Clear cmd.

lib/cli.js

@@ -25,6 +25,9 @@ app.cmd(/version/, commands.version);
 // Lists all todo items.
 app.cmd(/ls/, commands.list);
 
+// Clears the whole todo.
+app.cmd(/clear/, commands.clear);
+
 // Marks a todo item as done.
 app.cmd(/check (.+)/, commands.check);
 

lib/commands.js

@@ -122,7 +122,23 @@ commands.delete = function(num) {
   num = +num - 1;
   storage.get('items', function(err, items) {
     items || (items = []);
-    items = items.splice(num, 1);
+    items.splice(num, 1);
+    storage.set('items', items, function() {
+      storage.save(function(err) {
+        if (err) throw err;
+      });
+    });
+  });
+};
+
+/**
+ * Clears the whole todo item.
+ * 
+ * @param {String} Todo item number.
+ * @api public
+ */
+commands.clear = function(num) {
+  storage.set('items', [], function(err, items) {
     storage.save(function(err) {
       if (err) throw err;
     });

test/cli.test.js

@@ -32,6 +32,7 @@ describe('cli', function() {
   it('should register routes', function() {
     cli.router.routes.version.on.should.eql(commands.version);
     cli.router.routes.ls.on.should.eql(commands.list);
+    cli.router.routes.clear.on.should.eql(commands.clear);
     cli.router.routes.rm['(.+)'].on.should.eql(commands.delete);
     cli.router.routes.check['(.+)'].on.should.eql(commands.check);
     cli.router.routes.undo['(.+)'].on.should.eql(commands.undo);

test/commands.test.js

@@ -134,4 +134,20 @@ describe('commands', function() {
       commands.add('Foo bar');
     });
   });
+
+  describe('.clear()', function(done) {
+    it('should clear the todo', function(done) {
+      sinon.stub(storage, 'set', function(key, value, cb) {
+        key.should.eql('items');
+        value.should.eql([]);
+        cb();
+      });
+      sinon.stub(storage, 'save', function(key, cb) {
+        storage.set.restore();
+        storage.save.restore();
+        done();
+      });
+      commands.clear();
+    });
+  });
 });