test_nn.py

from copy import deepcopy

import backend as F

import dgl
import dgl.function as fn
import dgl.nn.tensorflow as nn
import networkx as nx
import numpy as np
import pytest
import scipy as sp
import tensorflow as tf
from tensorflow.keras import layers
from utils import parametrize_idtype
from utils.graph_cases import (
    get_cases,
    random_bipartite,
    random_dglgraph,
    random_graph,
)


def _AXWb(A, X, W, b):
    X = tf.matmul(X, W)
    Y = tf.reshape(tf.matmul(A, tf.reshape(X, (X.shape[0], -1))), X.shape)
    return Y + b


@pytest.mark.parametrize("out_dim", [1, 2])
def test_graph_conv(out_dim):
    g = dgl.DGLGraph(nx.path_graph(3)).to(F.ctx())
    ctx = F.ctx()
    adj = tf.sparse.to_dense(
        tf.sparse.reorder(g.adj_external(transpose=True, ctx=ctx))
    )

    conv = nn.GraphConv(5, out_dim, norm="none", bias=True)
    # conv = conv
    print(conv)
    # test#1: basic
    h0 = F.ones((3, 5))
    h1 = conv(g, h0)
    assert len(g.ndata) == 0
    assert len(g.edata) == 0
    assert F.allclose(h1, _AXWb(adj, h0, conv.weight, conv.bias))
    # test#2: more-dim
    h0 = F.ones((3, 5, 5))
    h1 = conv(g, h0)
    assert len(g.ndata) == 0
    assert len(g.edata) == 0
    assert F.allclose(h1, _AXWb(adj, h0, conv.weight, conv.bias))

    conv = nn.GraphConv(5, out_dim)
    # conv = conv
    # test#3: basic
    h0 = F.ones((3, 5))
    h1 = conv(g, h0)
    assert len(g.ndata) == 0
    assert len(g.edata) == 0
    # test#4: basic
    h0 = F.ones((3, 5, 5))
    h1 = conv(g, h0)
    assert len(g.ndata) == 0
    assert len(g.edata) == 0

    conv = nn.GraphConv(5, out_dim)
    # conv = conv
    # test#3: basic
    h0 = F.ones((3, 5))
    h1 = conv(g, h0)
    assert len(g.ndata) == 0
    assert len(g.edata) == 0
    # test#4: basic
    h0 = F.ones((3, 5, 5))
    h1 = conv(g, h0)
    assert len(g.ndata) == 0
    assert len(g.edata) == 0

    # test rest_parameters
    # old_weight = deepcopy(conv.weight.data)
    # conv.reset_parameters()
    # new_weight = conv.weight.data
    # assert not F.allclose(old_weight, new_weight)


@parametrize_idtype
@pytest.mark.parametrize(
    "g",
    get_cases(["homo", "block-bipartite"], exclude=["zero-degree", "dglgraph"]),
)
@pytest.mark.parametrize("norm", ["none", "both", "right", "left"])
@pytest.mark.parametrize("weight", [True, False])
@pytest.mark.parametrize("bias", [True, False])
@pytest.mark.parametrize("out_dim", [1, 2])
def test_graph_conv2(idtype, g, norm, weight, bias, out_dim):
    g = g.astype(idtype).to(F.ctx())
    conv = nn.GraphConv(5, out_dim, norm=norm, weight=weight, bias=bias)
    ext_w = F.randn((5, out_dim))
    nsrc = g.number_of_src_nodes()
    ndst = g.number_of_dst_nodes()
    h = F.randn((nsrc, 5))
    h_dst = F.randn((ndst, out_dim))
    if weight:
        h_out = conv(g, h)
    else:
        h_out = conv(g, h, weight=ext_w)
    assert h_out.shape == (ndst, out_dim)


