Update to ruby/spec@875a09e

25 files changed, 100 insertions, 34 deletions

diff --git a/spec/ruby/core/enumerator/arithmetic_sequence/new_spec.rb b/spec/ruby/core/enumerator/arithmetic_sequence/new_spec.rb
index 5a62d3f346..7227581fb9 100644
--- a/spec/ruby/core/enumerator/arithmetic_sequence/new_spec.rb
+++ b/spec/ruby/core/enumerator/arithmetic_sequence/new_spec.rb
@@ -3,7 +3,7 @@ require_relative '../../../spec_helper'
 ruby_version_is "2.6" do
   describe "Enumerator::ArithmeticSequence.new" do
     it "is not defined" do
-      lambda {
+      -> {
         Enumerator::ArithmeticSequence.new
       }.should raise_error(NoMethodError)
     end
@@ -11,7 +11,7 @@ ruby_version_is "2.6" do
 
   describe "Enumerator::ArithmeticSequence.allocate" do
     it "is not defined" do
-      lambda {
+      -> {
         Enumerator::ArithmeticSequence.allocate
       }.should raise_error(TypeError, 'allocator undefined for Enumerator::ArithmeticSequence')
     end
diff --git a/spec/ruby/core/enumerator/chain/initialize_spec.rb b/spec/ruby/core/enumerator/chain/initialize_spec.rb
index 4ede1b8670..e5aa32fd02 100644
--- a/spec/ruby/core/enumerator/chain/initialize_spec.rb
+++ b/spec/ruby/core/enumerator/chain/initialize_spec.rb
@@ -24,7 +24,7 @@ ruby_version_is "2.6" do
 
     describe "on frozen instance" do
       it "raises a RuntimeError" do
-        lambda {
+        -> {
           @uninitialized.freeze.send(:initialize)
         }.should raise_error(RuntimeError)
       end
diff --git a/spec/ruby/core/enumerator/chain/rewind_spec.rb b/spec/ruby/core/enumerator/chain/rewind_spec.rb
index c6b82c831f..951b364f07 100644
--- a/spec/ruby/core/enumerator/chain/rewind_spec.rb
+++ b/spec/ruby/core/enumerator/chain/rewind_spec.rb
@@ -36,7 +36,7 @@ ruby_version_is "2.6" do
       @obj.should_not_receive(:rewind)
       @second.should_receive(:rewind).and_raise(RuntimeError)
       @enum.each {}
-      lambda { @enum.rewind }.should raise_error(RuntimeError)
+      -> { @enum.rewind }.should raise_error(RuntimeError)
     end
 
     it "calls rewind only for objects that have actually been iterated on" do
@@ -46,7 +46,7 @@ ruby_version_is "2.6" do
 
       @obj.should_receive(:rewind)
       @second.should_not_receive(:rewind)
-      lambda { @enum.each {} }.should raise_error(RuntimeError)
+      -> { @enum.each {} }.should raise_error(RuntimeError)
       @enum.rewind
     end
   end
diff --git a/spec/ruby/core/enumerator/each_spec.rb b/spec/ruby/core/enumerator/each_spec.rb
index f66951851e..d88c09cdb5 100644
--- a/spec/ruby/core/enumerator/each_spec.rb
+++ b/spec/ruby/core/enumerator/each_spec.rb
@@ -49,7 +49,7 @@ describe "Enumerator#each" do
 
   it "raises a NoMethodError if the object doesn't respond to #each" do
     enum = Object.new.to_enum
-    lambda do
+    -> do
       enum.each { |e| e }
     end.should raise_error(NoMethodError)
   end
diff --git a/spec/ruby/core/enumerator/each_with_index_spec.rb b/spec/ruby/core/enumerator/each_with_index_spec.rb
index 7332fd628b..96e53a2804 100644
--- a/spec/ruby/core/enumerator/each_with_index_spec.rb
+++ b/spec/ruby/core/enumerator/each_with_index_spec.rb
@@ -14,7 +14,7 @@ describe "Enumerator#each_with_index" do
   end
 
