add test suite for b command

Ensuring that the b command works properly cross-terminal has been a
little tricky, so some test commands would help in testing changes.

Test: build/make/tests/roboleaf_tests.sh
Change-Id: Iecff678fbba6e81c211aadd3665839c1c21acc8c

tests/b_tests.sh

@@ -0,0 +1,31 @@
+# Copyright (C) 2022 The Android Open Source Project
+#
+# Licensed 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.
+
+# These commands are expected to always return successfully
+
+trap 'exit 1' ERR
+
+source $(dirname $0)/../envsetup.sh
+
+test_target=//build/bazel/scripts/difftool:difftool
+
+b cquery 'kind(test, //build/bazel/...)'
+b build "$test_target"
+b build "$test_target" --run-soong-tests
+b build --run-soong-tests "$test_target"
+b --run-soong-tests build "$test_target"
+b run $test_target
+b run $test_target -- --help
+b cquery --output=build 'kind(test, //build/bazel/...)'
+b cquery 'kind(test, //build/bazel/...)' --output=build

tests/roboleaf_tests.sh

@@ -0,0 +1,23 @@
+#!/bin/bash -e
+# Copyright (C) 2022 The Android Open Source Project
+#
+# Licensed 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.
+
+tests=(
+ $(dirname $0)/b_tests.sh
+)
+
+for test in $tests; do
+  bash -x $test
+  zsh -x $test
+done