@parametrize_idtype
@pytest.mark.parametrize(
    "g", get_cases(["bipartite"], exclude=["zero-degree", "dglgraph"])
)
@pytest.mark.parametrize("norm", ["none", "both", "right"])
@pytest.mark.parametrize("weight", [True, False])
@pytest.mark.parametrize("bias", [True, False])
@pytest.mark.parametrize("out_dim", [1, 2])
def test_graph_conv2_bi(idtype, g, norm, weight, bias, out_dim):
    g = g.astype(idtype).to(F.ctx())
    conv = nn.GraphConv(5, out_dim, norm=norm, weight=weight, bias=bias)
    ext_w = F.randn((5, out_dim))
    nsrc = g.number_of_src_nodes()
    ndst = g.number_of_dst_nodes()
    h = F.randn((nsrc, 5))
    h_dst = F.randn((ndst, out_dim))
    if weight:
        h_out = conv(g, (h, h_dst))
    else:
        h_out = conv(g, (h, h_dst), weight=ext_w)
    assert h_out.shape == (ndst, out_dim)


def test_simple_pool():
    ctx = F.ctx()
    g = dgl.DGLGraph(nx.path_graph(15)).to(F.ctx())

    sum_pool = nn.SumPooling()
    avg_pool = nn.AvgPooling()
    max_pool = nn.MaxPooling()
    sort_pool = nn.SortPooling(10)  # k = 10
    print(sum_pool, avg_pool, max_pool, sort_pool)

    # test#1: basic
    h0 = F.randn((g.num_nodes(), 5))
    h1 = sum_pool(g, h0)
    assert F.allclose(F.squeeze(h1, 0), F.sum(h0, 0))
    h1 = avg_pool(g, h0)
    assert F.allclose(F.squeeze(h1, 0), F.mean(h0, 0))
    h1 = max_pool(g, h0)
    assert F.allclose(F.squeeze(h1, 0), F.max(h0, 0))
    h1 = sort_pool(g, h0)
    assert h1.shape[0] == 1 and h1.shape[1] == 10 * 5 and h1.ndim == 2

    # test#2: batched graph
    g_ = dgl.DGLGraph(nx.path_graph(5)).to(F.ctx())
    bg = dgl.batch([g, g_, g, g_, g])
    h0 = F.randn((bg.num_nodes(), 5))
    h1 = sum_pool(bg, h0)
    truth = tf.stack(
        [
            F.sum(h0[:15], 0),
            F.sum(h0[15:20], 0),
            F.sum(h0[20:35], 0),
            F.sum(h0[35:40], 0),
            F.sum(h0[40:55], 0),
        ],
        0,
    )
    assert F.allclose(h1, truth)

    h1 = avg_pool(bg, h0)
    truth = tf.stack(
        [
            F.mean(h0[:15], 0),
            F.mean(h0[15:20], 0),
            F.mean(h0[20:35], 0),
            F.mean(h0[35:40], 0),
            F.mean(h0[40:55], 0),
        ],
        0,
    )
    assert F.allclose(h1, truth)

    h1 = max_pool(bg, h0)
    truth = tf.stack(
        [
            F.max(h0[:15], 0),
            F.max(h0[15:20], 0),
            F.max(h0[20:35], 0),
            F.max(h0[35:40], 0),
            F.max(h0[40:55], 0),
        ],
        0,
    )
    assert F.allclose(h1, truth)

    h1 = sort_pool(bg, h0)
    assert h1.shape[0] == 5 and h1.shape[1] == 10 * 5 and h1.ndim == 2


def test_glob_att_pool():
    g = dgl.DGLGraph(nx.path_graph(10)).to(F.ctx())

    gap = nn.GlobalAttentionPooling(layers.Dense(1), layers.Dense(10))
    print(gap)

    # test#1: basic
    h0 = F.randn((g.num_nodes(), 5))
    h1 = gap(g, h0)
    assert h1.shape[0] == 1 and h1.shape[1] == 10 and h1.ndim == 2

    # test#2: batched graph
    bg = dgl.batch([g, g, g, g])
    h0 = F.randn((bg.num_nodes(), 5))
    h1 = gap(bg, h0)
    assert h1.shape[0] == 4 and h1.shape[1] == 10 and h1.ndim == 2


@pytest.mark.parametrize("O", [1, 2, 8])
def test_rgcn(O):
    etype = []
    g = dgl.DGLGraph(sp.sparse.random(100, 100, density=0.1), readonly=True).to(
        F.ctx()
    )
    # 5 etypes
    R = 5
    for i in range(g.num_edges()):
        etype.append(i % 5)
    B = 2
    I = 10

    rgc_basis = nn.RelGraphConv(I, O, R, "basis", B)
    rgc_basis_low = nn.RelGraphConv(I, O, R, "basis", B, low_mem=True)
    rgc_basis_low.weight = rgc_basis.weight
    rgc_basis_low.w_comp = rgc_basis.w_comp
    rgc_basis_low.loop_weight = rgc_basis.loop_weight
    h = tf.random.normal((100, I))
    r = tf.constant(etype)
    h_new = rgc_basis(g, h, r)
    h_new_low = rgc_basis_low(g, h, r)
    assert list(h_new.shape) == [100, O]
    assert list(h_new_low.shape) == [100, O]
    assert F.allclose(h_new, h_new_low)