   it "raises an ArgumentError if passed extra arguments" do
-    lambda do
+    -> do
       [1].to_enum.each_with_index(:glark)
     end.should raise_error(ArgumentError)
   end
diff --git a/spec/ruby/core/enumerator/feed_spec.rb b/spec/ruby/core/enumerator/feed_spec.rb
index 90f0af8f14..e387c6cd39 100644
--- a/spec/ruby/core/enumerator/feed_spec.rb
+++ b/spec/ruby/core/enumerator/feed_spec.rb
@@ -39,14 +39,14 @@ describe "Enumerator#feed" do
   it "raises a TypeError if called more than once without advancing the enumerator" do
     @enum.feed :a
     @enum.next
-    lambda { @enum.feed :b }.should raise_error(TypeError)
+    -> { @enum.feed :b }.should raise_error(TypeError)
   end
 
   it "sets the return value of Yielder#yield" do
     enum = Enumerator.new { |y| ScratchPad << y.yield }
     enum.next
     enum.feed :a
-    lambda { enum.next }.should raise_error(StopIteration)
+    -> { enum.next }.should raise_error(StopIteration)
     ScratchPad.recorded.should == [:a]
   end
 end
diff --git a/spec/ruby/core/enumerator/generator/each_spec.rb b/spec/ruby/core/enumerator/generator/each_spec.rb
index cbdf863bec..a43805dd16 100644
--- a/spec/ruby/core/enumerator/generator/each_spec.rb
+++ b/spec/ruby/core/enumerator/generator/each_spec.rb
@@ -21,7 +21,7 @@ describe "Enumerator::Generator#each" do
   end
 
   it "raises a LocalJumpError if no block given" do
-    lambda { @generator.each }.should raise_error(LocalJumpError)
+    -> { @generator.each }.should raise_error(LocalJumpError)
   end
 
   it "returns the block returned value" do
diff --git a/spec/ruby/core/enumerator/generator/initialize_spec.rb b/spec/ruby/core/enumerator/generator/initialize_spec.rb
index 38da37a479..f75c7d6f26 100644
--- a/spec/ruby/core/enumerator/generator/initialize_spec.rb
+++ b/spec/ruby/core/enumerator/generator/initialize_spec.rb
@@ -18,7 +18,7 @@ describe "Enumerator::Generator#initialize" do
 
   describe "on frozen instance" do
     it "raises a RuntimeError" do
-      lambda {
+      -> {
         @uninitialized.freeze.send(:initialize) {}
       }.should raise_error(RuntimeError)
     end
diff --git a/spec/ruby/core/enumerator/initialize_spec.rb b/spec/ruby/core/enumerator/initialize_spec.rb
index 1305f150dc..53bf5d4ef2 100644
--- a/spec/ruby/core/enumerator/initialize_spec.rb
+++ b/spec/ruby/core/enumerator/initialize_spec.rb
@@ -48,12 +48,12 @@ describe "Enumerator#initialize" do
   end
 
   it "sets size to the given size if the given size is a Proc" do
-    @uninitialized.send(:initialize, lambda { 200 }) {}.size.should == 200
+    @uninitialized.send(:initialize, -> { 200 }) {}.size.should == 200
   end
 
   describe "on frozen instance" do
     it "raises a RuntimeError" do
-      lambda {
+      -> {
         @uninitialized.freeze.send(:initialize) {}
       }.should raise_error(RuntimeError)
     end
diff --git a/spec/ruby/core/enumerator/lazy/drop_while_spec.rb b/spec/ruby/core/enumerator/lazy/drop_while_spec.rb
index 6f6472e393..4f6e366f88 100644
--- a/spec/ruby/core/enumerator/lazy/drop_while_spec.rb
+++ b/spec/ruby/core/enumerator/lazy/drop_while_spec.rb
@@ -40,7 +40,7 @@ describe "Enumerator::Lazy#drop_while" do
   end
 
   it "raises an ArgumentError when not given a block" do
-    lambda { @yieldsmixed.drop_while }.should raise_error(ArgumentError)
+    -> { @yieldsmixed.drop_while }.should raise_error(ArgumentError)
   end
 
   describe "on a nested Lazy" do
diff --git a/spec/ruby/core/enumerator/lazy/grep_spec.rb b/spec/ruby/core/enumerator/lazy/grep_spec.rb
index e759cc4a2c..e67686c9a3 100644
--- a/spec/ruby/core/enumerator/lazy/grep_spec.rb
+++ b/spec/ruby/core/enumerator/lazy/grep_spec.rb
@@ -33,6 +33,39 @@ describe "Enumerator::Lazy#grep" do
     Enumerator::Lazy.new(Object.new, 100) {}.grep(Object).size.should == nil
   end
 
