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#!/bin/bash
#
# Copyright 2016 The Bazel Authors. All rights reserved.
#
# 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.
#
# This test exercises Bash utility implementations.
# --- begin runfiles.bash initialization ---
set -euo pipefail
if [[ ! -d "${RUNFILES_DIR:-/dev/null}" && ! -f "${RUNFILES_MANIFEST_FILE:-/dev/null}" ]]; then
if [[ -f "$0.runfiles_manifest" ]]; then
export RUNFILES_MANIFEST_FILE="$0.runfiles_manifest"
elif [[ -f "$0.runfiles/MANIFEST" ]]; then
export RUNFILES_MANIFEST_FILE="$0.runfiles/MANIFEST"
elif [[ -f "$0.runfiles/bazel_tools/tools/bash/runfiles/runfiles.bash" ]]; then
export RUNFILES_DIR="$0.runfiles"
fi
fi
if [[ -f "${RUNFILES_DIR:-/dev/null}/bazel_tools/tools/bash/runfiles/runfiles.bash" ]]; then
source "${RUNFILES_DIR}/bazel_tools/tools/bash/runfiles/runfiles.bash"
elif [[ -f "${RUNFILES_MANIFEST_FILE:-/dev/null}" ]]; then
source "$(grep -m1 "^bazel_tools/tools/bash/runfiles/runfiles.bash " \
"$RUNFILES_MANIFEST_FILE" | cut -d ' ' -f 2-)"
else
echo >&2 "ERROR: cannot find @bazel_tools//tools/bash/runfiles:runfiles.bash"
exit 1
fi
# --- end runfiles.bash initialization ---
source "$(rlocation "io_bazel/src/test/shell/unittest.bash")" \
|| { echo "Could not source unittest.bash" >&2; exit 1; }
source "$(rlocation "io_bazel/src/test/shell/shell_utils.sh")" \
|| { echo "Could not source shell_utils.sh" >&2; exit 1; }
cd "$TEST_TMPDIR"
function assert_fails_to() {
local -r method="$1"
local -r arg="${2:-}"
if [[ -n "$arg" ]]; then
"$method" "$arg" && fail "'$method' should have failed for '$arg'"
else
"$method" && fail "'$method' should have failed for empty argument"
fi
true # reset the exit status otherwise the test would be considered failed
}
function test_resolve_bad_links() {
local -r dir="${FUNCNAME[0]}"
mkdir -p "$dir" || fail "mkdir -p $dir"
# absolute, non-existent path
assert_fails_to resolve_links "$(pwd)/${dir}/non-existent"
# relative, non-existent path
assert_fails_to resolve_links "${dir}/non-existent"
# symlink with absolute non-existent target
ln -s "/non-existent" "${dir}/bad-absolute.sym"
assert_fails_to resolve_links "$(pwd)/${dir}/bad-absolute.sym"
assert_fails_to resolve_links "${dir}/bad-absolute.sym"
# symlink with relative non-existent target
ln -s "non-existent" "${dir}/bad-relative.sym"
assert_fails_to resolve_links "$(pwd)/${dir}/bad-relative.sym"
assert_fails_to resolve_links "${dir}/bad-relative.sym"
# circular symlink
ln -s "circular.sym" "${dir}/circular.sym"
assert_fails_to resolve_links "$(pwd)/${dir}/circular.sym"
assert_fails_to resolve_links "${dir}/circular.sym"
}
function test_resolve_symlinks() {
local -r dir="${FUNCNAME[0]}"
mkdir -p "${dir}/a/b" || fail "mkdir -p ${dir}/a/b"
echo hello > "${dir}/hello.txt"
ln -s "." "${dir}/self"
ln -s "../hello.txt" "${dir}/a/sym"
ln -s "../sym" "${dir}/a/b/sym"
ln -s ".././sym" "${dir}/a/b/sym-not-normalized"
assert_equals "${dir}/." "$(resolve_links "${dir}/self")"
