test: Add ut_assertnull macro

Add ut_assertnull macro to include/test/ut.h
For testing of functions that returns NULL on errors.

Signed-off-by: Ramon Fried <ramon.fried@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

diff --git a/include/test/ut.h b/include/test/ut.h
index 59b23a25a4de35d3c173d461bd7c7719b83b4f6f..fce75fd12a0d970b199b4fd8186e09211aa7ed40 100644 (file)
--- a/include/test/ut.h
+++ b/include/test/ut.h
@@ -90,6 +90,18 @@ void ut_failf(struct unit_test_state *uts, const char *fname, int line,
        }                                                               \
 }
 
+/* Assert that a pointer is NULL */
+#define ut_assertnull(expr) {                                  \
+       const void *val = (expr);                                       \
+                                                                       \
+       if (val != NULL) {                                              \
+               ut_failf(uts, __FILE__, __LINE__, __func__,             \
+                        #expr " != NULL",                              \
+                        "Expected NULL, got %p", val);         \
+               return CMD_RET_FAILURE;                                 \
+       }                                                               \
+}
+
 /* Assert that a pointer is not NULL */
 #define ut_assertnonnull(expr) {                                       \
        const void *val = (expr);                                       \