tests: kernel: Add unit test for sys_get_be64()

Make sure sys_get_be64() works as expected.

Signed-off-by: Jukka Rissanen <[email protected]>

Author: jukkar

tests/kernel/common/src/byteorder.c

@@ -66,6 +66,26 @@ void test_byteorder_mem_swap(void)
 	zassert_true((memcmp(buf_orig_2, buf_chk_2, 11) == 0),
 		     "Swapping buffer failed");
 }
+
+/**
+ * @brief Test sys_get_be64() functionality
+ *
+ * @details Test if sys_get_be64() correctly handles endianness.
+ *
+ * @see sys_get_be64()
+ */
+void test_sys_get_be64(void)
+{
+	u64_t val = 0xf0e1d2c3b4a59687, tmp;
+	u8_t buf[] = {
+		0xf0, 0xe1, 0xd2, 0xc3, 0xb4, 0xa5, 0x96, 0x87
+	};
+
+	tmp = sys_get_be64(buf);
+
+	zassert_equal(tmp, val, "sys_get_be64() failed");
+}
+
 /**
  * @}
  */

tests/kernel/common/src/main.c

@@ -12,6 +12,7 @@
 
 extern void test_byteorder_memcpy_swap(void);
 extern void test_byteorder_mem_swap(void);
+extern void test_sys_get_be64(void);
 extern void test_atomic(void);
 extern void test_intmath(void);
 extern void test_printk(void);
@@ -95,6 +96,7 @@ void test_main(void)
 			 ztest_unit_test(test_irq_offload),
 			 ztest_unit_test(test_byteorder_memcpy_swap),
 			 ztest_unit_test(test_byteorder_mem_swap),
+			 ztest_unit_test(test_sys_get_be64),
 			 ztest_user_unit_test(test_atomic),
 			 ztest_unit_test(test_bitfield),
 			 ztest_unit_test(test_printk),