hugegraph-ml/src/tests/test_tasks/test_node_embed.py

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import unittest

from hugegraph_ml.data.hugegraph2dgl import HugeGraph2DGL
from hugegraph_ml.models.dgi import DGI
from hugegraph_ml.tasks.node_embed import NodeEmbed


class TestNodeEmbed(unittest.TestCase):
    def setUp(self):
        self.hg2d = HugeGraph2DGL()
        self.graph = self.hg2d.convert_graph(vertex_label="CORA_vertex", edge_label="CORA_edge")
        self.embed_size = 512

    def test_check_graph(self):
        try:
            NodeEmbed(
                graph=self.graph,
                model=DGI(n_in_feats=self.graph.ndata["feat"].shape[1], n_hidden=self.embed_size),
            )
        except ValueError as e:
            self.fail(f"_check_graph failed: {e!s}")

    def test_train_and_embed(self):
        node_embed_task = NodeEmbed(
            graph=self.graph,
            model=DGI(n_in_feats=self.graph.ndata["feat"].shape[1], n_hidden=self.embed_size),
        )
        self.graph = node_embed_task.train_and_embed(n_epochs=5, patience=5)
        embed_feat_dim = self.graph.ndata["feat"].shape[1]
        self.assertEqual(
            embed_feat_dim,
            self.embed_size,
            f"Expected node feature dimension {self.embed_size}, but got {embed_feat_dim}.",
        )