feat: expose implementation

javiercejudo · Feb 13, 2016 · 068faae · 068faae
1 parent 2d15059
commit 068faae
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diff --git a/src/index.js b/src/index.js
@@ -23,6 +23,7 @@ module.exports = function factory(adapter) {
   Decimal.getPrecision = getPrecision;
   Decimal.setPrecision = setPrecision;
   Decimal.JSONReviver = JSONReviver;
+  Decimal.Impl = Impl;
 
   var p = Decimal.prototype;
 

diff --git a/test/spec.js b/test/spec.js
@@ -45,6 +45,20 @@ describe('core functionality', function() {
     });
   });
 
+  describe('implementation', function() {
+    it('should expose the implementation constructor', function() {
+      new Decimal.Impl(2).plus(new Decimal.Impl(3)).valueOf().should.be.exactly(5);
+    });
+
+    it('should be able to set the current precision', function() {
+      var initialPrecision = Decimal.getPrecision();
+
+      Decimal.setPrecision(42);
+      Decimal.getPrecision().should.be.exactly(42);
+      Decimal.setPrecision(initialPrecision);
+    });
+  });
+
   describe('toString, valueOf and JSON', function() {
     it('should be able to return a string representation', function() {
       var decimalOne = new Decimal('1');