test: add test about struct deserialization

Author: MrIndeciso

libdestruct/common/struct/struct.py

@@ -27,9 +27,4 @@ def from_bytes(cls: type[struct], data: bytes) -> struct_impl:
         """Create a struct from a serialized representation."""
         type_inflater = inflater(data)
 
-        result = type_inflater.inflate(cls, 0)
-
-        if result.size != len(data):
-            raise ValueError("The length of the serialized struct does not match the struct size.")
-
-        return result
+        return type_inflater.inflate(cls, 0)

test/scripts/basic_struct_test.py

@@ -265,3 +265,26 @@ class test8(struct):
 
         d.kill()
         d.terminate()
+
+    def test_struct_from_bytes(self):
+        class test_t(struct):
+            a: c_int
+            b: c_long
+            c: ptr = ptr_to_self()
+
+        memory = b""
+        memory += (1337).to_bytes(4, "little")
+        memory += (13371337).to_bytes(8, "little")
+        memory += (4 + 8 + 8).to_bytes(8, "little")
+        memory += (1234).to_bytes(4, "little")
+        memory += (12345678).to_bytes(8, "little")
+        memory += (0).to_bytes(8, "little")
+
+        test = test_t.from_bytes(memory)
+
+        assert test.a.value == 1337
+        assert test.b.value == 13371337
+        assert test.c.unwrap().a.value == 1234
+        assert test.c.unwrap().b.value == 12345678
+        assert test.address == 0x0
+        assert test.c.unwrap().address == (4 + 8 + 8)