    if O % B == 0:
        rgc_bdd = nn.RelGraphConv(I, O, R, "bdd", B)
        rgc_bdd_low = nn.RelGraphConv(I, O, R, "bdd", B, low_mem=True)
        rgc_bdd_low.weight = rgc_bdd.weight
        rgc_bdd_low.loop_weight = rgc_bdd.loop_weight
        h = tf.random.normal((100, I))
        r = tf.constant(etype)
        h_new = rgc_bdd(g, h, r)
        h_new_low = rgc_bdd_low(g, h, r)
        assert list(h_new.shape) == [100, O]
        assert list(h_new_low.shape) == [100, O]
        assert F.allclose(h_new, h_new_low)

    # with norm
    norm = tf.zeros((g.num_edges(), 1))

    rgc_basis = nn.RelGraphConv(I, O, R, "basis", B)
    rgc_basis_low = nn.RelGraphConv(I, O, R, "basis", B, low_mem=True)
    rgc_basis_low.weight = rgc_basis.weight
    rgc_basis_low.w_comp = rgc_basis.w_comp
    rgc_basis_low.loop_weight = rgc_basis.loop_weight
    h = tf.random.normal((100, I))
    r = tf.constant(etype)
    h_new = rgc_basis(g, h, r, norm)
    h_new_low = rgc_basis_low(g, h, r, norm)
    assert list(h_new.shape) == [100, O]
    assert list(h_new_low.shape) == [100, O]
    assert F.allclose(h_new, h_new_low)

    if O % B == 0:
        rgc_bdd = nn.RelGraphConv(I, O, R, "bdd", B)
        rgc_bdd_low = nn.RelGraphConv(I, O, R, "bdd", B, low_mem=True)
        rgc_bdd_low.weight = rgc_bdd.weight
        rgc_bdd_low.loop_weight = rgc_bdd.loop_weight
        h = tf.random.normal((100, I))
        r = tf.constant(etype)
        h_new = rgc_bdd(g, h, r, norm)
        h_new_low = rgc_bdd_low(g, h, r, norm)
        assert list(h_new.shape) == [100, O]
        assert list(h_new_low.shape) == [100, O]
        assert F.allclose(h_new, h_new_low)

    # id input
    rgc_basis = nn.RelGraphConv(I, O, R, "basis", B)
    rgc_basis_low = nn.RelGraphConv(I, O, R, "basis", B, low_mem=True)
    rgc_basis_low.weight = rgc_basis.weight
    rgc_basis_low.w_comp = rgc_basis.w_comp
    rgc_basis_low.loop_weight = rgc_basis.loop_weight
    h = tf.constant(np.random.randint(0, I, (100,))) * 1
    r = tf.constant(etype) * 1
    h_new = rgc_basis(g, h, r)
    h_new_low = rgc_basis_low(g, h, r)
    assert list(h_new.shape) == [100, O]
    assert list(h_new_low.shape) == [100, O]
    assert F.allclose(h_new, h_new_low)


@parametrize_idtype
@pytest.mark.parametrize(
    "g", get_cases(["homo", "block-bipartite"], exclude=["zero-degree"])
)
@pytest.mark.parametrize("out_dim", [1, 2])
@pytest.mark.parametrize("num_heads", [1, 4])
def test_gat_conv(g, idtype, out_dim, num_heads):
    g = g.astype(idtype).to(F.ctx())
    ctx = F.ctx()
    gat = nn.GATConv(5, out_dim, num_heads)
    feat = F.randn((g.number_of_src_nodes(), 5))
    h = gat(g, feat)
    assert h.shape == (g.number_of_dst_nodes(), num_heads, out_dim)
    _, a = gat(g, feat, get_attention=True)
    assert a.shape == (g.num_edges(), num_heads, 1)

