[RFC PATCH 73/77] tests: fdtaddon: Add a basic test for addons using an orphan nodes

Orphan nodes are available in addons.

Add a test checking the application of an addon when orphan nodes are
involved.

Signed-off-by: Herve Codina <[email protected]>
---
 tests/fdtaddon_basics2-merged1.dtb.dts.expect | 35 +++++++++++++++++++
 tests/fdtaddon_basics2-merged1.dtb.expect     | 27 ++++++++++++++
 tests/fdtaddon_basics2-merged2.dtb.dts.expect | 35 +++++++++++++++++++
 tests/fdtaddon_basics2-merged2.dtb.expect     | 27 ++++++++++++++
 tests/fdtaddon_basics2.dtba.expect            |  9 +++++
 tests/fdtaddon_basics2.dtsa                   | 15 ++++++++
 tests/run_tests.sh                            |  2 +-
 7 files changed, 149 insertions(+), 1 deletion(-)
 create mode 100644 tests/fdtaddon_basics2-merged1.dtb.dts.expect
 create mode 100644 tests/fdtaddon_basics2-merged1.dtb.expect
 create mode 100644 tests/fdtaddon_basics2-merged2.dtb.dts.expect
 create mode 100644 tests/fdtaddon_basics2-merged2.dtb.expect
 create mode 100644 tests/fdtaddon_basics2.dtba.expect
 create mode 100644 tests/fdtaddon_basics2.dtsa

