Added support for percentages

Got the code for rounding to the nearest 10th decimal spot from
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global
_Objects/Math/round

Author: niemyjski

bower.json

@@ -1,15 +1,15 @@
 {
   "name": "angular-filters",
-  "version": "1.2.0",
+  "version": "1.3.0",
   "main": "./dist/angular-filters.min.js",
   "description": "Useful filters for AngularJS",
   "repository": {
     "type": "git",
-    "url": "git://github.com/niemyjski/angular-filters.git"
+    "url": "git://github.com/exceptionless/angular-filters.git"
   },
   "dependencies": {
-    "angular": ">=1.3.x",
-    "angular-mocks": ">=1.3.x"
+    "angular": "^1.5.3",
+    "angular-mocks": "^1.5.3"
   },
   "ignore": [
     "node_modules"

dist/angular-filters.js

@@ -1,6 +1,6 @@
 /**
  * Useful filters for AngularJS
- * @version v1.2.0 - 2015-01-30 * @link https://github.com/exceptionless/angular-filters
+ * @version v1.3.0 - 2016-04-04 * @link https://github.com/exceptionless/angular-filters
  * @author Blake Niemyjski <[email protected]>
  * @license MIT License, http://www.opensource.org/licenses/MIT
  */(function () {
@@ -69,6 +69,30 @@
         }]);
 }());
 
+(function () {
+    'use strict';
+
+    angular.module('angular-filters')
+        .filter('percentage', ['$filter', function ($filter) {
+            return function(input) {
+                if (isNaN(input) || input === null || input === '' || input === false || input === true) {
+                    return '0%';
+                }
+
+                if (input > 0.0 && input < 1) {
+                    // Shift
+                    input = input.toString().split('e');
+                    input = Math.ceil(+(input[0] + 'e' + (input[1] ? (+input[1] + 1) : 1)));
+                    // Shift back
+                    input = input.toString().split('e');
+                    return +(input[0] + 'e' + (input[1] ? (+input[1] - 1) : -1)) + '%';
+                }
+
+                return $filter('number')(input, (input % 1 === 0) ? 0 : 1) + '%';
+            };
+        }]);
+}());
+
 (function () {
     'use strict';
 

dist/angular-filters.min.js

@@ -1,59 +1,28 @@
-// Karma configuration
-// Generated on Fri Aug 09 2013 14:14:35 GMT-0500 (CDT)
-
 module.exports = function(config) {
   config.set({
-    // base path, that will be used to resolve files and exclude
     basePath: '',
     frameworks: ["jasmine"],
 
-    // list of files / patterns to load in the browser
     files: [
-      'bower_components/angular/angular.js',
-      'bower_components/angular-mocks/angular-mocks.js',
+      'node_modules/angular/angular.js',
+      'node_modules/angular-mocks/angular-mocks.js',
       'src/angular-filters.js',
       'src/**/*.js'
     ],
 
-    // list of files to exclude
-    exclude: [
-    ],
-
-    // test results reporter to use
-    // possible values: 'dots', 'progress', 'junit'
+    exclude: [],
     reporters: ['mocha'],
-
-    // web server port
     port: 9876,
-
-    // cli runner port
     runnerPort: 9100,
-
-    // enable / disable colors in the output (reporters and logs)
     colors: true,
 
-    // level of logging
     // possible values: LOG_DISABLE || LOG_ERROR || LOG_WARN || LOG_INFO || LOG_DEBUG
     logLevel: config.LOG_WARN,
-
-    // enable / disable watching file and executing tests whenever any file changes
     autoWatch: true,
 
-    // Start these browsers, currently available:
-    // - Chrome
-    // - ChromeCanary
-    // - Firefox
-    // - Opera
-    // - Safari (only Mac)
-    // - PhantomJS
-    // - IE (only Windows)
     browsers: ['PhantomJS'],
 
