 +136,14 @@ describe "Kernel#clone" do
     end
   end
 
+  describe "with freeze: anything else" do
+    it 'raises ArgumentError when passed not true/false/nil' do
+      -> { @obj.clone(freeze: 1) }.should raise_error(ArgumentError, /unexpected value for freeze: Integer/)
+      -> { @obj.clone(freeze: "") }.should raise_error(ArgumentError, /unexpected value for freeze: String/)
+      -> { @obj.clone(freeze: Object.new) }.should raise_error(ArgumentError, /unexpected value for freeze: Object/)
+    end
+  end
+
   it "copies instance variables" do
     clone = @obj.clone
     clone.one.should == 1
diff --git a/spec/ruby/core/kernel/fixtures/classes.rb b/spec/ruby/core/kernel/fixtures/classes.rb
index 8de1407b92..541a4c075e 100644
--- a/spec/ruby/core/kernel/fixtures/classes.rb
+++ b/spec/ruby/core/kernel/fixtures/classes.rb
@@ -281,9 +281,14 @@ module KernelSpecs
       @two = two
     end
 
-    def initialize_copy(other)
+    def initialize_copy(other, **kw)
       ScratchPad.record object_id
     end
+
+    # define to support calling #clone with optional :freeze keyword argument
+    def initialize_clone(other, **kw)
+      super(other) # to call #initialize_copy
+    end
   end
 
   class Clone
diff --git a/spec/ruby/core/kernel/initialize_clone_spec.rb b/spec/ruby/core/kernel/initialize_clone_spec.rb
new file mode 100644
index 0000000000..2d889f5aad
--- /dev/null
+++ b/spec/ruby/core/kernel/initialize_clone_spec.rb
@@ -0,0 +1,28 @@
+require_relative '../../spec_helper'
+
+describe "Kernel#initialize_clone" do
+  it "is a private instance method" do
+    Kernel.should have_private_instance_method(:initialize_clone)
+  end
+
+  it "returns the receiver" do
+    a = Object.new
+    b = Object.new
+    a.send(:initialize_clone, b).should == a
+  end
+
+  it "calls #initialize_copy" do
+    a = Object.new
+    b = Object.new
+    a.should_receive(:initialize_copy).with(b)
+    a.send(:initialize_clone, b)
+  end
+
+  ruby_version_is "3.0" do
+    it "accepts a :freeze keyword argument for obj.clone(freeze: value)" do
+      a = Object.new
+      b = Object.new
+      a.send(:initialize_clone, b, freeze: true).should == a
+    end
+  end
+end
diff --git a/spec/ruby/core/kernel/initialize_dup_spec.rb b/spec/ruby/core/kernel/initialize_dup_spec.rb
new file mode 100644
index 0000000000..6dff34b7ad
--- /dev/null
+++ b/spec/ruby/core/kernel/initialize_dup_spec.rb
@@ -0,0 +1,20 @@
+require_relative '../../spec_helper'
+
+describe "Kernel#initialize_dup" do
+  it "is a private instance method" do
+    Kernel.should have_private_instance_method(:initialize_dup)
+  end
+
+  it "returns the receiver" do
+    a = Object.new
+    b = Object.new
+    a.send(:initialize_dup, b).should == a
+  end
+
+  it "calls #initialize_copy" do
+    a = Object.new
+    b = Object.new
+    a.should_receive(:initialize_copy).with(b)
+    a.send(:initialize_dup, b)
+  end
+end
diff --git a/spec/ruby/core/kernel/instance_variables_spec.rb b/spec/ruby/core/kernel/instance_variables_spec.rb
index 831f0662a2..677d8bb7b2 100644
--- a/spec/ruby/core/kernel/instance_variables_spec.rb
+++ b/spec/ruby/core/kernel/instance_variables_spec.rb
@@ -25,5 +25,16 @@ describe "Kernel#instance_variables" do
       a.instance_variable_set("@test", 1)
       a.instance_variables.should == [:@test]
     end
+
+    it "returns the instances variables in the order declared" do
+      c = Class.new do
+        def initialize
+          @c = 1
+          @a = 2
+          @b = 3
+        end
+      end
+      c.new.instance_variables.should == [:@c, :@a, :@b]
+    end
   end
 end
diff --git a/spec/ruby/core/kernel/print_spec.rb b/spec/ruby/core/kernel/print_spec.rb
index c8c4453d1e..7e7c9b822d 100644
--- a/spec/ruby/core/kernel/print_spec.rb
+++ b/spec/ruby/core/kernel/print_spec.rb
@@ -5,6 +5,18 @@ describe "Kernel#print" do
   it "is a private method" do
     Kernel.should have_private_instance_method(:print)
   end
+
+  it "delegates to $stdout" do
+    -> { print :arg }.should output("arg")
+  end
+
+  it "prints $_ when no arguments are given" do
+    orig_value = $_
+    $_ = 'foo'
+    -> { print }.should output("foo")
+  ensure
+    $_ = orig_value
+  end
 end
 
 describe "Kernel.print" do
diff --git a/spec/ruby/core/kernel/warn_spec.rb b/spec/ruby/core/kernel/warn_spec.rb
index 511e741f32..7df6fa72d1 100644
--- a/spec/ruby/core/kernel/warn_spec.rb
+++ b/spec/ruby/core/kernel/warn_spec.rb
@@ -212,6 +212,70 @@ describe "Kernel#warn" do
     -> { warn('foo', **h) }.should complain("foo\n")
   end
 
+  ruby_version_is '3.0' do
+    it "calls Warning.warn without keyword arguments if Warning.warn does not accept keyword arguments" do
+      verbose = $VERBOSE
+      $VERBOSE = false
+      class << Warning
+        alias_method :_warn, :warn
+        def warn(message)
+          ScratchPad.record(message)
+        end
+      end
+
+      begin
+        ScratchPad.clear
+        Kernel.warn("Chunky bacon!")
+        ScratchPad.recorded.should == "Chunky bacon!\n"
+
+        Kernel.warn("Deprecated bacon!", category: :deprecated)
+        ScratchPad.recorded.should == "Deprecated bacon!\n"
+      ensure
+        class << Warning
+          remove_method :warn
+          alias_method :warn, :_warn
+          remove_method :_warn
+        end
+        $VERBOSE = verbose
+      end
+    end
+
+    it "calls Warning.warn with category: nil if Warning.warn accepts keyword arguments" do
+      Warning.should_receive(:warn).with("Chunky bacon!\n", category: nil)
+      verbose = $VERBOSE
+      $VERBOSE = false
+      begin
+        Kernel.warn("Chunky bacon!")
+      ensure
+        $VERBOSE = verbose
+      end
+    end
+
+    it "calls Warning.warn with given category keyword converted to a symbol" do
+      Warning.should_receive(:warn).with("Chunky bacon!\n", category: :deprecated)
+      verbose = $VERBOSE
+      $VERBOSE = false
+      begin
+        Kernel.warn("Chunky bacon!", category: 'deprecated')
+      ensure
+        $VERBOSE = verbose
+      end
+    end
+  end
+
+  ruby_version_is ''...'3.0' do
+    it "calls Warning.warn with no keyword arguments" do
+      Warning.should_receive(:warn).with("Chunky bacon!\n")
+      verbose = $VERBOSE
+      $VERBOSE = false
+      begin
+        Kernel.warn("Chunky bacon!")
+      ensure
+        $VERBOSE = verbose
+      end
+    end
+  end
+
   it "does not call Warning.warn if self is the Warning module" do
     # RubyGems redefines Kernel#warn so we need to use a subprocess and disable RubyGems here
     code = <<-RUBY