chore: import upstream snapshot with attribution

tests/scripts/task_example_test.sh

@@ -0,0 +1,47 @@
+#!/bin/bash
+
+. /opt/conda/etc/profile.d/conda.sh
+conda activate pytorch-ci
+GCN_EXAMPLE_DIR="./examples/pytorch/"
+
+function fail {
+    echo FAIL: $@
+    exit -1
+}
+
+function usage {
+    echo "Usage: $0 [cpu|gpu]"
+}
+
+# check arguments
+if [ $# -ne 1 ]; then
+    usage
+    fail "Error: must specify device"
+fi
+
+if [ "$1" == "cpu" ]; then
+    dev=-1
+elif [ "$1" == "gpu" ]; then
+    export CUDA_VISIBLE_DEVICES=0
+    dev=0
+else
+    usage
+    fail "Unknown device $1"
+fi
+
+export DGLBACKEND=pytorch
+export DGL_LIBRARY_PATH=${PWD}/build
+export PYTHONPATH=${PWD}/python:$PYTHONPATH
+export DGL_DOWNLOAD_DIR=${PWD}/_download
+
+# test
+
+python3 -m pytest -v --junitxml=pytest_backend.xml --durations=100 tests/examples || fail "sparse examples on $1"
+
+pushd $GCN_EXAMPLE_DIR> /dev/null
+
+python3 pagerank.py || fail "run pagerank.py on $1"
+python3 gcn/train.py --dataset cora || fail "run gcn/train.py on $1"
+python3 lda/lda_model.py || fail "run lda/lda_model.py on $1"
+
+popd > /dev/null