Merge pull request #478 from APIs-guru/master

[fix] Generation of float numbers

2 files changed, 11 insertions, 1 deletions

diff --git a/lib/random.js b/lib/random.js
index d5f112ce..17b74f64 100644
--- a/lib/random.js
+++ b/lib/random.js
@@ -47,8 +47,10 @@ function Random (faker, seed) {
       max += options.precision;
     }
 
-    var randomNumber = options.precision * Math.floor(
+    var randomNumber = Math.floor(
       mersenne.rand(max / options.precision, options.min / options.precision));
+    // Workaround problem in Float point arithmetics for e.g. 6681493 / 0.01
+    randomNumber = randomNumber / (1 / options.precision);
 
     return randomNumber;
 
diff --git a/test/random.unit.js b/test/random.unit.js
index 6214039b..133fd887 100644
--- a/test/random.unit.js
+++ b/test/random.unit.js
@@ -56,6 +56,14 @@ describe("random.js", function () {
 
     });
 
+    it("provides numbers with a with exact precision", function() {
+      var options = { min: 0.5, max: 0.99, precision: 0.01 };
+      for(var i = 0; i < 100; i++) {
+        var number = faker.random.number(options);
+        assert.equal(number, Number(number.toFixed(2)));
+      }
+    });
+
     it("should not modify the input object", function() {
       var min = 1;
       var max = 2;