1 files changed, 88 insertions, 38 deletions
diff --git a/spec/ruby/core/kernel/open_spec.rb b/spec/ruby/core/kernel/open_spec.rb
index 3a9f5ea2d5..b967d5044b 100644
--- a/spec/ruby/core/kernel/open_spec.rb
+++ b/spec/ruby/core/kernel/open_spec.rb
@@ -2,7 +2,6 @@ require_relative '../../spec_helper'
 require_relative 'fixtures/classes'
 
 describe "Kernel#open" do
-
   before :each do
     @name = tmp("kernel_open.txt")
     @content = "This is a test"
@@ -28,49 +27,80 @@ describe "Kernel#open" do
     open(@name, "r") { |f| f.gets }.should == @content
   end
 
-  platform_is_not :windows do
-    it "opens an io when path starts with a pipe" do
-      @io = open("|date")
-      begin
-        @io.should be_kind_of(IO)
-        @io.read
-      ensure
-        @io.close
+  ruby_version_is ""..."4.0" do
+    platform_is_not :windows, :wasi do
+      it "opens an io when path starts with a pipe" do
+        suppress_warning do # https://bugs.ruby-lang.org/issues/19630
+          @io = open("|date")
+        end
+        begin
+          @io.should be_kind_of(IO)
+          @io.read
+        ensure
+          @io.close
+        end
       end
-    end
 
-    it "opens an io when called with a block" do
-      @output = open("|date") { |f| f.read }
-      @output.should_not == ''
-    end
+      it "opens an io when called with a block" do
+        suppress_warning do # https://bugs.ruby-lang.org/issues/19630
+          @output = open("|date") { |f| f.read }
+        end
+        @output.should_not == ''
+      end
 
-    it "opens an io for writing" do
-      -> do
-        bytes = open("|cat", "w") { |io| io.write(".") }
-        bytes.should == 1
-      end.should output_to_fd(".")
+      it "opens an io for writing" do
+        suppress_warning do # https://bugs.ruby-lang.org/issues/19630
+          -> {
+            bytes = open("|cat", "w") { |io| io.write(".") }
+            bytes.should == 1
+          }.should output_to_fd(".")
+        end
+      end
     end
-  end
 
-  platform_is :windows do
-    it "opens an io when path starts with a pipe" do
-      @io = open("|date /t")
-      begin
-        @io.should be_kind_of(IO)
-        @io.read
-      ensure
-        @io.close
+    platform_is :windows do
+      it "opens an io when path starts with a pipe" do
+        suppress_warning do # https://bugs.ruby-lang.org/issues/19630
+          @io = open("|date /t")
+        end
+        begin
+          @io.should be_kind_of(IO)
+          @io.read
+        ensure
+          @io.close
+        end
+      end
+
+      it "opens an io when called with a block" do
+        suppress_warning do # https://bugs.ruby-lang.org/issues/19630
+          @output = open("|date /t") { |f| f.read }
+        end
+        @output.should_not == ''
       end
     end
 
-    it "opens an io when called with a block" do
-      @output = open("|date /t") { |f| f.read }
-      @output.should_not == ''
+    ruby_version_is "3.3" do
+      # https://bugs.ruby-lang.org/issues/19630
+      it "warns about deprecation given a path with a pipe" do
+        cmd = "|echo ok"
+        -> {
+          open(cmd) { |f| f.read }
+        }.should complain(/Kernel#open with a leading '\|'/)
+      end
     end
   end
 
   it "raises an ArgumentError if not passed one argument" do
-    lambda { open }.should raise_error(ArgumentError)
+    -> { open }.should raise_error(ArgumentError)
+  end
+
+  it "accepts options as keyword arguments" do
+    @file = open(@name, "r", 0666, flags: File::CREAT)
+    @file.should be_kind_of(File)
+
+    -> {
+      open(@name, "r", 0666, {flags: File::CREAT})
+    }.should raise_error(ArgumentError, "wrong number of arguments (given 4, expected 1..3)")
   end
 
   describe "when given an object that responds to to_open" do
@@ -78,7 +108,7 @@ describe "Kernel#open" do
       ScratchPad.clear
     end
 
-    it "calls #to_path to covert the argument to a String before calling #to_str" do
+    it "calls #to_path to convert the argument to a String before calling #to_str" do
       obj = mock("open to_path")
       obj.should_receive(:to_path).at_least(1).times.and_return(@name)
       obj.should_not_receive(:to_str)
@@ -110,11 +140,21 @@ describe "Kernel#open" do
 
     it "passes its arguments onto #to_open" do
       obj = mock('to_open')
-      obj.should_receive(:to_open).with(1,2,3)
-
+      obj.should_receive(:to_open).with(1, 2, 3)
       open(obj, 1, 2, 3)
     end
 
+    it "passes keyword arguments onto #to_open as keyword arguments if to_open accepts them" do
+      obj = Object.new
+      def obj.to_open(*args, **kw)
+        ScratchPad << {args: args, kw: kw}
+      end
+
+      ScratchPad.record []
+      open(obj, 1, 2, 3, a: "b")
+      ScratchPad.recorded.should == [args: [1, 2, 3], kw: {a: "b"}]
+    end
+
     it "passes the return value from #to_open to a block" do
       obj = mock('to_open')
       obj.should_receive(:to_open).and_return(:value)
@@ -129,14 +169,24 @@ describe "Kernel#open" do
 
   it "raises a TypeError if passed a non-String that does not respond to #to_open" do
     obj = mock('non-fileish')
-    lambda { open(obj) }.should raise_error(TypeError)
-    lambda { open(nil) }.should raise_error(TypeError)
-    lambda { open(7)   }.should raise_error(TypeError)
+    -> { open(obj) }.should raise_error(TypeError)
+    -> { open(nil) }.should raise_error(TypeError)
+    -> { open(7)   }.should raise_error(TypeError)
   end
 
   it "accepts nil for mode and permission" do
     open(@name, nil, nil) { |f| f.gets }.should == @content
   end
+
+  it "is not redefined by open-uri" do
+    code = <<~RUBY
+      before = Kernel.instance_method(:open)
+      require 'open-uri'
+      after = Kernel.instance_method(:open)
+      p before == after
+    RUBY
+    ruby_exe(code, args: "2>&1").should == "true\n"
+  end
 end
 
 describe "Kernel.open" do