    # test residual connection
    gat = nn.GATConv(5, out_dim, num_heads, residual=True)
    h = gat(g, feat)


@parametrize_idtype
@pytest.mark.parametrize("g", get_cases(["bipartite"], exclude=["zero-degree"]))
@pytest.mark.parametrize("out_dim", [1, 2])
@pytest.mark.parametrize("num_heads", [1, 4])
def test_gat_conv_bi(g, idtype, out_dim, num_heads):
    g = g.astype(idtype).to(F.ctx())
    ctx = F.ctx()
    gat = nn.GATConv(5, out_dim, num_heads)
    feat = (
        F.randn((g.number_of_src_nodes(), 5)),
        F.randn((g.number_of_dst_nodes(), 5)),
    )
    h = gat(g, feat)
    assert h.shape == (g.number_of_dst_nodes(), num_heads, out_dim)
    _, a = gat(g, feat, get_attention=True)
    assert a.shape == (g.num_edges(), num_heads, 1)


@parametrize_idtype
@pytest.mark.parametrize("g", get_cases(["homo", "block-bipartite"]))
@pytest.mark.parametrize("aggre_type", ["mean", "pool", "gcn"])
@pytest.mark.parametrize("out_dim", [1, 10])
def test_sage_conv(idtype, g, aggre_type, out_dim):
    g = g.astype(idtype).to(F.ctx())
    sage = nn.SAGEConv(5, out_dim, aggre_type)
    feat = F.randn((g.number_of_src_nodes(), 5))
    h = sage(g, feat)
    assert h.shape[-1] == out_dim


@parametrize_idtype
@pytest.mark.parametrize("g", get_cases(["bipartite"]))
@pytest.mark.parametrize("aggre_type", ["mean", "pool", "gcn"])
@pytest.mark.parametrize("out_dim", [1, 2])
def test_sage_conv_bi(idtype, g, aggre_type, out_dim):
    g = g.astype(idtype).to(F.ctx())
    dst_dim = 5 if aggre_type != "gcn" else 10
    sage = nn.SAGEConv((10, dst_dim), out_dim, aggre_type)
    feat = (
        F.randn((g.number_of_src_nodes(), 10)),
        F.randn((g.number_of_dst_nodes(), dst_dim)),
    )
    h = sage(g, feat)
    assert h.shape[-1] == out_dim
    assert h.shape[0] == g.number_of_dst_nodes()


@parametrize_idtype
@pytest.mark.parametrize("aggre_type", ["mean", "pool", "gcn"])
@pytest.mark.parametrize("out_dim", [1, 2])
def test_sage_conv_bi_empty(idtype, aggre_type, out_dim):
    # Test the case for graphs without edges
    g = dgl.heterograph({("_U", "_E", "_V"): ([], [])}, {"_U": 5, "_V": 3}).to(
        F.ctx()
    )
    g = g.astype(idtype).to(F.ctx())
    sage = nn.SAGEConv((3, 3), out_dim, "gcn")
    feat = (F.randn((5, 3)), F.randn((3, 3)))
    h = sage(g, feat)
    assert h.shape[-1] == out_dim
    assert h.shape[0] == 3
    for aggre_type in ["mean", "pool", "lstm"]:
        sage = nn.SAGEConv((3, 1), out_dim, aggre_type)
        feat = (F.randn((5, 3)), F.randn((3, 1)))
        h = sage(g, feat)
        assert h.shape[-1] == out_dim
        assert h.shape[0] == 3


@parametrize_idtype
@pytest.mark.parametrize("g", get_cases(["homo"], exclude=["zero-degree"]))
@pytest.mark.parametrize("out_dim", [1, 2])
def test_sgc_conv(g, idtype, out_dim):
    ctx = F.ctx()
    g = g.astype(idtype).to(ctx)
    # not cached
    sgc = nn.SGConv(5, out_dim, 3)
    feat = F.randn((g.num_nodes(), 5))

    h = sgc(g, feat)
    assert h.shape[-1] == out_dim

    # cached
    sgc = nn.SGConv(5, out_dim, 3, True)
    h_0 = sgc(g, feat)
    h_1 = sgc(g, feat + 1)
    assert F.allclose(h_0, h_1)
    assert h_0.shape[-1] == out_dim


