8.5.17 Risks and Contingencies
Identify the high-risk assumptions of the test plan. Specify contingency plans for each (for example,
delayed delivery of test items might require increased night shift scheduling to meet the delivery date).
FIGURE 8.11 A HOOD diagram for a raster display controller
ADA_RTS
START
INITIALISE
GET_ENTRY
PUT_ENTRY
LAT_LONG
LOAD_STORE
CLEAR_STORE
SAVE_STORE
KEY_ENTRY_
HANDLER
CLOCK_INTERR
_START
A
KEY_BUFFER
SET_FREQU
START
TIMER
BUS_DRIVER
READ_KEY
PUT_ASCII_LO
PUT_ASCII_UP
A
DISPLAY
UPDATE_LOWER
UPDATE_UPPER
INIT_LOWER
INIT_UPPER
UPDATE_MESSAGE
UPDATE FAILED
A
RASTER_DISPLAY_CONTROLLER
A STORE
A LHCK_MONITOR
ADD
GET
Test Documents 141
FIGURE 8.12 An integration tree
CALLING_DRIVER
KEY_BUFFER_STUB
CALLING_DRIVER
KEY_BUFFER_STUB
CALLING_DRIVER CALLING_DRIVER CALLING_DRIVER CALLING_DRIVER
KEY_BUFFER_STUB KEY_BUFFER
UPDATE_LOWER
UPDATE_UPPER
UPDATE_MASSAGE
UPDATE_FAILED
STORE_STUB
LHCK_MONITOR_STUB
KEY_ENTRY_HANDLER_STUB
ADA_RTS ADA_RTS
STORE AND
KEY_ENTRY_HANDLER
STEP
LHCK_MONITOR
STEP
KEY_BUFFER
STEP
RASTER_DISPLAY_
CONTROLLER STEP
INITIALISE
SAVE_STORE
LOAD_STORE
LAT_LONG
PUT_ENTRY
GET_ENTRY
DISPLAY DISPLAY
STORE
START
LHCK_MONITOR LHCK_MONITOR
KEY_ENTRY_HANDLER KEY_ENTRY_HANDLER KEY_ENTRY_HANDLER
ADA_RTS ADA_RTS ADA_RTS ADA_RTS
CLOCK_INTERR
STORE STORE
RASTER_DISPLAY_
CONTROLLER
DISPLAY
ADD
GET
DISPLAY
CLEAR_STORE
LHCK_MONITOR_STUB
DISPLAY STEP
INIT_LOWER
INIT_UPPER
142 Manage Software Testing
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