1 files changed, 48 insertions, 0 deletions
diff --git a/spec/ruby/library/bigdecimal/frac_spec.rb b/spec/ruby/library/bigdecimal/frac_spec.rb
new file mode 100644
index 0000000000..9a727a70dd
--- /dev/null
+++ b/spec/ruby/library/bigdecimal/frac_spec.rb
@@ -0,0 +1,48 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+require 'bigdecimal'
+
+describe "BigDecimal#frac" 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
+    @pos_int.frac.kind_of?(BigDecimal).should == true
+    @neg_int.frac.kind_of?(BigDecimal).should == true
+    @pos_frac.kind_of?(BigDecimal).should == true
+    @neg_frac.kind_of?(BigDecimal).should == true
+  end
+
+  it "returns the fractional part of the absolute value" do
+    @mixed.frac.should == BigDecimal("0.23456789")
+    @pos_frac.frac.should == @pos_frac
+    @neg_frac.frac.should == @neg_frac
+  end
+
+  it "returns 0 if the value is 0" do
+    @zero.frac.should == @zero
+  end
+
+  it "returns 0 if the value is an integer" do
+    @pos_int.frac.should == @zero
+    @neg_int.frac.should == @zero
+  end
+
+  it "correctly handles special values" do
+    @infinity.frac.should == @infinity
+    @infinity_neg.frac.should == @infinity_neg
+    @nan.frac.nan?.should == true
+  end
+
+end