Move spec/rubyspec to spec/ruby for consistency

* Other ruby implementations use the spec/ruby directory.
  [Misc #13792] [ruby-core:82287]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59979 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

spec/ruby/core/io/shared/write.rb

@@ -0,0 +1,72 @@
+# encoding: utf-8
+require File.expand_path('../../fixtures/classes', __FILE__)
+
+describe :io_write, shared: true do
+  before :each do
+    @filename = tmp("IO_syswrite_file") + $$.to_s
+    File.open(@filename, "w") do |file|
+      file.send(@method, "012345678901234567890123456789")
+    end
+    @file = File.open(@filename, "r+")
+    @readonly_file = File.open(@filename)
+  end
+
+  after :each do
+    @readonly_file.close if @readonly_file
+    @file.close if @file
+    rm_r @filename
+  end
+
+  it "coerces the argument to a string using to_s" do
+    (obj = mock('test')).should_receive(:to_s).and_return('a string')
+    @file.send(@method, obj)
+  end
+
+  it "checks if the file is writable if writing more than zero bytes" do
+    lambda { @readonly_file.send(@method, "abcde") }.should raise_error(IOError)
+  end
+
+  it "returns the number of bytes written" do
+    written = @file.send(@method, "abcde")
+    written.should == 5
+  end
+
+  it "invokes to_s on non-String argument" do
+    data = "abcdefgh9876"
+    (obj = mock(data)).should_receive(:to_s).and_return(data)
+    @file.send(@method, obj)
+    @file.seek(0)
+    @file.read(data.size).should == data
+  end
+
+  it "writes all of the string's bytes without buffering if mode is sync" do
+    @file.sync = true
+    written = @file.send(@method, "abcde")
+    written.should == 5
+    File.open(@filename) do |file|
+      file.read(10).should == "abcde56789"
+    end
+  end
+
+  it "does not warn if called after IO#read" do
+    @file.read(5)
+    lambda { @file.send(@method, "fghij") }.should_not complain
+  end
+
+  it "writes to the current position after IO#read" do
+    @file.read(5)
+    @file.send(@method, "abcd")
+    @file.rewind
+    @file.read.should == "01234abcd901234567890123456789"
+  end
+
+  it "advances the file position by the count of given bytes" do
+    @file.send(@method, "abcde")
+    @file.read(10).should == "5678901234"
+  end
+
+  it "raises IOError on closed stream" do
+    lambda { IOSpecs.closed_io.send(@method, "hello") }.should raise_error(IOError)
+  end
+
+end