squash spiffs: rename mtdi -> mtd

Author: Vincent Dupont

tests/unittests/tests-spiffs/Makefile.include

@@ -1,2 +1,2 @@
 USEMODULE += spiffs
-USEMODULE += mtdi_native
+USEMODULE += mtd_native

tests/unittests/tests-spiffs/tests-spiffs.c

@@ -22,11 +22,11 @@
 
 #include "tests-spiffs.h"
 
-MTD_NATIVE_DESC(_dev);
+MTD_NATIVE_DESC(_dev, "MEMORY.bin");
 
 static struct spiffs_desc spiffs_desc = {
     .lock = MUTEX_INIT,
-    .dev = &_dev,
+    .dev = (mtd_dev_t*) &_dev,
 };
 
 static vfs_mount_t _test_spiffs_mount = {
@@ -102,10 +102,10 @@ static void tests_spiffs_write(void)
 
 static void tests_spiffs_write2(void)
 {
-    char buf[1024];
+    char buf[256];
     /*char r_buf[sizeof(buf) + 2];*/
 
-    for (int i = 0; i < 1024; i++) {
+    for (int i = 0; i < 256; i++) {
         buf[i] = 'A' + (i % 30);
     }
 
@@ -117,7 +117,7 @@ static void tests_spiffs_write2(void)
         int fd = vfs_open("/test-spiffs/test.txt", O_CREAT | O_RDWR, 0);
         TEST_ASSERT(fd >= 0);
 
-        for  (int i = 0; i < 500; i++) {
+        for  (int i = 0; i < 2000; i++) {
             res = vfs_write(fd, buf, sizeof(buf));
             TEST_ASSERT_EQUAL_INT(sizeof(buf), res);
         }