Add in-tree mspec and ruby/spec

* For easier modifications of ruby/spec by MRI developers.
* .gitignore: track changes under spec.
* spec/mspec, spec/rubyspec: add in-tree mspec and ruby/spec.
  These files can therefore be updated like any other file in MRI.
  Instructions are provided in spec/README.
  [Feature #13156] [ruby-core:79246]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58595 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 54 insertions, 0 deletions

diff --git a/spec/rubyspec/core/io/print_spec.rb b/spec/rubyspec/core/io/print_spec.rb
new file mode 100644
index 0000000000..e852757385
--- /dev/null
+++ b/spec/rubyspec/core/io/print_spec.rb
@@ -0,0 +1,54 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+require File.expand_path('../fixtures/classes', __FILE__)
+
+describe IO, "#print" do
+  before :each do
+    @old_separator = $\
+    $\ = '->'
+    @name = tmp("io_print")
+  end
+
+  after :each do
+    $\ = @old_separator
+    rm_r @name
+  end
+
+  it "writes $_.to_s followed by $\\ (if any) to the stream if no arguments given" do
+    o = mock('o')
+    o.should_receive(:to_s).and_return("mockmockmock")
+    $_ = o
+
+    touch(@name) { |f| f.print }
+    IO.read(@name).should == "mockmockmock#{$\}"
+
+    # Set $_ to something known
+    string = File.open(__FILE__) {|f| f.gets }
+
+    touch(@name) { |f| f.print }
+    IO.read(@name).should == "#{string}#{$\}"
+  end
+
+  it "calls obj.to_s and not obj.to_str then writes the record separator" do
+    o = mock('o')
+    o.should_not_receive(:to_str)
+    o.should_receive(:to_s).and_return("hello")
+
+    touch(@name) { |f| f.print(o) }
+
+    IO.read(@name).should == "hello#{$\}"
+  end
+
+  it "writes each obj.to_s to the stream and appends $\\ (if any) given multiple objects" do
+    o, o2 = Object.new, Object.new
+    def o.to_s(); 'o'; end
+    def o2.to_s(); 'o2'; end
+
+    touch(@name) { |f| f.print(o, o2) }
+    IO.read(@name).should == "#{o.to_s}#{o2.to_s}#{$\}"
+  end
+
+  it "raises IOError on closed stream" do
+    lambda { IOSpecs.closed_io.print("stuff") }.should raise_error(IOError)
+  end
+end
+