test(localStorageSpec): test serialization numbers , issue #99

src/angular-local-storage.js

@@ -118,7 +118,7 @@ angularLocalStorage.provider('localStorageService', function() {
       // Let's convert undefined values to null to get the value consistent
       if (typeof value === "undefined") {
         value = null;
-      } else if (angular.isObject(value) || angular.isArray(value) || angular.isNumber(value)) {
+      } else if (angular.isObject(value) || angular.isArray(value) || angular.isNumber(+value || value)) {
         value = angular.toJson(value);
       }
 
@@ -168,13 +168,19 @@ angularLocalStorage.provider('localStorageService', function() {
         return null;
       }
 
-      if (item.charAt(0) === "{" || item.charAt(0) === "[" || angular.isNumber(+item || item)) {
+      if (item.charAt(0) === "{" || item.charAt(0) === "[" || isStringNumber(item)) {
         return angular.fromJson(item);
       }
 
       return item;
     };
 
+    // Test if string is only contains numbers
+    // e.g '1' => true, "'1'" => true
+    function isStringNumber(num) {
+      return  /^-?\d+\.?\d*$/.test(num.replace(/["']/g, ''));
+    }
+
     // Remove an item from local storage
     // Example use: localStorageService.remove('library'); // removes the key/value pair of library='angular'
     var removeFromLocalStorage = function (key) {

test/spec/localStorageSpec.js

@@ -188,6 +188,38 @@ describe('localStorageService', function() {
     );
   });
 
+  it('should be able to set and get integers', function() {
+    inject(
+      addItem('key', 777),
+      expectAdding('ls.key', angular.toJson(777)),
+      expectMatching('key', 777)
+    );
+  });
+
+  it('should be able to set and get float numbers', function() {
+    inject(
+      addItem('key', 123.123),
+      expectAdding('ls.key', angular.toJson(123.123)),
+      expectMatching('key', 123.123)
+    );
+  });
+
+  it('should be able to set and get strings', function() {
+    inject(
+      addItem('key', 'string'),
+      expectAdding('ls.key', 'string'),
+      expectMatching('key', 'string')
+    );
+  });
+
+  it('should be able to set and get numbers as a strings', function() {
+    inject(
+      addItem('key', '777'),
+      expectAdding('ls.key', angular.toJson('777')),
+      expectMatching('key', '777')
+    )
+  });
+
   it('should be able to get items', inject(
     getItem('key'),
     expectGetting('ls.key')