@parametrize_idtype
@pytest.mark.parametrize("g", get_cases(["homo"], exclude=["zero-degree"]))
def test_appnp_conv(g, idtype):
    ctx = F.ctx()
    g = g.astype(idtype).to(ctx)
    appnp = nn.APPNPConv(10, 0.1)
    feat = F.randn((g.num_nodes(), 5))

    h = appnp(g, feat)
    assert h.shape[-1] == 5


@parametrize_idtype
@pytest.mark.parametrize("g", get_cases(["homo", "block-bipartite"]))
@pytest.mark.parametrize("aggregator_type", ["mean", "max", "sum"])
def test_gin_conv(g, idtype, aggregator_type):
    g = g.astype(idtype).to(F.ctx())
    ctx = F.ctx()
    gin = nn.GINConv(tf.keras.layers.Dense(12), aggregator_type)
    feat = F.randn((g.number_of_src_nodes(), 5))
    h = gin(g, feat)
    assert h.shape == (g.number_of_dst_nodes(), 12)


@parametrize_idtype
@pytest.mark.parametrize("g", get_cases(["bipartite"]))
@pytest.mark.parametrize("aggregator_type", ["mean", "max", "sum"])
def test_gin_conv_bi(g, idtype, aggregator_type):
    g = g.astype(idtype).to(F.ctx())
    gin = nn.GINConv(tf.keras.layers.Dense(12), aggregator_type)
    feat = (
        F.randn((g.number_of_src_nodes(), 5)),
        F.randn((g.number_of_dst_nodes(), 5)),
    )
    h = gin(g, feat)
    assert h.shape == (g.number_of_dst_nodes(), 12)


@parametrize_idtype
@pytest.mark.parametrize(
    "g", get_cases(["homo", "block-bipartite"], exclude=["zero-degree"])
)
@pytest.mark.parametrize("out_dim", [1, 2])
def test_edge_conv(g, idtype, out_dim):
    g = g.astype(idtype).to(F.ctx())
    edge_conv = nn.EdgeConv(out_dim)

    h0 = F.randn((g.number_of_src_nodes(), 5))
    h1 = edge_conv(g, h0)
    assert h1.shape == (g.number_of_dst_nodes(), out_dim)


@parametrize_idtype
@pytest.mark.parametrize("g", get_cases(["bipartite"], exclude=["zero-degree"]))
@pytest.mark.parametrize("out_dim", [1, 2])
def test_edge_conv_bi(g, idtype, out_dim):
    g = g.astype(idtype).to(F.ctx())
    ctx = F.ctx()
    edge_conv = nn.EdgeConv(out_dim)

    h0 = F.randn((g.number_of_src_nodes(), 5))
    x0 = F.randn((g.number_of_dst_nodes(), 5))
    h1 = edge_conv(g, (h0, x0))
    assert h1.shape == (g.number_of_dst_nodes(), out_dim)


def myagg(alist, dsttype):
    rst = alist[0]
    for i in range(1, len(alist)):
        rst = rst + (i + 1) * alist[i]
    return rst


@parametrize_idtype
@pytest.mark.parametrize("agg", ["sum", "max", "min", "mean", "stack", myagg])
def test_hetero_conv(agg, idtype):
    g = dgl.heterograph(
        {
            ("user", "follows", "user"): ([0, 0, 2, 1], [1, 2, 1, 3]),
            ("user", "plays", "game"): ([0, 0, 0, 1, 2], [0, 2, 3, 0, 2]),
            ("store", "sells", "game"): ([0, 0, 1, 1], [0, 3, 1, 2]),
        },
        idtype=idtype,
        device=F.ctx(),
    )
    conv = nn.HeteroGraphConv(
        {
            "follows": nn.GraphConv(2, 3, allow_zero_in_degree=True),
            "plays": nn.GraphConv(2, 4, allow_zero_in_degree=True),
            "sells": nn.GraphConv(3, 4, allow_zero_in_degree=True),
        },
        agg,
    )
    uf = F.randn((4, 2))
    gf = F.randn((4, 4))
    sf = F.randn((2, 3))

    h = conv(g, {"user": uf, "store": sf, "game": gf})
    assert set(h.keys()) == {"user", "game"}
    if agg != "stack":
        assert h["user"].shape == (4, 3)
        assert h["game"].shape == (4, 4)
    else:
        assert h["user"].shape == (4, 1, 3)
        assert h["game"].shape == (4, 2, 4)

    block = dgl.to_block(
        g.to(F.cpu()), {"user": [0, 1, 2, 3], "game": [0, 1, 2, 3], "store": []}
    ).to(F.ctx())
    h = conv(
        block,
        (
            {"user": uf, "game": gf, "store": sf},
            {"user": uf, "game": gf, "store": sf[0:0]},
        ),
    )
    assert set(h.keys()) == {"user", "game"}
    if agg != "stack":
        assert h["user"].shape == (4, 3)
        assert h["game"].shape == (4, 4)
    else:
        assert h["user"].shape == (4, 1, 3)
        assert h["game"].shape == (4, 2, 4)

    h = conv(block, {"user": uf, "game": gf, "store": sf})
    assert set(h.keys()) == {"user", "game"}
    if agg != "stack":
        assert h["user"].shape == (4, 3)
        assert h["game"].shape == (4, 4)
    else:
        assert h["user"].shape == (4, 1, 3)
        assert h["game"].shape == (4, 2, 4)

