refactor(esp_ringbuf): Adjusted unit tests so some of them run on Linux

components/esp_ringbuf/test_apps/main/test_functions.h

@@ -0,0 +1,53 @@
+/*
+ * SPDX-FileCopyrightText: 2024 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include "freertos/ringbuf.h"
+
+//Definitions used in multiple test cases
+#define NO_OF_RB_TYPES              3
+#define SMALL_ITEM_SIZE             8
+#define ITEM_HDR_SIZE               (sizeof(size_t) + sizeof(UBaseType_t))
+#define MEDIUM_ITEM_SIZE            ((3 * SMALL_ITEM_SIZE) >> 1)  //12 bytes
+#define BUFFER_SIZE                 4 * (ITEM_HDR_SIZE + MEDIUM_ITEM_SIZE)     //4Byte aligned size
+
+#define CONT_DATA_LEN                   continuous_test_string_len()
+//32-bit aligned size that guarantees a wrap around at some point
+#define CONT_DATA_TEST_BUFF_LEN         (((CONT_DATA_LEN/2) + 0x03) & ~0x3)
+
+typedef struct {
+    RingbufHandle_t buffer;
+    RingbufferType_t type;
+} task_args_t;
+
+extern const uint8_t small_item[SMALL_ITEM_SIZE];
+extern RingbufHandle_t buffer_handles[NO_OF_RB_TYPES];
+extern SemaphoreHandle_t done_sem;
+
+extern SemaphoreHandle_t tasks_done;
+extern SemaphoreHandle_t tx_done;
+extern SemaphoreHandle_t rx_done;
+
+void setup(void);
+
+void cleanup(void);
+
+void read_from_buffer(RingbufHandle_t buffer, RingbufferType_t buf_type, size_t max_rec_size);
+
+void send_to_buffer(RingbufHandle_t buffer, size_t max_item_size);
+
+void send_item_and_check(RingbufHandle_t handle, const uint8_t *item,  size_t item_size, TickType_t ticks_to_wait, bool in_isr);
+
+void receive_check_and_return_item_no_split(RingbufHandle_t handle, const uint8_t *expected_data, size_t expected_size, TickType_t ticks_to_wait, bool in_isr);
+
+void receive_check_and_return_item_allow_split(RingbufHandle_t handle, const uint8_t *expected_data, size_t expected_size, TickType_t ticks_to_wait, bool in_isr);
+
+void receive_check_and_return_item_byte_buffer(RingbufHandle_t handle, const uint8_t *expected_data, size_t expected_size, TickType_t ticks_to_wait, bool in_isr);
+
+void send_task(void *args);
+
+void rec_task(void *args);
+
+size_t continuous_test_string_len(void);