From bea9d62bdb499b7b2a49a478cac51d46416808d4 Mon Sep 17 00:00:00 2001
From: Frantisek Sumsal <frantisek@sumsal.cz>
Date: Fri, 19 Aug 2022 16:30:24 +0200
Subject: [PATCH] test: correctly process multiline strings in $KERNEL_APPEND

Some tests (like TEST-02) set a multiline string to $KERNEL_APPEND
(which is a valid thing to do), unfortunately we'd use only the first
line of it and throw the rest away, e.g:

```
$ printf "%s" "$x"
hello

this is a multiline

kernel command line
$ read -ra out <<< "$x"
$ printf "%s" "${out[@]}"
hello
```

Let's use readarray/mapfile instead to avoid this:

```
$ readarray out <<< "$x"
$ printf "%s" "${out[@]}"
hello

this is a multiline

kernel command line

```
---
 test/test-functions | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/test/test-functions b/test/test-functions
index 5dec5e28dec..3cdfd800f08 100644
--- a/test/test-functions
+++ b/test/test-functions
@@ -498,7 +498,7 @@ run_qemu() {
 
     if [[ -n "${KERNEL_APPEND:=}" ]]; then
         local user_kernel_append
-        read -ra user_kernel_append <<< "$KERNEL_APPEND"
+        readarray user_kernel_append <<< "$KERNEL_APPEND"
         kernel_params+=("${user_kernel_append[@]}")
     fi
 
@@ -557,7 +557,7 @@ run_nspawn() {
 
     if [[ -n "${KERNEL_APPEND:=}" ]]; then
         local user_kernel_append
-        read -ra user_kernel_append <<< "$KERNEL_APPEND"
+        readarray user_kernel_append <<< "$KERNEL_APPEND"
         kernel_params+=("${user_kernel_append[@]}")
     fi