assert_equals "${dir}/a/../hello.txt" "$(resolve_links "${dir}/a/sym")"
assert_equals "${dir}/a/b/../../hello.txt" "$(resolve_links "${dir}/a/b/sym")"
assert_equals \
"${dir}/a/b/.././../hello.txt" \
"$(resolve_links "${dir}/a/b/sym-not-normalized")"
cd "$dir"
assert_equals "./." "$(resolve_links "self")"
assert_equals "./." "$(resolve_links "./self")"
assert_equals "a/../hello.txt" "$(resolve_links "a/sym")"
assert_equals "a/b/../../hello.txt" "$(resolve_links "a/b/sym")"
assert_equals \
"a/b/.././../hello.txt" \
"$(resolve_links "a/b/sym-not-normalized")"
cd a
assert_equals "../." "$(resolve_links "../self")"
assert_equals "./../hello.txt" "$(resolve_links "sym")"
assert_equals "./../hello.txt" "$(resolve_links "./sym")"
assert_equals "b/../../hello.txt" "$(resolve_links "b/sym")"
assert_equals \
"b/.././../hello.txt" \
"$(resolve_links "b/sym-not-normalized")"
cd b
assert_equals "../../." "$(resolve_links "../../self")"
assert_equals "../../hello.txt" "$(resolve_links "../sym")"
assert_equals "./../../hello.txt" "$(resolve_links "sym")"
assert_equals "./../../hello.txt" "$(resolve_links "./sym")"
assert_equals \
"./.././../hello.txt" \
"$(resolve_links "sym-not-normalized")"
}
function test_get_realpath() {
local -r dir="${FUNCNAME[0]}"
mkdir -p "${dir}/a/b" || fail "mkdir -p ${dir}/a/b"
echo hello > "${dir}/hello.txt"
ln -s "." "${dir}/self"
ln -s "../hello.txt" "${dir}/a/sym"
ln -s "../sym" "${dir}/a/b/sym"
ln -s ".././sym" "${dir}/a/b/sym-not-normalized"
assert_equals "$(pwd)/${dir}" "$(get_real_path "${dir}/self")"
assert_equals "$(pwd)/${dir}/hello.txt" "$(get_real_path "${dir}/a/sym")"
assert_equals "$(pwd)/${dir}/hello.txt" "$(get_real_path "${dir}/a/b/sym")"
assert_equals \
"$(pwd)/${dir}/hello.txt" \
"$(get_real_path "${dir}/a/b/sym-not-normalized")"
cd "$dir"
local -r abs_dir=$(pwd)
assert_equals "${abs_dir}" "$(get_real_path "self")"
assert_equals "${abs_dir}" "$(get_real_path "./self")"
assert_equals "${abs_dir}/hello.txt" "$(get_real_path "a/sym")"
assert_equals "${abs_dir}/hello.txt" "$(get_real_path "a/b/sym")"
assert_equals \
"${abs_dir}/hello.txt" "$(get_real_path "a/b/sym-not-normalized")"
cd a
assert_equals "${abs_dir}" "$(get_real_path "../self")"
assert_equals "${abs_dir}/hello.txt" "$(get_real_path "sym")"
assert_equals "${abs_dir}/hello.txt" "$(get_real_path "./sym")"
assert_equals "${abs_dir}/hello.txt" "$(get_real_path "b/sym")"
assert_equals "${abs_dir}/hello.txt" "$(get_real_path "b/sym-not-normalized")"
cd b
assert_equals "${abs_dir}" "$(get_real_path "../../self")"
assert_equals "${abs_dir}/hello.txt" "$(get_real_path "../sym")"
assert_equals "${abs_dir}/hello.txt" "$(get_real_path "sym")"
assert_equals "${abs_dir}/hello.txt" "$(get_real_path "./sym")"
assert_equals "${abs_dir}/hello.txt" "$(get_real_path "sym-not-normalized")"
assert_fails_to get_real_path "non-existent"
ln -s self self
assert_fails_to get_real_path "self"
}
run_suite "Tests for Bash utilities"
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