+  it "sets $~ in the block" do
+    "z" =~ /z/ # Reset $~
+    ["abc", "def"].lazy.grep(/b/) { |e|
+      e.should == "abc"
+      $&.should == "b"
+    }.force
+
+    # Set by the failed match of "def"
+    $~.should == nil
+  end
+
+  it "sets $~ in the next block with each" do
+    "z" =~ /z/ # Reset $~
+    ["abc", "def"].lazy.grep(/b/).each { |e|
+      e.should == "abc"
+      $&.should == "b"
+    }
+
+    # Set by the failed match of "def"
+    $~.should == nil
+  end
+
+  it "sets $~ in the next block with map" do
+    "z" =~ /z/ # Reset $~
+    ["abc", "def"].lazy.grep(/b/).map { |e|
+      e.should == "abc"
+      $&.should == "b"
+    }.force
+
+    # Set by the failed match of "def"
+    $~.should == nil
+  end
+
   describe "when the returned lazy enumerator is evaluated by Enumerable#first" do
     it "stops after specified times when not given a block" do
       (0..Float::INFINITY).lazy.grep(Integer).first(3).should == [0, 1, 2]
diff --git a/spec/ruby/core/enumerator/lazy/grep_v_spec.rb b/spec/ruby/core/enumerator/lazy/grep_v_spec.rb
index 13d474a8c4..67173021bb 100644
--- a/spec/ruby/core/enumerator/lazy/grep_v_spec.rb
+++ b/spec/ruby/core/enumerator/lazy/grep_v_spec.rb
@@ -31,6 +31,39 @@ describe "Enumerator::Lazy#grep_v" do
     Enumerator::Lazy.new(Object.new, 100) {}.grep_v(Object).size.should == nil
   end
 
+  it "sets $~ in the block" do
+    "z" =~ /z/ # Reset $~
+    ["abc", "def"].lazy.grep_v(/e/) { |e|
+      e.should == "abc"
+      $~.should == nil
+    }.force
+
+    # Set by the match of "def"
+    $&.should == "e"
+  end
+
+  it "sets $~ in the next block with each" do
+    "z" =~ /z/ # Reset $~
+    ["abc", "def"].lazy.grep_v(/e/).each { |e|
+      e.should == "abc"
+      $~.should == nil
+    }
+
+    # Set by the match of "def"
+    $&.should == "e"
+  end
+
+  it "sets $~ in the next block with map" do
+    "z" =~ /z/ # Reset $~
+    ["abc", "def"].lazy.grep_v(/e/).map { |e|
+      e.should == "abc"
+      $~.should == nil
+    }.force
+
+    # Set by the match of "def"
+    $&.should == "e"
+  end
+
   describe "when the returned lazy enumerator is evaluated by Enumerable#first" do
     it "stops after specified times when not given a block" do
       (0..Float::INFINITY).lazy.grep_v(3..5).first(3).should == [0, 1, 2]
diff --git a/spec/ruby/core/enumerator/lazy/initialize_spec.rb b/spec/ruby/core/enumerator/lazy/initialize_spec.rb
index 9fa6eff35a..88c66530b9 100644
--- a/spec/ruby/core/enumerator/lazy/initialize_spec.rb
+++ b/spec/ruby/core/enumerator/lazy/initialize_spec.rb
@@ -48,16 +48,16 @@ describe "Enumerator::Lazy#initialize" do
   end
 
   it "sets given size to own size if the given size is a Proc" do
-    @uninitialized.send(:initialize, @receiver, lambda { 200 }) {}.size.should == 200
+    @uninitialized.send(:initialize, @receiver, -> { 200 }) {}.size.should == 200
   end
 
   it "raises an ArgumentError when block is not given" do
-    lambda {  @uninitialized.send :initialize, @receiver }.should raise_error(ArgumentError)
+    -> {  @uninitialized.send :initialize, @receiver }.should raise_error(ArgumentError)
   end
 
   describe "on frozen instance" do
     it "raises a RuntimeError" do
-      lambda {  @uninitialized.freeze.send(:initialize, @receiver) {} }.should raise_error(RuntimeError)
+      -> {  @uninitialized.freeze.send(:initialize, @receiver) {} }.should raise_error(RuntimeError)
     end
   end
 end
diff --git a/spec/ruby/core/enumerator/lazy/reject_spec.rb b/spec/ruby/core/enumerator/lazy/reject_spec.rb
index 03444b471f..0e1632d667 100644
--- a/spec/ruby/core/enumerator/lazy/reject_spec.rb
+++ b/spec/ruby/core/enumerator/lazy/reject_spec.rb
@@ -52,7 +52,7 @@ describe "Enumerator::Lazy#reject" do
   end
 
