adding reverse filter

skid · Aug 12, 2011 · 0ed82ae · 0ed82ae
1 parent a9d77a0
commit 0ed82ae
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diff --git a/lib/filters.js b/lib/filters.js
@@ -143,6 +143,14 @@ exports.join = function (input, separator) {
     }
 };
 
+exports.reverse = function (input) {
+    if (Array.isArray(input)) {
+        return input.reverse();
+    } else {
+        return input;
+    }
+};
+
 exports.length = function (input) {
     return input.length;
 };

diff --git a/tests/filters.test.js b/tests/filters.test.js
@@ -51,6 +51,13 @@ exports.join = function (test) {
     test.done();
 };
 
+exports.reverse = function (test) {
+    test.deepEqual([3, 2, 1], filters.reverse([1, 2, 3]), 'reverse array');
+    test.strictEqual('asdf', filters.reverse('asdf'), 'reverse string does nothing');
+    test.deepEqual({ 'foo': 'bar' }, filters.reverse({ 'foo': 'bar' }), 'reverse object does nothing');
+    test.done();
+};
+
 exports.length = function (test) {
     var input = [1, 2, 3];
     test.strictEqual(3, filters.length(input));