diff --git a/tests/fdtaddon_basics2-merged1.dtb.dts.expect b/tests/fdtaddon_basics2-merged1.dtb.dts.expect
new file mode 100644
index 0000000..927733c
--- /dev/null
+++ b/tests/fdtaddon_basics2-merged1.dtb.dts.expect
@@ -0,0 +1,35 @@
+/dts-v1/;
+
+/ {
+
+	base-node {
+
+		sub-node {
+			prop = <0x00>;
+			phandle = <0x02>;
+		};
+	};
+
+	somewhere {
+
+		node-a1 {
+			compatible = "abc,aaa";
+			phandle = <0x01>;
+
+			/export/ node_a: &{/somewhere/node-a1};
+			/export/ other: &{/base-node/sub-node};
+
+			addon-node {
+				prop = <0x00>;
+			};
+		};
+
+		node-a2 {
+			compatible = "abc,aaa";
+			phandle = <0x03>;
+
+			/export/ node_a: &{/somewhere/node-a2};
+			/export/ other: &{/base-node/sub-node};
+		};
+	};
+};
diff --git a/tests/fdtaddon_basics2-merged1.dtb.expect b/tests/fdtaddon_basics2-merged1.dtb.expect
new file mode 100644
index 0000000..bee1397
--- /dev/null
+++ b/tests/fdtaddon_basics2-merged1.dtb.expect
@@ -0,0 +1,27 @@
+/dts-v1/;
+
+/ {
+    base-node {
+        sub-node {
+            prop = <0x00000000>;
+            phandle = <0x00000002>;
+        };
+    };
+    somewhere {
+        node-a1 {
+            compatible = "abc,aaa";
+            phandle = <0x00000001>;
+            // [FDT_EXPORT_SYM] 'node_a' -> phandle 0x00000001
+            // [FDT_EXPORT_SYM] 'other' -> phandle 0x00000002
+            addon-node {
+                prop = <0x00000000>;
+            };
+        };
+        node-a2 {
+            compatible = "abc,aaa";
+            phandle = <0x00000003>;
+            // [FDT_EXPORT_SYM] 'node_a' -> phandle 0x00000003
+            // [FDT_EXPORT_SYM] 'other' -> phandle 0x00000002
+        };
+    };
+};
diff --git a/tests/fdtaddon_basics2-merged2.dtb.dts.expect b/tests/fdtaddon_basics2-merged2.dtb.dts.expect
new file mode 100644
index 0000000..d85567b
--- /dev/null
+++ b/tests/fdtaddon_basics2-merged2.dtb.dts.expect
@@ -0,0 +1,35 @@
+/dts-v1/;
+
+/ {
+
+	base-node {
+
+		sub-node {
+			prop = <0x00>;
+			phandle = <0x02>;
+		};
+	};
+
+	somewhere {
+
+		node-a1 {
+			compatible = "abc,aaa";
+			phandle = <0x01>;
+
+			/export/ node_a: &{/somewhere/node-a1};
+			/export/ other: &{/base-node/sub-node};
+		};
+
+		node-a2 {
+			compatible = "abc,aaa";
+			phandle = <0x03>;
+
+			/export/ node_a: &{/somewhere/node-a2};
+			/export/ other: &{/base-node/sub-node};
+
+			addon-node {
+				prop = <0x00>;
+			};
+		};
+	};
+};
diff --git a/tests/fdtaddon_basics2-merged2.dtb.expect b/tests/fdtaddon_basics2-merged2.dtb.expect
new file mode 100644
index 0000000..34a4b36
--- /dev/null
+++ b/tests/fdtaddon_basics2-merged2.dtb.expect
@@ -0,0 +1,27 @@
+/dts-v1/;
+
+/ {
+    base-node {
+        sub-node {
+            prop = <0x00000000>;
+            phandle = <0x00000002>;
+        };
+    };
+    somewhere {
+        node-a1 {
+            compatible = "abc,aaa";
+            phandle = <0x00000001>;
+            // [FDT_EXPORT_SYM] 'node_a' -> phandle 0x00000001
+            // [FDT_EXPORT_SYM] 'other' -> phandle 0x00000002
+        };
+        node-a2 {
+            compatible = "abc,aaa";
+            phandle = <0x00000003>;
+            // [FDT_EXPORT_SYM] 'node_a' -> phandle 0x00000003
+            // [FDT_EXPORT_SYM] 'other' -> phandle 0x00000002
+            addon-node {
+                prop = <0x00000000>;
+            };
+        };
+    };
+};
diff --git a/tests/fdtaddon_basics2.dtba.expect b/tests/fdtaddon_basics2.dtba.expect
new file mode 100644
index 0000000..ec1582e
--- /dev/null
+++ b/tests/fdtaddon_basics2.dtba.expect
@@ -0,0 +1,9 @@
+/dts-v1/;
+/addon/;
+
+// [FDT_IMPORT_SYM] 'node_a' (abc,aaa)
+&node_a {
+    addon-node {
+        prop = <0x00000000>;
+    };
+};
diff --git a/tests/fdtaddon_basics2.dtsa b/tests/fdtaddon_basics2.dtsa
new file mode 100644
index 0000000..0dc70af
--- /dev/null
+++ b/tests/fdtaddon_basics2.dtsa
@@ -0,0 +1,15 @@
+// SPDX-License-Identifier: (GPL-2.0-or-later OR BSD-2-Clause)
+/*
+ * Copyright (C) 2026 Bootlin
+ */
+
+/dts-v1/;
+/addon/;
+
+/import/ node_a: "abc,aaa";
+
+&node_a {
+	addon-node {
+		prop = <0>;
+	};
+};
diff --git a/tests/run_tests.sh b/tests/run_tests.sh
index 32c40cf..d62496c 100755
--- a/tests/run_tests.sh
+++ b/tests/run_tests.sh
@@ -1189,7 +1189,7 @@ fdtaddon_tests() {
 	run_dtc_test -I dts -O dtb -o fdtaddon_base.dtb "$SRCDIR/fdtaddon_base.dts"
 	check_dtb fdtaddon_base.dtb
 
-	for dt in fdtaddon_basics1; do
+	for dt in fdtaddon_basics1 fdtaddon_basics2; do
 		run_dtc_test -I dts -O dtb -o $dt.dtba "$SRCDIR/$dt.dtsa"
 		check_dtb $dt.dtba
 
-- 
2.52.0