    # test with mod args
    class MyMod(tf.keras.layers.Layer):
        def __init__(self, s1, s2):
            super(MyMod, self).__init__()
            self.carg1 = 0
            self.carg2 = 0
            self.s1 = s1
            self.s2 = s2

        def call(self, g, h, arg1=None, *, arg2=None):
            if arg1 is not None:
                self.carg1 += 1
            if arg2 is not None:
                self.carg2 += 1
            return tf.zeros((g.number_of_dst_nodes(), self.s2))

    mod1 = MyMod(2, 3)
    mod2 = MyMod(2, 4)
    mod3 = MyMod(3, 4)
    conv = nn.HeteroGraphConv(
        {"follows": mod1, "plays": mod2, "sells": mod3}, agg
    )
    mod_args = {"follows": (1,), "plays": (1,)}
    mod_kwargs = {"sells": {"arg2": "abc"}}
    h = conv(
        g,
        {"user": uf, "game": gf, "store": sf},
        mod_args=mod_args,
        mod_kwargs=mod_kwargs,
    )
    assert mod1.carg1 == 1
    assert mod1.carg2 == 0
    assert mod2.carg1 == 1
    assert mod2.carg2 == 0
    assert mod3.carg1 == 0
    assert mod3.carg2 == 1

    # conv on graph without any edges
    for etype in g.etypes:
        g = dgl.remove_edges(g, g.edges(form="eid", etype=etype), etype=etype)
    assert g.num_edges() == 0
    h = conv(g, {"user": uf, "game": gf, "store": sf})
    assert set(h.keys()) == {"user", "game"}

    block = dgl.to_block(
        g.to(F.cpu()), {"user": [0, 1, 2, 3], "game": [0, 1, 2, 3], "store": []}
    ).to(F.ctx())
    h = conv(
        block,
        (
            {"user": uf, "game": gf, "store": sf},
            {"user": uf, "game": gf, "store": sf[0:0]},
        ),
    )
    assert set(h.keys()) == {"user", "game"}


@pytest.mark.parametrize("out_dim", [1, 2])
def test_dense_cheb_conv(out_dim):
    for k in range(3, 4):
        ctx = F.ctx()
        g = dgl.DGLGraph(
            sp.sparse.random(100, 100, density=0.1, random_state=42)
        )
        g = g.to(ctx)

        adj = tf.sparse.to_dense(
            tf.sparse.reorder(g.adj_external(transpose=True, ctx=ctx))
        )
        cheb = nn.ChebConv(5, out_dim, k, None, bias=True)
        dense_cheb = nn.DenseChebConv(5, out_dim, k, bias=True)

        # init cheb modules
        feat = F.ones((100, 5))
        out_cheb = cheb(g, feat, [2.0])

        dense_cheb.W = tf.reshape(cheb.linear.weights[0], (k, 5, out_dim))
        if cheb.linear.bias is not None:
            dense_cheb.bias = cheb.linear.bias

        out_dense_cheb = dense_cheb(adj, feat, 2.0)
        print(out_cheb - out_dense_cheb)
        assert F.allclose(out_cheb, out_dense_cheb)


if __name__ == "__main__":
    test_graph_conv()
    # test_set2set()
    test_glob_att_pool()
    test_simple_pool()
    # test_set_trans()
    test_rgcn()
    # test_tagconv()
    test_gat_conv()
    test_sage_conv()
    test_sgc_conv()
    test_appnp_conv()
    test_gin_conv()
    test_edge_conv()
    # test_agnn_conv()
    # test_gated_graph_conv()
    # test_nn_conv()
    # test_gmm_conv()
    # test_dense_graph_conv()
    # test_dense_sage_conv()
    test_dense_cheb_conv()
    # test_sequential()
    test_hetero_conv()