System Testing for C
The multiple-condition statement CASE comprises the keywords CASE, WHEN, END, OTHERS and the arrow symbol =>.
CASE instructions follow these rules:
The test following the keyword CASE must be a C or C++ Boolean expression. The keyword WHEN must be followed by an integer constant.
The keyword OTHERS indicates the default branch for the CASE instruction. This branch is optional.
CASE instructions can be located in scenarios, procedures, or environment blocks.
Example
HEADER "Instruction CASE", "", ""
...
MESSAGE message_t: response
SCENARIO One
...
CALL mbx_send_message(&id,&message) @ err_ok
DEF_MESSAGE response, EV={}
WAITTIL(MATCHING(response),WTIME == 10)
-- Checking the just received event type
CASE (response.type)
WHEN ACK =>
CALL mbx_send_message(&id,&message) @ err_ok
WHEN DATA =>
CALL mbx_send_message(&id,&ack) @ err_ok
WHEN NEG_ACK =>
CALL mbx_send_message(&id,&error) @ err_ok
WHEN OTHERS => ERROR
END CASE
END SCENARIO
Related Topics
Conditions | Iterations | System Testing language reference | CASE