Store#clear to return self

* src/store/MemoryStore.js (clear): Promise resolve to self.
* src/store/Store.js (clear): Update docblock.
* test/store/MemoryStoreTest.js: Update test case accordingly.

DEV-2296

1 files changed, 10 insertions, 0 deletions

diff --git a/test/store/MemoryStoreTest.js b/test/store/MemoryStoreTest.js
index 452dbbb..5dcc332 100644
--- a/test/store/MemoryStoreTest.js
+++ b/test/store/MemoryStoreTest.js
@@ -103,6 +103,16 @@ describe( 'store.MemoryStore', () =>
                 );
             } );
         } );
+
+
+        it( 'returns self with promise', () =>
+        {
+            const sut = Sut();
+
+            return expect(
+                sut.clear()
+            ).to.eventually.equal( sut );
+        } );
     } );