tests-integration-fs: makes tests independent

Cleans up the created files between test cases to avoid out of space
situations.

TESTS/integration/fs-threaded/main.cpp

@@ -22,13 +22,12 @@
 */
 
 #if !INTEGRATION_TESTS
-#error [NOT_SUPPORTED] integration tests not enabled for this target
+#error [NOT_SUPPORTED] integration tests not enabled
 #elif !MBED_CONF_RTOS_PRESENT
 #error [NOT_SUPPORTED] integration tests require RTOS
-#else
+#endif
 
 #include "mbed.h"
-#include "FATFileSystem.h"
 #include "LittleFileSystem.h"
 #include "utest/utest.h"
 #include "unity/unity.h"
@@ -59,38 +58,38 @@ void led_thread()
 #endif
 
 BlockDevice *bd = BlockDevice::get_default_instance();
-SlicingBlockDevice sd(bd, 0, MBED_CONF_APP_TESTS_FS_SIZE);
-#if TEST_USE_FILESYSTEM == FS_FAT
-FATFileSystem fs("sd");
-#else
+SlicingBlockDevice sbd(bd, 0, MBED_CONF_APP_TESTS_FS_SIZE);
 LittleFileSystem fs("sd");
-#endif
 
-static control_t test_format(const size_t call_count)
-{
-    int format_err = fs.format(&sd);
-    TEST_ASSERT_EQUAL_INT_MESSAGE(0, format_err, "could not format block device");
-
-    int mount_err = fs.mount(&sd);
-    TEST_ASSERT_EQUAL_INT_MESSAGE(0, mount_err, "could not mount block device");
-
-    return CaseNext;
-}
+constexpr char fname_prefix[] = "mbed-file-test-";
+constexpr char fname_postfix[] = ".txt";
 
 static uint32_t thread_counter = 0;
 
+void print_memory_info()
+{
+#if defined MBED_HEAP_STATS_ENABLED &&  MBED_MEM_TRACING_ENABLED
+    // Grab the heap statistics
+    mbed_stats_heap_t heap_stats;
+    mbed_stats_heap_get(&heap_stats);
+    printf("Heap size: %lu / %lu bytes\r\n",
+           heap_stats.current_size,
+           heap_stats.reserved_size);
+#endif
+}
+
 void file_fn(size_t *block_size)
 {
     uint32_t thread_id = core_util_atomic_incr_u32(&thread_counter, 1);
     char filename[255] = { 0 };
-    snprintf(filename, 255, "mbed-file-test-%" PRIu32 ".txt", thread_id);
+    snprintf(filename, 255, "%s%" PRIu32 "%s", fname_prefix, thread_id, fname_postfix);
     file_test_write(filename, 0, story, sizeof(story), *block_size);
     file_test_read(filename, 0, story, sizeof(story), *block_size);
+    print_memory_info();
 }
 
 static control_t file_2_threads(const size_t call_count)
 {
-    thread_counter = 0;
     size_t block_size1 = 4;
     size_t block_size2 = 256;
 
@@ -104,39 +103,88 @@ static control_t file_2_threads(const size_t call_count)
     return CaseNext;
 }
 
-static control_t file_3_threads(const size_t call_count)
+static control_t file_4_threads(const size_t call_count)
 {
-    thread_counter = 0;
-    size_t block_size1 = 256;
-    size_t block_size2 = 1024;
-    size_t block_size3 = 4096;
+    size_t block_size1 = 4;
+    size_t block_size2 = 256;
+    size_t block_size3 = 1024;
+    size_t block_size4 = 4096;
 
     Thread t1;
     Thread t2;
     Thread t3;
+    Thread t4;
     t1.start(callback(file_fn, &block_size1));
     t2.start(callback(file_fn, &block_size2));
     t3.start(callback(file_fn, &block_size3));
+    t4.start(callback(file_fn, &block_size4));
     t1.join();
     t2.join();
     t3.join();
+    t4.join();
 
     return CaseNext;
 }
 
-utest::v1::status_t greentea_setup(const size_t number_of_cases)
+utest::v1::status_t test_setup_handler(const size_t number_of_cases)
 {
     GREENTEA_SETUP(10 * 60, "default_auto");
+
+    /* Format only once per each test run */
+    int format_err = fs.format(&sbd);
+    TEST_ASSERT_EQUAL_INT_MESSAGE(0, format_err, "could not format block device");
+
+    int mount_err = fs.mount(&sbd);
+    TEST_ASSERT_EQUAL_INT_MESSAGE(0, mount_err, "could not mount block device");
+
     return greentea_test_setup_handler(number_of_cases);
 }
 
+void test_teardown_handler(const size_t passed, const size_t failed, const failure_t failure)
+{
+    int mount_err = fs.unmount();
+    TEST_ASSERT_EQUAL_INT_MESSAGE(0, mount_err, "could not unmount block device");
+
+    greentea_test_teardown_handler(passed, failed, failure);
+}
+
+utest::v1::status_t case_setup_handler(const Case *const source, const size_t index_of_case)
+{
+    thread_counter = 0;
+
+    return greentea_case_setup_handler(source, index_of_case);
+}
+
+utest::v1::status_t case_teardown_handler(const Case *const source,
+                                          const size_t passed,
+                                          const size_t failed,
+                                          const failure_t reason)
+{
+    char filename[255] = { 0 };
+
+    for (uint32_t idx = 1; idx <= thread_counter; idx++) {
+        snprintf(filename, 255, "%s%" PRIu32 "%s", fname_prefix, idx, fname_postfix);
+        int removal_err = fs.remove(filename);
+        TEST_ASSERT_EQUAL_INT_MESSAGE(0, removal_err, "could not remove file");
+    }
+
+    return greentea_case_teardown_handler(source, passed, failed, reason);
+}
+
+
+
 Case cases[] = {
-    Case(TEST_BLOCK_DEVICE_TYPE "+" TEST_FILESYSTEM_TYPE " format", test_format),
-    Case(TEST_BLOCK_DEVICE_TYPE "+" TEST_FILESYSTEM_TYPE " 2 files, buff 4b/256b", file_2_threads),
-    Case(TEST_BLOCK_DEVICE_TYPE "+" TEST_FILESYSTEM_TYPE " 3 files, buff 256b/1kb/4kb", file_3_threads),
+                Case(TEST_BLOCK_DEVICE_TYPE "+" TEST_FILESYSTEM_TYPE " 2 files, block size 4B/256B",
+                     case_setup_handler,
+                     file_2_threads,
+                     case_teardown_handler),
+                Case(TEST_BLOCK_DEVICE_TYPE "+" TEST_FILESYSTEM_TYPE " 4 files, block size 4B/256B/1KiB/4KiB",
+                     case_setup_handler,
+                     file_4_threads,
+                     case_teardown_handler),
 };
 
-Specification specification(greentea_setup, cases);
+Specification specification(test_setup_handler, cases, test_teardown_handler);
 
 int main()
 {
@@ -148,4 +196,3 @@ int main()
 
     return !Harness::run(specification);
 }
-#endif // !INTEGRATION_TESTS