binman: Add a test for an inner section with a size

This is a slightly different scenario from the existing testSections
tests. Add a new test for it.

Signed-off-by: Simon Glass <sjg@chromium.org>

tools/binman/ftest.py

@@ -6188,6 +6188,12 @@ fdt         fdtmap                Extract the devicetree blob from the fdtmap
             err,
             "Image '.*' is missing external blobs but is still functional: missing")
 
+    def testSectionInner(self):
+        """Test an inner section with a size"""
+        data = self._DoReadFile('267_section_inner.dts')
+        expected = U_BOOT_DATA + tools.get_bytes(0, 12)
+        self.assertEqual(expected, data)
+
 
 if __name__ == "__main__":
     unittest.main()

tools/binman/test/267_section_inner.dts

@@ -0,0 +1,16 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+/dts-v1/;
+
+/ {
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	binman {
+		section {
+			size = <0x10>;
+			u-boot {
+			};
+		};
+	};
+};