   it "raises an ArgumentError when not given a block" do
-    lambda { @yieldsmixed.reject }.should raise_error(ArgumentError)
+    -> { @yieldsmixed.reject }.should raise_error(ArgumentError)
   end
 
   describe "on a nested Lazy" do
diff --git a/spec/ruby/core/enumerator/lazy/shared/collect_concat.rb b/spec/ruby/core/enumerator/lazy/shared/collect_concat.rb
index e8ee4b6940..00d7941a61 100644
--- a/spec/ruby/core/enumerator/lazy/shared/collect_concat.rb
+++ b/spec/ruby/core/enumerator/lazy/shared/collect_concat.rb
@@ -46,7 +46,7 @@ describe :enumerator_lazy_collect_concat, shared: true do
   end
 
   it "raises an ArgumentError when not given a block" do
-    lambda { @yieldsmixed.send(@method) }.should raise_error(ArgumentError)
+    -> { @yieldsmixed.send(@method) }.should raise_error(ArgumentError)
   end
 
   describe "on a nested Lazy" do
diff --git a/spec/ruby/core/enumerator/lazy/shared/select.rb b/spec/ruby/core/enumerator/lazy/shared/select.rb
index 39074408ee..50a00bcbf4 100644
--- a/spec/ruby/core/enumerator/lazy/shared/select.rb
+++ b/spec/ruby/core/enumerator/lazy/shared/select.rb
@@ -40,7 +40,7 @@ describe :enumerator_lazy_select, shared: true do
   end
 
   it "raises an ArgumentError when not given a block" do
-    lambda { @yieldsmixed.send(@method) }.should raise_error(ArgumentError)
+    -> { @yieldsmixed.send(@method) }.should raise_error(ArgumentError)
   end
 
   describe "on a nested Lazy" do
diff --git a/spec/ruby/core/enumerator/lazy/take_while_spec.rb b/spec/ruby/core/enumerator/lazy/take_while_spec.rb
index 412ff76787..bcea0b1419 100644
--- a/spec/ruby/core/enumerator/lazy/take_while_spec.rb
+++ b/spec/ruby/core/enumerator/lazy/take_while_spec.rb
@@ -40,7 +40,7 @@ describe "Enumerator::Lazy#take_while" do
   end
 
   it "raises an ArgumentError when not given a block" do
-    lambda { @yieldsmixed.take_while }.should raise_error(ArgumentError)
+    -> { @yieldsmixed.take_while }.should raise_error(ArgumentError)
   end
 
   describe "on a nested Lazy" do
diff --git a/spec/ruby/core/enumerator/lazy/zip_spec.rb b/spec/ruby/core/enumerator/lazy/zip_spec.rb
index a28a7f5d5e..5a828c1dcc 100644
--- a/spec/ruby/core/enumerator/lazy/zip_spec.rb
+++ b/spec/ruby/core/enumerator/lazy/zip_spec.rb
@@ -44,7 +44,7 @@ describe "Enumerator::Lazy#zip" do
   end
 
   it "raises a TypeError if arguments contain non-list object" do
-    lambda { @yieldsmixed.zip [], Object.new, [] }.should raise_error(TypeError)
+    -> { @yieldsmixed.zip [], Object.new, [] }.should raise_error(TypeError)
   end
 
   describe "on a nested Lazy" do
diff --git a/spec/ruby/core/enumerator/next_spec.rb b/spec/ruby/core/enumerator/next_spec.rb
index e0d3c0a39b..3e9ed8b015 100644
--- a/spec/ruby/core/enumerator/next_spec.rb
+++ b/spec/ruby/core/enumerator/next_spec.rb
@@ -13,14 +13,14 @@ describe "Enumerator#next" do
 
   it "raises a StopIteration exception at the end of the stream" do
     3.times { @enum.next }
-    lambda { @enum.next }.should raise_error(StopIteration)
+    -> { @enum.next }.should raise_error(StopIteration)
   end
 
