Moved spiff test to a test case. Reset retries in test runner

tests/cases/05_spiffs.c

@@ -0,0 +1,50 @@
+#include "espressif/esp_common.h"
+#include "esp/uart.h"
+#include "esp/timer.h"
+#include "FreeRTOS.h"
+#include "task.h"
+#include "esp8266.h"
+#include <stdio.h>
+
+#include "esp_spiffs.h"
+#include "spiffs.h"
+
+#include "fs_test.h"
+
+#include "testcase.h"
+
+DEFINE_SOLO_TESTCASE(05_spiffs)
+
+static fs_time_t get_current_time()
+{
+     return timer_get_count(FRC2) / 5000;  // to get roughly 1ms resolution
+}
+
+static void test_task(void *pvParameters)
+{
+    esp_spiffs_init();
+    esp_spiffs_mount();
+    SPIFFS_unmount(&fs);  // FS must be unmounted before formating
+    if (SPIFFS_format(&fs) == SPIFFS_OK) {
+        printf("Format complete\n");
+    } else {
+        printf("Format failed\n");
+    }
+    esp_spiffs_mount();
+
+    TEST_ASSERT_TRUE_MESSAGE(fs_load_test_run(100), "Load test failed");
+
+    float write_rate, read_rate;
+    if (fs_speed_test_run(get_current_time, &write_rate, &read_rate)) {
+        printf("Read speed: %.0f bytes/s\n", read_rate * 1000); 
+        printf("Write speed: %.0f bytes/s\n", write_rate * 1000); 
+    } else {
+        TEST_FAIL();
+    }
+    TEST_PASS();
+}
+
+static void a_05_spiffs(void)
+{
+    xTaskCreate(test_task, (signed char *)"test_task", 1024, NULL, 2, NULL);
+}