[RFC PATCH 59/77] tests: metadata: Add a test for addon without root node

The root device-tree node is no more mandatory for addons.

Indeed, addons can be composed of only orphan nodes without any needs
for the root device-tree node presence.

Add a test related to addon dts and dtb without root node.

Signed-off-by: Herve Codina <[email protected]>
---
 tests/metadata_addon_orphan2.dtb.dts.expect | 10 ++++++++++
 tests/metadata_addon_orphan2.dtb.expect     |  8 ++++++++
 tests/metadata_addon_orphan2.dts            | 13 +++++++++++++
 tests/metadata_addon_orphan2.dts.dts.expect | 10 ++++++++++
 tests/run_tests.sh                          |  2 +-
 5 files changed, 42 insertions(+), 1 deletion(-)
 create mode 100644 tests/metadata_addon_orphan2.dtb.dts.expect
 create mode 100644 tests/metadata_addon_orphan2.dtb.expect
 create mode 100644 tests/metadata_addon_orphan2.dts
 create mode 100644 tests/metadata_addon_orphan2.dts.dts.expect

diff --git a/tests/metadata_addon_orphan2.dtb.dts.expect b/tests/metadata_addon_orphan2.dtb.dts.expect
new file mode 100644
index 0000000..32c1b1e
--- /dev/null
+++ b/tests/metadata_addon_orphan2.dtb.dts.expect
@@ -0,0 +1,10 @@
+/dts-v1/;
+/addon/;
+
+
+&base {
+
+	addon-node {
+		prop = <0x02>;
+	};
+};
diff --git a/tests/metadata_addon_orphan2.dtb.expect b/tests/metadata_addon_orphan2.dtb.expect
new file mode 100644
index 0000000..46e67d0
--- /dev/null
+++ b/tests/metadata_addon_orphan2.dtb.expect
@@ -0,0 +1,8 @@
+/dts-v1/;
+/addon/;
+
+&base {
+    addon-node {
+        prop = <0x00000002>;
+    };
+};
diff --git a/tests/metadata_addon_orphan2.dts b/tests/metadata_addon_orphan2.dts
new file mode 100644
index 0000000..d4ff42f
--- /dev/null
+++ b/tests/metadata_addon_orphan2.dts
@@ -0,0 +1,13 @@
+// SPDX-License-Identifier: (GPL-2.0-or-later OR BSD-2-Clause)
+/*
+ * Copyright (C) 2026 Bootlin
+ */
+
+/dts-v1/;
+/addon/;
+
+&base {
+	addon-node {
+		prop = <2>;
+	};
+};
diff --git a/tests/metadata_addon_orphan2.dts.dts.expect b/tests/metadata_addon_orphan2.dts.dts.expect
new file mode 100644
index 0000000..32c1b1e
--- /dev/null
+++ b/tests/metadata_addon_orphan2.dts.dts.expect
@@ -0,0 +1,10 @@
+/dts-v1/;
+/addon/;
+
+
+&base {
+
+	addon-node {
+		prop = <0x02>;
+	};
+};
diff --git a/tests/run_tests.sh b/tests/run_tests.sh
index 659b42b..5edc58b 100755
--- a/tests/run_tests.sh
+++ b/tests/run_tests.sh
@@ -1128,7 +1128,7 @@ metadata_tests() {
 	for dt in metadata_reflocal metadata_refphandle \
 		  metadata_addon_base metadata_exportsyms_local \
 		  metadata_exportsyms_ref metadata_importsyms \
-		  metadata_addon_orphan1; do
+		  metadata_addon_orphan1 metadata_addon_orphan2; do
 		run_dtc_test -I dts -O dts -o $dt.dts.dts "$SRCDIR/$dt.dts"
 		base_run_test check_diff $dt.dts.dts "$SRCDIR/$dt.dts.dts.expect"
 		run_dtc_test -I dts -O dtb -o $dt.dtb "$SRCDIR/$dt.dts"
-- 
2.52.0