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/fix_spec.rb

@@ -0,0 +1,57 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+require 'bigdecimal'
+
+describe "BigDecimal#fix" do
+    before :each do
+      @zero = BigDecimal("0")
+      @mixed = BigDecimal("1.23456789")
+      @pos_int = BigDecimal("2E5555")
+      @neg_int = BigDecimal("-2E5555")
+      @pos_frac = BigDecimal("2E-9999")
+      @neg_frac = BigDecimal("-2E-9999")
+
+      @infinity = BigDecimal("Infinity")
+      @infinity_neg = BigDecimal("-Infinity")
+      @nan = BigDecimal("NaN")
+      @zero_pos = BigDecimal("+0")
+      @zero_neg = BigDecimal("-0")
+    end
+
+  it "returns a BigDecimal" do
+    BigDecimal("2E100000000").fix.kind_of?(BigDecimal).should == true
+    BigDecimal("2E-999").kind_of?(BigDecimal).should == true
+  end
+
+  it "returns the integer part of the absolute value" do
+    a = BigDecimal("2E1000")
+    a.fix.should == a
+    b = BigDecimal("-2E1000")
+    b.fix.should == b
+    BigDecimal("0.123456789E5").fix.should == BigDecimal("0.12345E5")
+    BigDecimal("-0.123456789E5").fix.should == BigDecimal("-0.12345E5")
+  end
+
+  it "correctly handles special values" do
+    @infinity.fix.should == @infinity
+    @infinity_neg.fix.should == @infinity_neg
+    @nan.fix.nan?.should == true
+  end
+
+  it "returns 0 if the absolute value is < 1" do
+    BigDecimal("0.99999").fix.should == 0
+    BigDecimal("-0.99999").fix.should == 0
+    BigDecimal("0.000000001").fix.should == 0
+    BigDecimal("-0.00000001").fix.should == 0
+    BigDecimal("-1000000").fix.should_not == 0
+    @zero.fix.should == 0
+    @zero_pos.fix.should == @zero_pos
+    @zero_neg.fix.should == @zero_neg
+  end
+
+  it "does not allow any arguments" do
+    lambda {
+      @mixed.fix(10)
+    }.should raise_error(ArgumentError)
+  end
+
+end