Write any 4 tests cases for traffic signal.
Test Case 1: Red Light Duration
- Test
Case ID: TS001
- Test
Description: Verify that the Red light stays on for the correct duration.
- Test
Steps:
1. Start the
traffic signal system.
2. Observe
the Red light when it turns on.
3. Use a
timer to measure how long it stays on.
- Expected
Result: The Red light should stay on for the specified time (e.g., 60
seconds).
- Pass/Fail
Criteria: Pass if the duration matches 60 seconds; Fail if it is too short
or too long.
Test Case 2: Green Light After Red
- Test
Case ID: TS002
- Test
Description: Verify that the Green light turns on after the Red light and
stays for the correct duration.
- Test
Steps:
1. Wait for
the Red light to turn off.
2. Observe
the Green light turning on.
3. Measure
how long it stays on using a timer.
- Expected
Result: The Green light should turn on immediately after the Red light and
stay on for the specified time (e.g., 45 seconds).
- Pass/Fail
Criteria: Pass if the Green light follows the Red light and stays for 45
seconds; Fail otherwise.
Test Case 3: Yellow Light Transition
- Test
Case ID: TS003
- Test
Description: Verify that the Yellow light turns on before switching
between Red and Green lights.
- Test
Steps:
1. Observe
the Yellow light turning on after the Green light.
2. Measure
how long the Yellow light stays on.
- Expected
Result: The Yellow light should turn on for a short time (e.g., 5 seconds)
before changing to Red.
- Pass/Fail
Criteria: Pass if the Yellow light is on for the correct time; Fail
otherwise.
Test Case 4: Pedestrian Crossing
- Test
Case ID: TS004
- Test
Description: Verify that the pedestrian crossing signal works correctly.
- Test
Steps:
1. Press the
pedestrian crossing button.
2. Observe
the pedestrian signal (e.g., Green light for crossing).
3. Check if
it stops after the crossing duration ends.
- Expected
Result: The pedestrian signal should turn Green when the traffic light is
Red and stop after the crossing time (e.g., 30 seconds).
- Pass/Fail
Criteria: Pass if the pedestrian signal behaves as expected; Fail
otherwise.
