update sdk document (#2374)

### What problem does this PR solve?

_Briefly describe what this PR aims to solve. Include background context
that will help reviewers understand the purpose of the PR._

### Type of change

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

---------

Co-authored-by: Kevin Hu <kevinhu.sh@gmail.com>

sdk/python/test/ragflow.txt

@@ -0,0 +1 @@
+{"data":null,"retcode":100,"retmsg":"TypeError(\"download_document() got an unexpected keyword argument 'tenant_id'\")"}

sdk/python/test/t_document.py

@@ -0,0 +1,144 @@
+from ragflow import RAGFlow, DataSet, Document
+
+from common import API_KEY, HOST_ADDRESS
+from test_sdkbase import TestSdk
+
+
+class TestDocument(TestSdk):
+    def test_upload_document_with_success(self):
+        """
+        Test ingesting a document into a dataset with success.
+        """
+        # Initialize RAGFlow instance
+        rag = RAGFlow(API_KEY, HOST_ADDRESS)
+
+        # Step 1: Create a new dataset
+        ds = rag.create_dataset(name="God")
+
+        # Ensure dataset creation was successful
+        assert isinstance(ds, DataSet), f"Failed to create dataset, error: {ds}"
+        assert ds.name == "God", "Dataset name does not match."
+
+        # Step 2: Create a new document
+        # The blob is the actual file content or a placeholder in this case
+        name = "TestDocument.txt"
+        blob = b"Sample document content for ingestion test."
+
+        res = rag.create_document(ds, name=name, blob=blob)
+
+        # Ensure document ingestion was successful
+        assert res is True, f"Failed to create document, error: {res}"
+
+    def test_get_detail_document_with_success(self):
+        """
+        Test getting a document's detail with success
+        """
+        rag = RAGFlow(API_KEY, HOST_ADDRESS)
+        doc = rag.get_document(name="TestDocument.txt")
+        assert isinstance(doc, Document), f"Failed to get dataset, error: {doc}."
+        assert doc.name == "TestDocument.txt", "Name does not match"
+
+    def test_update_document_with_success(self):
+        """
+        Test updating a document with success.
+        """
+        rag = RAGFlow(API_KEY, HOST_ADDRESS)
+        doc = rag.get_document(name="TestDocument.txt")
+        if isinstance(doc, Document):
+            doc.parser_method = "manual"
+            res = doc.save()
+            assert res is True, f"Failed to update document, error: {res}"
+        else:
+            assert False, f"Failed to get document, error: {doc}"
+
+    def test_download_document_with_success(self):
+        """
+        Test downloading a document with success.
+        """
+        # Initialize RAGFlow instance
+        rag = RAGFlow(API_KEY, HOST_ADDRESS)
+
+        # Retrieve a document
+        doc = rag.get_document(name="TestDocument.txt")
+
+        # Check if the retrieved document is of type Document
+        if isinstance(doc, Document):
+            # Download the document content and save it to a file
+            try:
+                with open("ragflow.txt", "wb+") as file:
+                    file.write(doc.download())
+                    # Print the document object for debugging
+                print(doc)
+
+                # Assert that the download was successful
+                assert True, "Document downloaded successfully."
+            except Exception as e:
+                # If an error occurs, raise an assertion error
+                assert False, f"Failed to download document, error: {str(e)}"
+        else:
+            # If the document retrieval fails, assert failure
+            assert False, f"Failed to get document, error: {doc}"
+
+    def test_list_all_documents_in_dataset_with_success(self):
+        """
+        Test list all documents into a dataset with success.
+        """
+        # Initialize RAGFlow instance
+        rag = RAGFlow(API_KEY, HOST_ADDRESS)
+
+        # Step 1: Create a new dataset
+        ds = rag.create_dataset(name="God2")
+
+        # Ensure dataset creation was successful
+        assert isinstance(ds, DataSet), f"Failed to create dataset, error: {ds}"
+        assert ds.name == "God2", "Dataset name does not match."
+
+        # Step 2: Create a new document
+        # The blob is the actual file content or a placeholder in this case
+        name1 = "Test Document111.txt"
+        blob1 = b"Sample document content for ingestion test111."
+        name2 = "Test Document222.txt"
+        blob2 = b"Sample document content for ingestion test222."
+
+        rag.create_document(ds, name=name1, blob=blob1)
+        rag.create_document(ds, name=name2, blob=blob2)
+        for d in ds.list_docs(keywords="test", offset=0, limit=12):
+            assert isinstance(d, Document)
+            print(d)
+
+    def test_delete_documents_in_dataset_with_success(self):
+        """
+        Test list all documents into a dataset with success.
+        """
+        # Initialize RAGFlow instance
+        rag = RAGFlow(API_KEY, HOST_ADDRESS)
+
+        # Step 1: Create a new dataset
+        ds = rag.create_dataset(name="God3")
+
+        # Ensure dataset creation was successful
+        assert isinstance(ds, DataSet), f"Failed to create dataset, error: {ds}"
+        assert ds.name == "God3", "Dataset name does not match."
+
+        # Step 2: Create a new document
+        # The blob is the actual file content or a placeholder in this case
+        name1 = "Test Document333.txt"
+        blob1 = b"Sample document content for ingestion test333."
+        name2 = "Test Document444.txt"
+        blob2 = b"Sample document content for ingestion test444."
+        name3='test.txt'
+        path='test_data/test.txt'
+        rag.create_document(ds, name=name3, blob=open(path, "rb").read())
+        rag.create_document(ds, name=name1, blob=blob1)
+        rag.create_document(ds, name=name2, blob=blob2)
+        for d in ds.list_docs(keywords="document", offset=0, limit=12):
+            assert isinstance(d, Document)
+            d.delete()
+            print(d)
+        remaining_docs = ds.list_docs(keywords="rag", offset=0, limit=12)
+        assert len(remaining_docs) == 0, "Documents were not properly deleted."
+
+
+
+
+