feat(filter): allow map of filters to be registered

This feature adds similar functionality to what `$ControllerProvider.register`
and `$CompileProvider.directive` currently provide by allowing a map of filter
name/factories to be passed as the sole argument to `$FilterProvider.register`
to register all of the specified filters.

Closes #4036
Closes #4091

1 files changed, 47 insertions, 0 deletions

diff --git a/test/ng/filterSpec.js b/test/ng/filterSpec.js
new file mode 100644
index 00000000..fc0571cb
--- /dev/null
+++ b/test/ng/filterSpec.js
@@ -0,0 +1,47 @@
+'use strict';
+
+describe('$filter', function() {
+  var $filterProvider, $filter;
+
+  beforeEach(module(function(_$filterProvider_) {
+    $filterProvider = _$filterProvider_;
+  }));
+
+  beforeEach(inject(function(_$filter_) {
+    $filter = _$filter_;
+  }));
+
+  describe('provider', function() {
+    it('should allow registration of filters', function() {
+      var FooFilter = function() {
+        return function() { return 'foo'; };
+      };
+
+      $filterProvider.register('foo', FooFilter);
+
+      var fooFilter = $filter('foo');
+      expect(fooFilter()).toBe('foo');
+    });
+
+    it('should allow registration of a map of filters', function() {
+      var FooFilter = function() {
+        return function() { return 'foo'; };
+      };
+
+      var BarFilter = function() {
+        return function() { return 'bar'; };
+      };
+
+      $filterProvider.register({
+        'foo': FooFilter,
+        'bar': BarFilter
+      });
+
+      var fooFilter = $filter('foo');
+      expect(fooFilter()).toBe('foo');
+
+      var barFilter = $filter('bar');
+      expect(barFilter()).toBe('bar');
+    });
+  });
+});
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