test: add coinstatsindex getindexinfo coverage, improve current tests

test/functional/rpc_misc.py

@@ -66,25 +66,22 @@ class RpcMiscTest(BitcoinTestFramework):
         assert_equal(node.getindexinfo(), {})
 
         # Restart the node with indices and wait for them to sync
-        self.restart_node(0, ["-txindex", "-blockfilterindex"])
+        self.restart_node(0, ["-txindex", "-blockfilterindex", "-coinstatsindex"])
         self.wait_until(lambda: all(i["synced"] for i in node.getindexinfo().values()))
 
         # Returns a list of all running indices by default
+        values = {"synced": True, "best_block_height": 200}
         assert_equal(
             node.getindexinfo(),
             {
-                "txindex": {"synced": True, "best_block_height": 200},
-                "basic block filter index": {"synced": True, "best_block_height": 200}
+                "txindex": values,
+                "basic block filter index": values,
+                "coinstatsindex": values,
             }
         )
-
         # Specifying an index by name returns only the status of that index
-        assert_equal(
-            node.getindexinfo("txindex"),
-            {
-                "txindex": {"synced": True, "best_block_height": 200},
-            }
-        )
+        for i in {"txindex", "basic block filter index", "coinstatsindex"}:
+            assert_equal(node.getindexinfo(i), {i: values})
 
         # Specifying an unknown index name returns an empty result
         assert_equal(node.getindexinfo("foo"), {})