CTFL_Syll_4.0 Exam Dumps : ISTQB Certified Tester Foundation Level (CTFL) v4.0

The statement that the shift-left approach can only be implemented with test automation is false. The shift-left approach emphasizes early testing activities in the software development lifecycle to detect and address defects as soon as possible. While test automation can support shift-left practices, it is not the only method. The shift-left approach can also involve practices such as static analysis, early requirement reviews, and integrating security vulnerability assessments early in the development process.

In the given state transition diagram, we need to identify the minimum number of test cases required to cover every unique sequence of exactly 4 states/3 transitions starting and ending in the "Inactive" state.

The states are:

Inactive

Active

Alert Mode

Alarm bell rings

Inactive -> Active -> Inactive -> Active -> Inactive

Sequence: Press Button, Enter PIN, Press Button, Enter PIN

Inactive -> Active -> Alert Mode -> Inactive

Sequence: Press Button, Sensor Activated, Enter PIN

Inactive -> Active -> Alert Mode -> Alarm bell rings -> Inactive

Sequence: Press Button, Sensor Activated, Timeout expired, Press Button

Test Case Analysis:These sequences cover every unique combination of exactly 4 states and 3 transitions starting and ending in the "Inactive" state.

Statement coverage, also known as line coverage, is a metric used in white-box testing to measure the percentage of executable statements in the source code that have been executed by the test suite. Achieving a certain percentage of statement coverage means that an equivalent percentage of the executable statements in the code have been executed during testing.

For example, achieving 80% statement coverage indicates that 80% of the lines of code have been run through during the testing process. This metric helps in identifying parts of the code that have not been tested and may contain undetected defects.

It's important to note that achieving high statement coverage does not necessarily guarantee that all possible paths or scenarios within the code are tested, nor does it ensure the detection of all types of defects. Other coverage metrics, such as branch coverage or condition coverage, might also be necessary to achieve a more thorough testing process.