Fix has_doc function (#346)

* Fix has_doc function

Now only gets a specific document in a database instead
of all documents.

* Add integration test

Author: rrooij

terminusdb_client/client/Client.py

@@ -1481,16 +1481,33 @@ def has_doc(self, doc_id: str, graph_type: str = "instance") -> bool:
         graph_type : str
             Graph type, either "instance" or "schema".
 
+        Raises
+        ------
+        InterfaceError
+            if the client does not connect to a database
+
         Returns
         -------
         Bool
             if the document exist
         """
         self._validate_graph_type(graph_type)
         self._check_connection()
-        all_existing_obj = self.get_all_documents(graph_type=graph_type)
-        all_existing_id = [x.get("@id") for x in all_existing_obj]
-        return doc_id in all_existing_id
+
+        response = requests.get(
+            self._documents_url(),
+            headers=self._default_headers,
+            json={"id": doc_id, "graph_type": graph_type},
+            auth=self._auth(),
+        )
+        try:
+            _finish_response(response)
+            return True
+        except DatabaseError as exception:
+            body = exception.error_obj
+            if exception.status_code == 404 and "api:error" in body and body["api:error"]["@type"] == "api:DocumentNotFound":
+                return False
+            raise exception
 
     def get_class_frame(self, class_name):
         """Get the frame of the class of class_name. Provide information about all the avaliable properties of that class.

terminusdb_client/tests/integration_tests/test_client.py

@@ -264,6 +264,18 @@ def test_get_database(docker_url):
         client.get_database("DOES_NOT_EXISTDB")
 
 
+def test_has_doc(docker_url):
+    client = Client(docker_url, user_agent=test_user_agent, team="admin")
+    client.connect()
+    db_name = "testDB" + str(random())
+    client.create_database(db_name, team="admin")
+    client.connect(db=db_name)
+    assert not client.has_doc("THIS_DOCUMENT_DOES_NOT_EXIST")
+    client.insert_document({"test": "test"}, raw_json=True)
+    doc_id = list(client.get_all_documents())[0]["@id"]
+    assert client.has_doc(doc_id)
+
+
 def test_has_database(docker_url):
     client = Client(docker_url, user_agent=test_user_agent, team="admin")
     client.connect()