Implement upcoming query on store

chainqueue/store/base.py

@@ -95,3 +95,8 @@ class Store:
             entry.retry()
         except StateTransitionInvalid:
             entry.readysend()
+
+
+    def fail(self, k):
+        entry = QueueEntry(self, k)
+        entry.reject()

tests/test_integrate.py

@@ -43,7 +43,7 @@ class TestIntegrateBase(TestShepBase):
         self.store.put(b'foo'.hex(), b'bar'.hex(), cache_adapter=MockCacheTokenTx)
 
 
-    def test_state_move(self):
+    def test_state_enqueu(self):
         hx = b'foo'.hex()
         self.store.put(hx, b'bar'.hex(), cache_adapter=MockCacheTokenTx)
         self.store.get(hx)
@@ -53,5 +53,12 @@ class TestIntegrateBase(TestShepBase):
         self.assertEqual(v[0], hx)
 
 
+    def test_state_defer(self):
+        hx = b'foo'.hex()
+        self.store.put(hx, b'bar'.hex(), cache_adapter=MockCacheTokenTx)
+        self.store.get(hx)
+        self.store.fail(hx)
+
+
 if __name__ == '__main__':
     unittest.main()