   it "cannot be called again until the enumerator is rewound" do
     3.times { @enum.next }
-    lambda { @enum.next }.should raise_error(StopIteration)
-    lambda { @enum.next }.should raise_error(StopIteration)
-    lambda { @enum.next }.should raise_error(StopIteration)
+    -> { @enum.next }.should raise_error(StopIteration)
+    -> { @enum.next }.should raise_error(StopIteration)
+    -> { @enum.next }.should raise_error(StopIteration)
     @enum.rewind
     @enum.next.should == 1
   end
diff --git a/spec/ruby/core/enumerator/next_values_spec.rb b/spec/ruby/core/enumerator/next_values_spec.rb
index 8b57332c28..201b5d323f 100644
--- a/spec/ruby/core/enumerator/next_values_spec.rb
+++ b/spec/ruby/core/enumerator/next_values_spec.rb
@@ -50,6 +50,6 @@ describe "Enumerator#next_values" do
 
   it "raises StopIteration if called on a finished enumerator" do
     7.times { @e.next }
-    lambda { @e.next_values }.should raise_error(StopIteration)
+    -> { @e.next_values }.should raise_error(StopIteration)
   end
 end
diff --git a/spec/ruby/core/enumerator/peek_spec.rb b/spec/ruby/core/enumerator/peek_spec.rb
index 0e4f60893d..2334385437 100644
--- a/spec/ruby/core/enumerator/peek_spec.rb
+++ b/spec/ruby/core/enumerator/peek_spec.rb
@@ -31,6 +31,6 @@ describe "Enumerator#peek" do
 
   it "raises StopIteration if called on a finished enumerator" do
     5.times { @e.next }
-    lambda { @e.peek }.should raise_error(StopIteration)
+    -> { @e.peek }.should raise_error(StopIteration)
   end
 end
diff --git a/spec/ruby/core/enumerator/peek_values_spec.rb b/spec/ruby/core/enumerator/peek_values_spec.rb
index 5c81b4e529..7865546515 100644
--- a/spec/ruby/core/enumerator/peek_values_spec.rb
+++ b/spec/ruby/core/enumerator/peek_values_spec.rb
@@ -52,6 +52,6 @@ describe "Enumerator#peek_values" do
 
   it "raises StopIteration if called on a finished enumerator" do
     7.times { @e.next }
-    lambda { @e.peek_values }.should raise_error(StopIteration)
+    -> { @e.peek_values }.should raise_error(StopIteration)
   end
 end
diff --git a/spec/ruby/core/enumerator/rewind_spec.rb b/spec/ruby/core/enumerator/rewind_spec.rb
index 2a83b7c6ee..a105f2c619 100644
--- a/spec/ruby/core/enumerator/rewind_spec.rb
+++ b/spec/ruby/core/enumerator/rewind_spec.rb
@@ -49,7 +49,7 @@ describe "Enumerator#rewind" do
     obj = mock('rewinder')
     enum = obj.to_enum
     obj.should_receive(:each).at_most(1)
-    lambda { enum.rewind.should == enum }.should_not raise_error
+    -> { enum.rewind.should == enum }.should_not raise_error
   end
 end
 
diff --git a/spec/ruby/core/enumerator/size_spec.rb b/spec/ruby/core/enumerator/size_spec.rb
index 5729b9303d..6accd26a4e 100644
--- a/spec/ruby/core/enumerator/size_spec.rb
+++ b/spec/ruby/core/enumerator/size_spec.rb
@@ -11,7 +11,7 @@ describe "Enumerator#size" do
 
   it "returns returning value from size.call if set size is a Proc" do
     base_size = 100
-    enum = Enumerator.new(lambda { base_size + 1 }) {}
+    enum = Enumerator.new(-> { base_size + 1 }) {}
     base_size = 200
     enum.size.should == 201
     base_size = 300
diff --git a/spec/ruby/core/enumerator/with_index_spec.rb b/spec/ruby/core/enumerator/with_index_spec.rb
index ca9f5a133e..ac37cee508 100644
--- a/spec/ruby/core/enumerator/with_index_spec.rb
+++ b/spec/ruby/core/enumerator/with_index_spec.rb
@@ -14,13 +14,13 @@ describe "Enumerator#with_index" do
   end
 
   it "accepts an optional argument when given a block" do
-    lambda do
+    -> do
       @enum.with_index(1) { |f| f}
     end.should_not raise_error(ArgumentError)
   end
 
   it "accepts an optional argument when not given a block" do
-    lambda do
+    -> do
       @enum.with_index(1)
     end.should_not raise_error(ArgumentError)
   end
@@ -36,7 +36,7 @@ describe "Enumerator#with_index" do
   end
 
   it "raises a TypeError when the argument cannot be converted to numeric" do
-    lambda do
+    -> do
       @enum.with_index('1') {|*i| i}
     end.should raise_error(TypeError)
   end