Demonstrate roundtrip works with .json

solr/packaging/test/test_roundtrip_export_import.bats

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+#!/usr/bin/env bats
+
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+load bats_helper
+
+setup() {
+  common_clean_setup
+}
+
+teardown() {
+  # save a snapshot of SOLR_HOME for failed tests
+  save_home_on_failure
+
+  solr stop --all >/dev/null 2>&1
+}
+
+@test "roundtrip export and import using post command" {
+  run solr start -e techproducts
+  run solr export --solr-url http://localhost:${SOLR_PORT} --name techproducts --query "*:* -id:test" --output "${BATS_TEST_TMPDIR}/output"
+
+  assert [ -e ${BATS_TEST_TMPDIR}/output.json ]
+
+  run solr create -c COLL_NAME -d sample_techproducts_configs
+
+  run solr post --solr-url http://localhost:${SOLR_PORT} -c COLL_NAME ${BATS_TEST_TMPDIR}/output.json
+
+  assert_output --partial '1 files indexed.'
+  refute_output --partial 'ERROR'
+  run curl "http://localhost:${SOLR_PORT}/solr/COLL_NAME/select?q=*:*"
+  assert_output --partial '"numFound":32'
+
+}