Merge pull request #488 from blackflux/dev

[Gally]: master <- dev
blackflux · Aug 5, 2019 · dd02c4b · dd02c4b
2 parents c657e0f + 14d660d
commit dd02c4b
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diff --git a/src/plugin/strategies.js b/src/plugin/strategies.js
@@ -46,6 +46,7 @@ module.exports = {
     });
     return changeset.concat(existing);
   },
+  'append-new': (existing, changeset) => existing.concat(changeset.filter(e => !existing.includes(e))),
   'merge-shallow': (existing, changeset) => Object.assign(existing, changeset),
   'merge-deep': (existing, changeset) => deepmerge(existing, changeset, { arrayMerge }),
   'default-shallow': (existing, changeset) => Object.assign(changeset, existing),

diff --git a/test/plugin/strategies.spec.js b/test/plugin/strategies.spec.js
@@ -23,6 +23,14 @@ describe('Integration strategies.js', () => {
       .to.deep.equal(['new', 'title1', 'title2', '', 'text']);
   });
 
+  it('Testing Merge Strategy: append-new', () => {
+    const existing = ['title1', 'title2', '', 'new', 'text'];
+    expect(strategies['append-new'](existing, ['new']))
+      .to.deep.equal(['title1', 'title2', '', 'new', 'text']);
+    expect(strategies['append-new'](existing, ['new2']))
+      .to.deep.equal(['title1', 'title2', '', 'new', 'text', 'new2']);
+  });
+
   describe('Testing Deep Merge', () => {
     it('Testing Array Concat', () => {
       const existing = { a: { b: ['c'] } };