From 6696ce2aecf54cbd77b6f5b965a47571e197798f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C5=81ukasz=20Wiktor?= <lukasz.wiktor@gmail.com>
Date: Thu, 3 Dec 2015 11:39:36 +0100
Subject: [PATCH 1/4] added prefix and postfix

---
 test/voucher_codes.spec.js | 25 +++++++++++++++++++++++++
 voucher_codes.js           |  4 +++-
 2 files changed, 28 insertions(+), 1 deletion(-)

diff --git a/test/voucher_codes.spec.js b/test/voucher_codes.spec.js
index 21b9426..8baa70e 100644
--- a/test/voucher_codes.spec.js
+++ b/test/voucher_codes.spec.js
@@ -59,4 +59,29 @@ describe('voucher_codes', function(){
         });
     });
 
+    it('should generate code with prefix', function(){
+        var code = voucher_codes.generate({
+            prefix: "promo-"
+        })[0];
+
+        expect(code.length).toMatch(/^promo-/);
+    });
+
+    it('should generate code with postfix', function(){
+        var code = voucher_codes.generate({
+            postfix: "-extra"
+        })[0];
+
+        expect(code.length).toMatch(/-extra$/);
+    });
+
+    it('should generate code with prefix', function(){
+        var code = voucher_codes.generate({
+            prefix: "promo-",
+            postfix: "-extra"
+        })[0];
+
+        expect(code.length).toMatch(/^promo-.*-extra$/);
+    });
+
 });
\ No newline at end of file
diff --git a/voucher_codes.js b/voucher_codes.js
index 08af16c..bb31202 100644
--- a/voucher_codes.js
+++ b/voucher_codes.js
@@ -23,11 +23,13 @@
     function generateOne(config) {
         var length = config.length || 8;
         var chars = config.charset || charset("alphanumeric");
+        var prefix = config.prefix || "";
+        var postfix = config.postfix || "";
         var code = "";
         for (var i = 0; i < length; i++) {
             code += randomElem(chars);
         }
-        return code;
+        return prefix + code + postfix;
     }
 
     function generate(config) {

From 319d45cfaf36070033895e0a2fb6a2075ca59e72 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C5=81ukasz=20Wiktor?= <lukasz.wiktor@gmail.com>
Date: Thu, 3 Dec 2015 11:56:37 +0100
Subject: [PATCH 2/4] readme - prefix and postfix, config reference

---
 README.md | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/README.md b/README.md
index 555d06b..9010cd8 100644
--- a/README.md
+++ b/README.md
@@ -72,6 +72,31 @@ voucher_codes.generate({
 
 Result: `["odghy", "kZEYc", "eOTCl", "wVCzD"]`
 
+#### Prefix and Postfix
+
+You can optionally surround each generated code with a prefix and/or postfix.
+ 
+For instance:
+```
+voucher_codes.generate({
+    prefix: "promo-",
+    postfix: "-2015"
+});
+```
+
+Result: `["promo-WZ4x1t3U-2015"]`
+
+#### Config reference
+
+| attribute        | default value  | description                                                             |
+|------------------|:--------------:|-------------------------------------------------------------------------|
+| `length`         | `8`            | Number of characters in a generated code (excluding prefix and postfix) |
+| `count`          | `1`            | Number of codes generated.                                              |
+| `charset`        | `alphanumeric` | Characters that can appear in the code.                                 |
+| `prefix`         | `""`           | A text appended before the code.                                        |
+| `postfix`        | `""`           | A text appended after the code.                                         |
+
+
 ### Testing
 
 Install dependencies:

From 9c7f3d2d5abf2d7de28ddbb177edc8c3a5ece091 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C5=81ukasz=20Wiktor?= <lukasz.wiktor@gmail.com>
Date: Thu, 3 Dec 2015 12:01:00 +0100
Subject: [PATCH 3/4] version 0.2.0

---
 package.json | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/package.json b/package.json
index 95706c7..52844dc 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
     "name": "voucher-code-generator",
-    "version": "0.1.0",
+    "version": "0.2.0",
 
     "homepage": "http://www.voucherify.io/",
     "description": "Voucher Code Generator",

From 23e34c03e724f34be31b90b7d3707021a6250209 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C5=81ukasz=20Wiktor?= <lukasz.wiktor@gmail.com>
Date: Thu, 3 Dec 2015 13:37:14 +0100
Subject: [PATCH 4/4] fix tests

---
 test/voucher_codes.spec.js | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/test/voucher_codes.spec.js b/test/voucher_codes.spec.js
index 8baa70e..5b1fb1a 100644
--- a/test/voucher_codes.spec.js
+++ b/test/voucher_codes.spec.js
@@ -64,7 +64,7 @@ describe('voucher_codes', function(){
             prefix: "promo-"
         })[0];
 
-        expect(code.length).toMatch(/^promo-/);
+        expect(code).toMatch(/^promo-/);
     });
 
     it('should generate code with postfix', function(){
@@ -72,7 +72,7 @@ describe('voucher_codes', function(){
             postfix: "-extra"
         })[0];
 
-        expect(code.length).toMatch(/-extra$/);
+        expect(code).toMatch(/-extra$/);
     });
 
     it('should generate code with prefix', function(){
@@ -81,7 +81,7 @@ describe('voucher_codes', function(){
             postfix: "-extra"
         })[0];
 
-        expect(code.length).toMatch(/^promo-.*-extra$/);
+        expect(code).toMatch(/^promo-.*-extra$/);
     });
 
 });
\ No newline at end of file