From 4c2d751df9db11e8ea14dc60bf936a8aa56227f7 Mon Sep 17 00:00:00 2001
From: Povilas Kanapickas <povilas@radix.lt>
Date: Sat, 5 Feb 2022 18:53:38 +0200
Subject: common: Detect invalid usage of XITProperty

---
 tests/common/xit-property.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/tests/common/xit-property.h b/tests/common/xit-property.h
index b0d2818..f0d8856 100644
--- a/tests/common/xit-property.h
+++ b/tests/common/xit-property.h
@@ -101,6 +101,12 @@ XITProperty<DataType>::XITProperty(::Display *dpy, int deviceid, const std::stri
     XIGetProperty(dpy, deviceid, prop, 0, 1000, False,
                   AnyPropertyType, &type, &format, &nitems, &bytes_after, &d);
 
+    if (format != sizeof(DataType) * 8) {
+        ADD_FAILURE() << "Property " << propname << " has different number of bits on server: "
+                      << format << " expected: " << sizeof(DataType) * 8;
+        return;
+    }
+
     if (!d)
         return;
 
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