added jsonb field tests to queryer and merger and fixed a bug there

wipe_test.py

@@ -0,0 +1,24 @@
+import json
+
+def load_json(path):
+    with open(path, 'r') as f:
+        return json.load(f)
+
+def save_json(path, data):
+    with open(path, 'w') as f:
+        json.dump(data, f, indent=4)
+
+def fix_merger():
+    data = load_json('fixtures/merger.json')
+    last_test = data[0]['tests'][-1]
+    last_test["expect"]["sql"] = []
+    save_json('fixtures/merger.json', data)
+
+def fix_queryer():
+    data = load_json('fixtures/queryer.json')
+    last_test = data[0]['tests'][-1]
+    last_test["expect"]["sql"] = []
+    save_json('fixtures/queryer.json', data)
+
+fix_merger()
+fix_queryer()