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/library/datetime/shared/min.rb

@@ -0,0 +1,40 @@
+require 'date'
+
+describe :datetime_min, shared: true do
+  it "returns 0 if no argument is passed" do
+    DateTime.new.send(@method).should == 0
+  end
+
+  it "returns the minute passed as argument" do
+    new_datetime(minute: 5).send(@method).should == 5
+  end
+
+  it "adds 60 to negative minutes" do
+    new_datetime(minute: -20).send(@method).should == 40
+  end
+
+  it "raises an error for Rational" do
+    lambda { new_datetime minute: 5 + Rational(1,2) }.should raise_error(ArgumentError)
+  end
+
+  it "raises an error for Float" do
+    lambda { new_datetime minute: 5.5 }.should raise_error(ArgumentError)
+  end
+
+  it "raises an error for Rational" do
+    lambda { new_datetime(hour: 2 + Rational(1,2)) }.should raise_error(ArgumentError)
+  end
+
+  it "raises an error, when the minute is smaller than -60" do
+    lambda { new_datetime(minute: -61) }.should raise_error(ArgumentError)
+  end
+
+  it "raises an error, when the minute is greater or equal than 60" do
+    lambda { new_datetime(minute: 60) }.should raise_error(ArgumentError)
+  end
+
+  it "raises an error for minute fractions smaller than -60" do
+    lambda { new_datetime(minute: -60 - Rational(1,2))}.should(
+      raise_error(ArgumentError))
+  end
+end