esp-idf/tools/unit-test-app/partition_table_unit_test_app.csv

# Special partition table for unit test app
#
# Name,     Type, SubType, Offset,   Size, Flags
# Note: if you change the phy_init or app partition offset, make sure to change the offset in Kconfig.projbuild
nvs,        data, nvs,     0x9000,  0x4000
otadata,    data, ota,     0xd000,  0x2000
phy_init,   data, phy,     0xf000,  0x1000
factory,    0,    0,       0x10000, 1M
# these OTA partitions are used for tests, but can't fit real OTA apps in them
# (done this way so tests can run in 2MB of flash.)
ota_0,      0,    ota_0,   ,        128K
ota_1,      0,    ota_1,   ,        128K
# flash_test partition used for SPI flash tests
flash_test, 0x55, 0x55,  ,        512K