esp-idf/components/driver/test_apps/spi/master/partition_table_esp32_flash.csv

# Special partition table for unit test app
#
# Name,     Type, SubType, Offset,   Size, Flags
# Note: if you have increased the bootloader size, make sure to update the offsets to avoid overlap
factory,    0,    0,        0x20000, 0x260000

# flash_test partition used for SPI flash tests, WL FAT tests, and SPIFFS tests
flash_test, data, fat,      ,        528K