-    // If browser does not capture in given timeout [ms], kill it
     captureTimeout: 60000,
-
-    // Continuous Integration mode
-    // if true, it capture browsers, run tests and exit
     singleRun: true
   });
 };

karma.conf.js

@@ -1,7 +1,7 @@
 {
   "name": "angular-filters",
   "description": "Useful filters for AngularJS",
-  "version": "1.2.0",
+  "version": "1.3.0",
   "filename": "angular-filters.min.js",
   "main": "./dist/angular-filters.min.js",
   "homepage": "https://github.com/exceptionless/angular-filters",
@@ -10,9 +10,6 @@
     "type": "git",
     "url": "git://github.com/exceptionless/angular-filters.git"
   },
-  "engines": {
-    "node": ">= 0.9"
-  },
   "keywords": [
     "angular",
     "client",
@@ -29,22 +26,26 @@
       "website": "http://niemyjski.com"
     }
   ],
+  "dependencies": {
+    "angular": "^1.5.3",
+    "angular-mocks": "^1.5.3"
+  },
   "devDependencies": {
-    "grunt-cli": ">= 0.1.7",
-    "grunt-contrib-concat": "*",
-    "grunt-contrib-jshint": "*",
-    "grunt-contrib-uglify": "*",
-    "grunt-bower": "*",
-    "grunt-bower-task": "*",
-
-    "grunt-karma": "latest",
-    "grunt-conventional-changelog": "0.0.12",
-    "karma": "~0.12.1",
-    "karma-mocha-reporter": "0.2.8",
-    "karma-jasmine": "~0.1.5",
-    "karma-chrome-launcher": "~0.1.2",
-    "karma-phantomjs-launcher": "~0.1.2",
-    "karma-firefox-launcher": "~0.1.3"
+    "grunt": "0.4.5",
+    "grunt-bower": "0.21",
+    "grunt-bower-task": "0.4",
+    "grunt-cli": "1.2.0",
+    "grunt-contrib-concat": "1.0",
+    "grunt-contrib-jshint": "1.0",
+    "grunt-contrib-uglify": "1.0",
+    "grunt-conventional-changelog": "6.1.0",
+    "grunt-karma": "0.12",
+    "jasmine-core": "2.4.1",
+    "karma": "0.13.22",
+    "karma-jasmine": "0.3.8",
+    "karma-mocha-reporter": "2.0.0",
+    "karma-phantomjs-launcher": "1.0.0",
+    "phantomjs-prebuilt": "2.1.7"
   },
   "scripts": {
     "test": "grunt test --verbose"

package.json

@@ -0,0 +1,32 @@
+describe('Filter: percentage', function() {
+    beforeEach(module('angular-filters'));
+
+    // initialize a new instance of the filter before each test
+    var percentage;
+    beforeEach(inject(function ($filter) {
+        percentage = $filter('percentage');
+    }));
+
+    it('should return 0% when invalid value is passed in', function () {
+        expect(percentage()).toBe('0%');
+        expect(percentage(null)).toBe('0%');
+        expect(percentage(true)).toBe('0%');
+        expect(percentage(false)).toBe('0%');
+        expect(percentage('')).toBe('0%');
+    });
+
+    it('should return number % when number is passed in', function () {
+        expect(percentage(123)).toBe('123%');
+    });
+
+    it('should return rounded %', function () {
+        expect(percentage(0)).toBe('0%');
+        expect(percentage(0.00001)).toBe('0.1%');
+        expect(percentage(0.0001)).toBe('0.1%');
+        expect(percentage(0.001)).toBe('0.1%');
+        expect(percentage(0.01)).toBe('0.1%');
+        expect(percentage(0.1)).toBe('0.1%');
+        expect(percentage(0.6)).toBe('0.6%');
+        expect(percentage(0.61)).toBe('0.7%');
+    });
+});

src/percentage/percentage-filter-spec.js

@@ -0,0 +1,23 @@
+(function () {
+    'use strict';
+
+    angular.module('angular-filters')
+        .filter('percentage', ['$filter', function ($filter) {
+            return function(input) {
+                if (isNaN(input) || input === null || input === '' || input === false || input === true) {
+                    return '0%';
+                }
+
+                if (input > 0.0 && input < 1) {
+                    // Shift
+                    input = input.toString().split('e');
+                    input = Math.ceil(+(input[0] + 'e' + (input[1] ? (+input[1] + 1) : 1)));
+                    // Shift back
+                    input = input.toString().split('e');
+                    return +(input[0] + 'e' + (input[1] ? (+input[1] - 1) : -1)) + '%';
+                }
+
+                return $filter('number')(input, (input % 1 === 0) ? 0 : 1) + '%';
+            };
+        }]);
+}());