delete SDK repo and edit readme (#1054)

### What problem does this PR solve?

delete SDK repo and edit readme

### Type of change

- [x] New Feature (non-breaking change which adds functionality)

sdk/python/test/test_basic.py

@@ -2,9 +2,16 @@ from test_sdkbase import TestSdk
 import ragflow
 from ragflow.ragflow import RAGFLow
 import pytest
+from unittest.mock import MagicMock
 
 
 class TestCase(TestSdk):
+
+    @pytest.fixture
+    def ragflow_instance(self):
+        # Here we create a mock instance of RAGFlow for testing
+        return ragflow.ragflow.RAGFLow('123', 'url')
+
     def test_version(self):
         print(ragflow.__version__)
 
@@ -12,4 +19,33 @@ class TestCase(TestSdk):
         assert ragflow.ragflow.RAGFLow('123', 'url').create_dataset('abc') == 'abc'
 
     def test_delete_dataset(self):
-        assert ragflow.ragflow.RAGFLow('123', 'url').delete_dataset('abc') == 'abc'
+        assert ragflow.ragflow.RAGFLow('123', 'url').delete_dataset('abc') == 'abc'
+
+    def test_list_dataset_success(self, ragflow_instance, monkeypatch):
+        # Mocking the response of requests.get method
+        mock_response = MagicMock()
+        mock_response.status_code = 200
+        mock_response.json.return_value = {'datasets': [{'id': 1, 'name': 'dataset1'}, {'id': 2, 'name': 'dataset2'}]}
+
+        # Patching requests.get to return the mock_response
+        monkeypatch.setattr("requests.get", MagicMock(return_value=mock_response))
+
+        # Call the method under test
+        result = ragflow_instance.list_dataset()
+
+        # Assertion
+        assert result == [{'id': 1, 'name': 'dataset1'}, {'id': 2, 'name': 'dataset2'}]
+
+    def test_list_dataset_failure(self, ragflow_instance, monkeypatch):
+        # Mocking the response of requests.get method
+        mock_response = MagicMock()
+        mock_response.status_code = 404  # Simulating a failed request
+
+        # Patching requests.get to return the mock_response
+        monkeypatch.setattr("requests.get", MagicMock(return_value=mock_response))
+
+        # Call the method under test
+        result = ragflow_instance.list_dataset()
+
+        # Assertion
+        assert result is None