HADOOP-13094. hadoop-common unit tests for dynamic commands

hadoop-common-project/hadoop-common/src/test/scripts/hadoop-functions_test_helper.bash

@@ -16,7 +16,7 @@
 
 setup() {
 
-  TMP=../../../target/test-dir/bats.$$.${RANDOM}
+  TMP="${BATS_TEST_DIRNAME}/../../../target/test-dir/bats.$$.${RANDOM}"
   mkdir -p ${TMP}
   TMP=$(cd -P -- "${TMP}" >/dev/null && pwd -P)
   export TMP
@@ -38,7 +38,7 @@ setup() {
   # shellcheck disable=SC2034
   QATESTMODE=true
 
-  . ../../main/bin/hadoop-functions.sh
+  . "${BATS_TEST_DIRNAME}/../../main/bin/hadoop-functions.sh"
   pushd "${TMP}" >/dev/null
 }
 

hadoop-common-project/hadoop-common/src/test/scripts/hadoop_subcommands.bats

@@ -0,0 +1,66 @@
+# 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 hadoop-functions_test_helper
+
+# the loading of shell profiles are tested elseswhere
+# this only tests the specific subcommand parts
+
+subcommandsetup () {
+  export HADOOP_LIBEXEC_DIR="${TMP}/libexec"
+  export HADOOP_CONF_DIR="${TMP}/conf"
+  mkdir -p "${HADOOP_LIBEXEC_DIR}/shellprofile.d" "${HADOOP_CONF_DIR}/shellprofile.d"
+  cat <<-'TOKEN'   > "${HADOOP_LIBEXEC_DIR}/hadoop-config.sh"
+
+hadoop_subcommand_sub () {
+  echo "unittest"
+  exit 0
+}
+
+hadoop_subcommand_conftest ()
+{
+  echo conftest
+  exit 0
+}
+
+hadoop_subcommand_envcheck ()
+{
+  echo ${HADOOP_SHELL_EXECNAME}
+  exit 0
+}
+TOKEN
+  chmod a+rx "${HADOOP_LIBEXEC_DIR}/hadoop-config.sh"
+
+}
+
+@test "hadoop_subcommand (addition)" {
+  subcommandsetup
+  run "${BATS_TEST_DIRNAME}/../../main/bin/hadoop" sub
+  echo ">${output}<"
+  [ "${output}" = unittest ]
+}
+
+@test "hadoop_subcommand (substitute)" {
+  subcommandsetup
+  run "${BATS_TEST_DIRNAME}/../../main/bin/hadoop" conftest
+  echo ">${output}<"
+  [ "${output}" = conftest ]
+}
+
+@test "hadoop_subcommand (envcheck)" {
+  subcommandsetup
+  run "${BATS_TEST_DIRNAME}/../../main/bin/hadoop" envcheck
+  [ "${output}" = hadoop ]
+}