Found duplicated primary key value Summer founders program, which violates the uniqueness constraint of the primary key column.[Bug]: about llama_index HOT 1 OPEN

from llama_index.legacy.indices.knowledge_graph.base import KnowledgeGraphIndex
from llama_index.legacy.schema import TextNode
from llama_index.legacy.service_context import ServiceContext

# Create an instance of KnowledgeGraphIndex
index = KnowledgeGraphIndex([], service_context=ServiceContext())

# Define your triplets and nodes
triplets = [
    ("foo", "is", "bar"),
    ("hello", "is not", "world"),
    ("Jane", "is mother of", "Bob"),
]
nodes = [TextNode(text=str(tup)) for tup in triplets]

# Add triplets and nodes to the index
for triplet, node in zip(triplets, nodes):
    index.upsert_triplet_and_node(triplet, node)

from unittest.mock import patch
from llama_index.legacy.indices.knowledge_graph.base import KnowledgeGraphIndex
from llama_index.legacy.schema import TextNode
from llama_index.legacy.service_context import ServiceContext

@patch.object(KnowledgeGraphIndex, "_extract_triplets", side_effect=mock_extract_triplets)
def test_build_kg_manual(_patch_extract_triplets, mock_service_context):
    index = KnowledgeGraphIndex([], service_context=mock_service_context)
    tuples = [
        ("foo", "is", "bar"),
        ("hello", "is not", "world"),
        ("Jane", "is mother of", "Bob"),
    ]
    nodes = [TextNode(text=str(tup)) for tup in tuples]
    for tup, node in zip(tuples, nodes):
        index.upsert_triplet_and_node(tup, node)

    # Verify the nodes and triplets
    docstore_nodes = index.docstore.get_nodes(list(index.index_struct.node_ids))
    table_chunks = {n.get_content() for n in docstore_nodes}
    assert len(table_chunks) == 3
    assert "('foo', 'is', 'bar')" in table_chunks
    assert "('hello', 'is not', 'world')" in table_chunks
    assert "('Jane', 'is mother of', 'Bob')" in table_chunks

    # Test inserting the same node twice
    node = TextNode(text=str(("foo", "is", "bar")), id_="test_node")
    index.upsert_triplet_and_node(tup, node)
    index.upsert_triplet_and_node(tup, node)