Support for addon dts (/addon/ keyword) and addon dtb (FDT_FLAG_ADDON
header flag) have been recently introduced.

Even if the FDT_FLAG_ADDON dtb flag itself has its own test already
available, add a basic addon test in the metadata 'dts->dts and
dts->dtb->dts' test patterns to check that addon dts/dtb are
handled correctly.

Signed-off-by: Herve Codina <herve.codina@bootlin.com>
---
 tests/metadata_addon_base.dtb.dts.expect | 10 ++++++++++
 tests/metadata_addon_base.dtb.expect     | 10 ++++++++++
 tests/metadata_addon_base.dts            | 14 ++++++++++++++
 tests/metadata_addon_base.dts.dts.expect | 10 ++++++++++
 tests/run_tests.sh                       |  3 ++-
 5 files changed, 46 insertions(+), 1 deletion(-)
 create mode 100644 tests/metadata_addon_base.dtb.dts.expect
 create mode 100644 tests/metadata_addon_base.dtb.expect
 create mode 100644 tests/metadata_addon_base.dts
 create mode 100644 tests/metadata_addon_base.dts.dts.expect

diff --git a/tests/metadata_addon_base.dtb.dts.expect b/tests/metadata_addon_base.dtb.dts.expect
new file mode 100644
index 0000000..739f9db
--- /dev/null
+++ b/tests/metadata_addon_base.dtb.dts.expect
@@ -0,0 +1,10 @@
+/dts-v1/;
+/addon/;
+
+/ {
+
+	node-a {
+		prop = <0x01>;
+		ref-base = <&base>;
+	};
+};
diff --git a/tests/metadata_addon_base.dtb.expect b/tests/metadata_addon_base.dtb.expect
new file mode 100644
index 0000000..6c2a89a
--- /dev/null
+++ b/tests/metadata_addon_base.dtb.expect
@@ -0,0 +1,10 @@
+/dts-v1/;
+/addon/;
+
+/ {
+    node-a {
+        prop = <0x00000001>;
+        ref-base = <0xffffffff>;
+        // [FDT_REF_PHANDLE] ref-base[0], ref = base
+    };
+};
diff --git a/tests/metadata_addon_base.dts b/tests/metadata_addon_base.dts
new file mode 100644
index 0000000..5e29cef
--- /dev/null
+++ b/tests/metadata_addon_base.dts
@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: (GPL-2.0-or-later OR BSD-2-Clause)
+/*
+ * Copyright (C) 2026 Bootlin
+ */
+
+/dts-v1/;
+/addon/;
+
+/ {
+	node-a {
+		prop = <1>;
+		ref-base = <&base>;
+	};
+};
diff --git a/tests/metadata_addon_base.dts.dts.expect b/tests/metadata_addon_base.dts.dts.expect
new file mode 100644
index 0000000..739f9db
--- /dev/null
+++ b/tests/metadata_addon_base.dts.dts.expect
@@ -0,0 +1,10 @@
+/dts-v1/;
+/addon/;
+
+/ {
+
+	node-a {
+		prop = <0x01>;
+		ref-base = <&base>;
+	};
+};
diff --git a/tests/run_tests.sh b/tests/run_tests.sh
index 688d81d..def1a7e 100755
--- a/tests/run_tests.sh
+++ b/tests/run_tests.sh
@@ -1125,7 +1125,8 @@ wrap_fdtdump () {
 }
 
 metadata_tests() {
-	for dt in metadata_reflocal metadata_refphandle; do
+	for dt in metadata_reflocal metadata_refphandle \
+		  metadata_addon_base; 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