Test to check errors on applyPatches.complete

Author: piranna

test/patch/apply.js

@@ -534,6 +534,26 @@ describe('patch/apply', function() {
           + 'foo5\n'
     };
 
+    it('should handle errors on complete', function(done) {
+      const expected = new Error();
+
+      applyPatches(patch, {
+        loadFile(index, callback) {
+          callback(undefined, contents[index.index]);
+        },
+        patched(index, content, callback) {
+          callback(expected);
+        },
+        complete(err) {
+          expect(err)
+              .to.equal(expected)
+              .to.not.be.undefined;
+
+          done();
+        }
+      });
+    });
+
     it('should handle multiple files', function(done) {
       applyPatches(patch, {
         loadFile(index, callback) {