binman: Test replacing non-section entries in FIT subsections

A previous patch fixes binman to correctly extract FIT subentries. This
makes it easier to test replacing these entries as we can write tests
using an existing helper function that relies on extracting the replaced
entry.

Add tests that replace leaf entries in FIT subsections with data of
various sizes. Replacing the subsections or the whole FIT section does
not work yet due to the section contents being re-built from unreplaced
subentries' data.

Signed-off-by: Alper Nebi Yasak <alpernebiyasak@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

1 files changed, 38 insertions, 0 deletions

diff --git a/tools/binman/ftest.py b/tools/binman/ftest.py
index 3fe5753..421754b 100644
--- a/tools/binman/ftest.py
+++ b/tools/binman/ftest.py
@@ -5655,6 +5655,44 @@ fdt         fdtmap                Extract the devicetree blob from the fdtmap
             data = control.ReadEntry(image_fname, entry_path)
             self.assertEqual(expected, data)
 
+    def testReplaceFitSubentryLeafSameSize(self):
+        """Test replacing a FIT leaf subentry with same-size data"""
+        new_data = b'x' * len(U_BOOT_DATA)
+        data, expected_fdtmap, _ = self._RunReplaceCmd(
+            'fit/kernel/u-boot', new_data,
+            dts='233_fit_extract_replace.dts')
+        self.assertEqual(new_data, data)
+
+        path, fdtmap = state.GetFdtContents('fdtmap')
+        self.assertIsNotNone(path)
+        self.assertEqual(expected_fdtmap, fdtmap)
+
+    def testReplaceFitSubentryLeafBiggerSize(self):
+        """Test replacing a FIT leaf subentry with bigger-size data"""
+        new_data = b'ub' * len(U_BOOT_NODTB_DATA)
+        data, expected_fdtmap, _ = self._RunReplaceCmd(
+            'fit/fdt-1/u-boot-nodtb', new_data,
+            dts='233_fit_extract_replace.dts')
+        self.assertEqual(new_data, data)
+
+        # Will be repacked, so fdtmap must change
+        path, fdtmap = state.GetFdtContents('fdtmap')
+        self.assertIsNotNone(path)
+        self.assertNotEqual(expected_fdtmap, fdtmap)
+
+    def testReplaceFitSubentryLeafSmallerSize(self):
+        """Test replacing a FIT leaf subentry with smaller-size data"""
+        new_data = b'x'
+        expected = new_data.ljust(len(U_BOOT_NODTB_DATA), b'\0')
+        data, expected_fdtmap, _ = self._RunReplaceCmd(
+            'fit/fdt-1/u-boot-nodtb', new_data,
+            dts='233_fit_extract_replace.dts')
+        self.assertEqual(expected, data)
+
+        path, fdtmap = state.GetFdtContents('fdtmap')
+        self.assertIsNotNone(path)
+        self.assertEqual(expected_fdtmap, fdtmap)
+
 
 if __name__ == "__main__":
     unittest.main()