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, 47 insertions, 0 deletions

diff --git a/spec/rubyspec/library/bigdecimal/inspect_spec.rb b/spec/rubyspec/library/bigdecimal/inspect_spec.rb
new file mode 100644
index 0000000000..9831b2be8e
--- /dev/null
+++ b/spec/rubyspec/library/bigdecimal/inspect_spec.rb
@@ -0,0 +1,47 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+require 'bigdecimal'
+
+describe "BigDecimal#inspect" do
+
+  before :each do
+    @bigdec = BigDecimal.new("1234.5678")
+  end
+
+  it "returns String" do
+    @bigdec.inspect.kind_of?(String).should == true
+  end
+
+  ruby_version_is ""..."2.4" do
+    it "returns String starting with #" do
+      @bigdec.inspect[0].should == ?#
+    end
+
+    it "encloses information in angle brackets" do
+      @bigdec.inspect.should =~ /^.<.*>$/
+    end
+
+    it "is comma separated list of three items" do
+      @bigdec.inspect.should =~ /...*,.*,.*/
+    end
+
+    it "value after first comma is value as string" do
+      @bigdec.inspect.split(",")[1].should == "\'0.12345678E4\'"
+    end
+
+    it "last part is number of significant digits" do
+      signific_string = "#{@bigdec.precs[0]}(#{@bigdec.precs[1]})"
+      @bigdec.inspect.split(",")[2].should == signific_string + ">"
+    end
+
+    it "looks like this" do
+      regex = /^\#\<BigDecimal\:.*,'0\.12345678E4',[0-9]+\([0-9]+\)>$/
+      @bigdec.inspect.should =~ regex
+    end
+  end
+
+  ruby_version_is "2.4" do
+    it "looks like this" do
+      @bigdec.inspect.should == "0.12345678e4"
+    end
+  end
+end