1 files changed, 55 insertions, 0 deletions
diff --git a/spec/ruby/library/bigdecimal/limit_spec.rb b/spec/ruby/library/bigdecimal/limit_spec.rb
new file mode 100644
index 0000000000..75cbc8b55c
--- /dev/null
+++ b/spec/ruby/library/bigdecimal/limit_spec.rb
@@ -0,0 +1,55 @@
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
+require 'bigdecimal'
+
+describe "BigDecimal.limit" do
+  it "returns the value before set if the passed argument is nil or is not specified" do
+    old = BigDecimal.limit
+    BigDecimal.limit.should == 0
+    BigDecimal.limit(10).should == 0
+    BigDecimal.limit.should == 10
+    BigDecimal.limit(old)
+  end
+
+  it "uses the global limit if no precision is specified" do
+    BigDecimalSpecs.with_limit(0) do
+      (BigDecimal('0.888') + BigDecimal('0')).should == BigDecimal('0.888')
+      (BigDecimal('0.888') - BigDecimal('0')).should == BigDecimal('0.888')
+      (BigDecimal('0.888') * BigDecimal('3')).should == BigDecimal('2.664')
+      (BigDecimal('0.888') / BigDecimal('3')).should == BigDecimal('0.296')
+    end
+
+    BigDecimalSpecs.with_limit(1) do
+      (BigDecimal('0.888') + BigDecimal('0')).should == BigDecimal('0.9')
+      (BigDecimal('0.888') - BigDecimal('0')).should == BigDecimal('0.9')
+      (BigDecimal('0.888') * BigDecimal('3')).should == BigDecimal('3')
+      (BigDecimal('0.888') / BigDecimal('3')).should == BigDecimal('0.3')
+    end
+
+    BigDecimalSpecs.with_limit(2) do
+      (BigDecimal('0.888') + BigDecimal('0')).should == BigDecimal('0.89')
+      (BigDecimal('0.888') - BigDecimal('0')).should == BigDecimal('0.89')
+      (BigDecimal('0.888') * BigDecimal('3')).should == BigDecimal('2.7')
+      (BigDecimal('0.888') / BigDecimal('3')).should == BigDecimal('0.30')
+    end
+  end
+
+  it "picks the specified precision over global limit" do
+    BigDecimalSpecs.with_limit(3) do
+      BigDecimal('0.888').add(BigDecimal('0'), 2).should == BigDecimal('0.89')
+      BigDecimal('0.888').sub(BigDecimal('0'), 2).should == BigDecimal('0.89')
+      BigDecimal('0.888').mult(BigDecimal('3'), 2).should == BigDecimal('2.7')
+      BigDecimal('0.888').div(BigDecimal('3'), 2).should == BigDecimal('0.30')
+    end
+  end
+
+  it "picks the global precision when limit 0 specified" do
+    BigDecimalSpecs.with_limit(3) do
+      BigDecimal('0.8888').add(BigDecimal('0'), 0).should == BigDecimal('0.889')
+      BigDecimal('0.8888').sub(BigDecimal('0'), 0).should == BigDecimal('0.889')
+      BigDecimal('0.888').mult(BigDecimal('3'), 0).should == BigDecimal('2.66')
+      BigDecimal('0.8888').div(BigDecimal('3'), 0).should == BigDecimal('0.296')
+    end
+  end
+
+end