1 files changed, 49 insertions, 0 deletions
diff --git a/spec/rubyspec/library/bigdecimal/precs_spec.rb b/spec/rubyspec/library/bigdecimal/precs_spec.rb
new file mode 100644
index 0000000000..c7700a3819
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+++ b/spec/rubyspec/library/bigdecimal/precs_spec.rb
@@ -0,0 +1,49 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+require 'bigdecimal'
+
+describe "BigDecimal#precs" do
+
+  before :each do
+    @infinity = BigDecimal("Infinity")
+    @infinity_neg = BigDecimal("-Infinity")
+    @nan = BigDecimal("NaN")
+    @zero = BigDecimal("0")
+    @zero_neg = BigDecimal("-0")
+
+    @arr = [BigDecimal("2E40001"), BigDecimal("3E-20001"),\
+            @infinity, @infinity_neg, @nan, @zero, @zero_neg]
+    @precision = BigDecimal::BASE.to_s.length - 1
+  end
+
+  it "returns array of two values" do
+    @arr.each do |x|
+      x.precs.kind_of?(Array).should == true
+      x.precs.size.should == 2
+    end
+  end
+
+  it "returns Integers as array values" do
+    @arr.each do |x|
+      x.precs[0].kind_of?(Integer).should == true
+      x.precs[1].kind_of?(Integer).should == true
+    end
+  end
+
+  it "returns the current value of significant digits as the first value" do
+    BigDecimal("3.14159").precs[0].should >= 6
+    BigDecimal('1').precs[0].should == BigDecimal('1' + '0' * 100).precs[0]
+    [@infinity, @infinity_neg, @nan, @zero, @zero_neg].each do |value|
+      value.precs[0].should <= @precision
+    end
+  end
+
+  it "returns the maximum number of significant digits as the second value" do
+    BigDecimal("3.14159").precs[1].should >= 6
+    BigDecimal('1').precs[1].should >= 1
+    BigDecimal('1' + '0' * 100).precs[1] >= 101
+    [@infinity, @infinity_neg, @nan, @zero, @zero_neg].each do |value|
+      value.precs[1].should >= 1
+    end
+  end
+end
+