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/bigdecimal/nonzero_spec.rb

@@ -0,0 +1,29 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+require 'bigdecimal'
+
+describe "BigDecimal#nonzero?" do
+
+  it "returns self if self doesn't equal zero" do
+    # documentation says, it returns true. (04/10/08)
+    e2_plus = BigDecimal("2E40001")
+    e3_minus = BigDecimal("3E-20001")
+    infinity = BigDecimal("Infinity")
+    infinity_minus = BigDecimal("-Infinity")
+    nan = BigDecimal("NaN")
+    infinity.nonzero?.should equal(infinity)
+    infinity_minus.nonzero?.should equal(infinity_minus)
+    nan.nonzero?.should equal(nan)
+    e3_minus.nonzero?.should equal(e3_minus)
+    e2_plus.nonzero?.should equal(e2_plus)
+  end
+
+  it "returns nil otherwise" do
+    # documentation states, it should return false. (04/10/08)
+    really_small_zero = BigDecimal("0E-200000000")
+    really_big_zero = BigDecimal("0E200000000000")
+    really_small_zero.nonzero?.should == nil
+    really_big_zero.nonzero?.should == nil
+    BigDecimal("0.000000000000000000000000").nonzero?.should == nil
+  end
+
+end