testsuite: ztest: Add zassert_within macro

Added macro to test value against another value with accepted delta. Signed-off-by: Krzysztof Chruscinski <[email protected]>
dagar · May 8, 2019 · 7a2d025 · 7a2d025
1 parent 44739f4
commit 7a2d025
Showing 1 changed file with 13 additions and 0 deletions.
diff --git a/subsys/testsuite/ztest/include/ztest_assert.h b/subsys/testsuite/ztest/include/ztest_assert.h
@@ -168,6 +168,19 @@ static inline void z_zassert(int cond,
 	zassert((void *)(a) == (void *)(b), #a " not equal to  " #b, \
 		msg, ##__VA_ARGS__)
 
+/**
+ * @brief Assert that @a a is within @a b with delta @a d
+ *
+ * @param a Value to compare
+ * @param b Value to compare
+ * @param d Delta
+ * @param msg Optional message to print if the assertion fails
+ */
+#define zassert_within(a, b, d, msg, ...)			     \
+	zassert(((a) > ((b) - (d))) && ((a) < ((b) + (d))),	     \
+		#a " not within " #b " +/- " #d,		     \
+		msg, ##__VA_ARGS__)
+
 /**
  * @brief Assert that 2 memory buffers have the same contents
  *