Add 'corebinutils/pwait/' from commit '2dea7718929906912270d2d02cc19fbbf2848579'

git-subtree-dir: corebinutils/pwait
git-subtree-mainline: 76166d4f612e1318ffe99493f9d8b578887b1278
git-subtree-split: 2dea7718929906912270d2d02cc19fbbf2848579

1 files changed, 149 insertions, 0 deletions

diff --git a/corebinutils/pwait/tests/test.sh b/corebinutils/pwait/tests/test.sh
new file mode 100644
index 0000000000..745a50f4ef
--- /dev/null
+++ b/corebinutils/pwait/tests/test.sh
@@ -0,0 +1,149 @@
+#!/bin/sh
+
+# tests/test.sh for pwait Linux port
+
+set -eu
+
+# Fallbacks for paths
+CC="${CC:-cc}"
+PWAIT_BIN="${PWAIT_BIN:-$(pwd)/out/pwait}"
+
+fail() {
+	echo "FAIL: $*" >&2
+	exit 1
+}
+
+assert_exit_code() {
+	local expected=$1
+	shift
+	local cmd="$@"
+	set +e
+	eval "$cmd" > /tmp/pwait_test.out 2> /tmp/pwait_test.err
+	local st=$?
+	set -e
+	if [ "$st" != "$expected" ]; then
+		echo "Expected exit code $expected, got $st for: $cmd" >&2
+		cat /tmp/pwait_test.out >&2
+		cat /tmp/pwait_test.err >&2
+		fail "exit code assertion failed"
+	fi
+}
+
+assert_stdout() {
+	local expected_str="$1"
+	shift
+	local cmd="$@"
+	set +e
+	eval "$cmd" > /tmp/pwait_test.out 2> /tmp/pwait_test.err
+	local st=$?
+	set -e
+	local out=$(cat /tmp/pwait_test.out)
+	if ! echo "$out" | grep -qF "$expected_str"; then
+		echo "Expected stdout to contain '$expected_str' for: $cmd" >&2
+		echo "Got stdout:" >&2
+		cat /tmp/pwait_test.out >&2
+		fail "stdout assertion failed"
+	fi
+}
+
+assert_stderr() {
+	local expected_str="$1"
+	shift
+	local cmd="$@"
+	set +e
+	eval "$cmd" > /tmp/pwait_test.out 2> /tmp/pwait_test.err
+	local st=$?
+	set -e
+	local err=$(cat /tmp/pwait_test.err)
+	if ! echo "$err" | grep -qF "$expected_str"; then
+		echo "Expected stderr to contain '$expected_str' for: $cmd" >&2
+		echo "Got stderr:" >&2
+		cat /tmp/pwait_test.err >&2
+		fail "stderr assertion failed"
+	fi
+}
+
+echo "=== Basic tests ==="
+sleep 1 &
+p1=$!
+sleep 3 &
+p3=$!
+
+assert_exit_code 0 timeout 10 "$PWAIT_BIN" $p1 $p3
+
+echo "=== Timeout tests ==="
+sleep 10 &
+p10=$!
+
+assert_exit_code 124 timeout 15 "$PWAIT_BIN" -t 1 $p10
+assert_exit_code 0 timeout 15 "$PWAIT_BIN" -t 12 $p10
+
+kill $p10 2>/dev/null || true
+wait $p10 2>/dev/null || true
+
+echo "=== OR (-o) tests ==="
+sleep 1 &
+p1=$!
+sleep 10 &
+p10=$!
+assert_exit_code 0 timeout 4 "$PWAIT_BIN" -o $p1 $p10
+# $p10 might still be running
+kill $p10 2>/dev/null || true
+
+echo "=== Missing PID tests ==="
+# Give an invalid process ID, should err and consider it done
+assert_stderr "999999" timeout 2 "$PWAIT_BIN" 999999
+assert_exit_code 0 timeout 2 "$PWAIT_BIN" 999999
+
+echo "=== -p (print remaining) tests ==="
+sleep 1 &
+p1=$!
+sleep 10 &
+p10=$!
+# Wait for 3 sec, p1 finishes, p10 remains
+assert_stdout "$p10" timeout 5 "$PWAIT_BIN" -t 3 -p $p1 $p10
+kill $p10 2>/dev/null || true
+
+echo "=== -v (verbose exit) tests ==="
+sleep 1 &
+p1=$!
+# It's a child process because we started it from our shell script. However, pwait doesn't own it.
+# So pwait will print `terminated.` instead of exact exit code.
+assert_stdout "$p1: terminated" timeout 3 "$PWAIT_BIN" -v $p1
+
+echo "=== ENOSYS (Mock failure) test ==="
+# We can't easily mock ENOSYS for pidfd_open from shell.
+# We'll skip it in automated tests for now unless we LD_PRELOAD.
+
+echo "=== timeout=0 test ==="
+sleep 2 &
+p2=$!
+assert_exit_code 124 timeout 2 "$PWAIT_BIN" -t 0 $p2
+kill $p2 2>/dev/null || true
+
+echo "=== Duplicate PID test ==="
+sleep 1 &
+p1=$!
+# wait for duplicate PID, should just wait normally once
+assert_exit_code 0 timeout 4 "$PWAIT_BIN" $p1 $p1
+
+echo "=== Killed by signal test ==="
+sleep 10 &
+p10=$!
+# We don't trace child signals for unrelated procs,
+# but we can check if pwait returns successfully when the target dies from a signal.
+kill -9 $p10 2>/dev/null || true
+assert_exit_code 0 timeout 2 "$PWAIT_BIN" $p10
+
+echo "=== Mixed valid/invalid test ==="
+sleep 1 &
+p1=$!
+sleep 10 &
+# 999999 invalid
+assert_stderr "bad process id" timeout 2 "$PWAIT_BIN" abc xyz || true
+assert_stderr "999999" timeout 2 "$PWAIT_BIN" 999999 $p1
+# wait should still succeed as soon as valid process exits
+assert_exit_code 0 timeout 4 "$PWAIT_BIN" 999999 $p1
+
+echo "ALL TESTS PASSED."
+exit 0