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/time/usec_spec.rb

@@ -0,0 +1,39 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+
+describe "Time#usec" do
+  it "returns 0 for a Time constructed with a whole number of seconds" do
+    Time.at(100).usec.should == 0
+  end
+
+  it "returns the microseconds part of a Time constructed with a Float number of seconds" do
+    Time.at(10.75).usec.should == 750_000
+  end
+
+  it "returns the microseconds part of a Time constructed with an Integer number of microseconds" do
+    Time.at(0, 999_999).usec.should == 999_999
+  end
+
+  it "returns the microseconds part of a Time constructed with an Float number of microseconds > 1" do
+    Time.at(0, 3.75).usec.should == 3
+  end
+
+  it "returns 0 for a Time constructed with an Float number of microseconds < 1" do
+    Time.at(0, 0.75).usec.should == 0
+  end
+
+  it "returns the microseconds part of a Time constructed with a Rational number of seconds" do
+    Time.at(Rational(3, 2)).usec.should == 500_000
+  end
+
+  it "returns the microseconds part of a Time constructed with an Rational number of microseconds > 1" do
+    Time.at(0, Rational(99, 10)).usec.should == 9
+  end
+
+  it "returns 0 for a Time constructed with an Rational number of microseconds < 1" do
+    Time.at(0, Rational(9, 10)).usec.should == 0
+  end
+
+  it "returns the microseconds for time created by Time#local" do
+    Time.local(1,2,3,4,5,Rational(6.78)).usec.should == 780000
+  end
+end