ISTQB CT-AuT case studies

ISTQB CT-AuT · Put your knowledge to work in context.

The ISTQB® Certified Tester Automotive Software Tester (CT-AuT) is a specialist-level qualification in the ISTQB® portfolio. As ISTQB® describes it, the certification "focuses on the specific requirements for 'testing E/E systems' in the automotive environment on the basis of established standards (Automotive SPICE®, ISO 26262, AUTOSAR®, etc.)" and "also covers testing in virtual environments (including XiL), and automotive-specific static and dynamic test techniques." That scope makes it relevant to testers, test analysts, test engineers and test managers working on electronic/electrical (E/E) systems in vehicle development, and to professionals moving from general software testing into the automotive domain. The ISTQB CT-AuT case studies are 5 cases and about 3,683 words.

Code generator at TCL2 and a cosmetic traceability claim

You are the test manager at a Tier-1 supplier for a lane-keep assist ECU rated ASIL B. The customer requires Automotive SPICE® Capability Level 2 at the upcoming assessment in six weeks.

731 words, about 4 min 2

MiL, SiL and HiL disagree on abort latency

You are validating an automated-parking function on three rigs: MiL with a bicycle-model plant at a 1 ms step size, SiL running the production binaries on a PC cluster with a stubbed ultrasonic sensor driver, and HiL with 12 ultrasonic sensors emulated on the CAN/CAN-FD bus at a 10 ms cycle. The park-abort function passes in MiL and SiL, but fails on HiL in 3 of 40 runs when the lateral gap narrows from 30 cm to 25 cm; measured abort latency is 160 ms against a specified 100 ms.

752 words, about 4 min 3

Bulk approval of MISRA deviations in ASIL B code

A body-control-module code base of 480 kLOC C is checked against MISRA C:2012 plus 40 project rules. The nightly analysis reports 9,400 violations; triage leaves 1,200 formally recorded deviations, 380 of them in ASIL B functions.

761 words, about 4 min 4

Anti-pinch function: 24 passing tests and a missing transition

You are testing an anti-pinch window-lift ECU (ASIL A). The requirement states that on obstacle detection during closing, the motor must reverse within 100 ms and the reversal force must not exceed 100 N.

729 words, about 4 min 5

Late change on an ASIL D torque path and the confirmation measures

Five months before SOP, the ASIL D steering-torque path in an EPS ECU changes: a filter coefficient is altered and one plausibility check moves from the 10 ms task to the 5 ms task. The change is made under a change request, is unit-tested (statement coverage 100 % on the touched units), and integration tests pass.

710 words, about 4 min