I believe there’s a fundamental issue with the current test runner setup.
When I run the tests for the new history extension, I get the following output:
[tester::#AG6] Running tests for Stage #AG6 (History - Limiting history entries)
[tester::#AG6] Running ./your_program.sh
[your-program] $ echo orange strawberry
[your-program] orange strawberry
[tester::#AG6] ✓ Command executed successfully
[your-program] $ echo pear pineapple
[your-program] pear pineapple
[tester::#AG6] ✓ Command executed successfully
[your-program] $ echo blueberry banana
[your-program] blueberry banana
[tester::#AG6] ✓ Command executed successfully
[your-program] $ history 2
[your-program] 3 echo blueberry banana
[your-program] 4 history 2
[tester::#AG6] ✓ Received expected response
[your-program] $ echo apple blueberry
[your-program] apple blueberry
[tester::#AG6] ✓ Command executed successfully
[your-program] $ echo strawberry pear
[your-program] strawberry pear
[tester::#AG6] ✓ Command executed successfully
[your-program] $ echo apple pineapple
[your-program] apple pineapple
[tester::#AG6] ✓ Command executed successfully
[your-program] $ echo blueberry grape
[your-program] blueberry grape
[tester::#AG6] ✓ Command executed successfully
[your-program] $ echo raspberry pineapple
[your-program] raspberry pineapple
[tester::#AG6] ✓ Command executed successfully
[your-program] $ echo pear apple
[your-program] pear apple
[tester::#AG6] ✓ Command executed successfully
[your-program] $ history 3
[your-program] 9 echo raspberry pineapple
[your-program] 10 echo pear apple
[your-program] 11 history 3
[tester::#AG6] ✓ Received expected response
[your-program] $
[tester::#AG6] Test passed.
[tester::#YF5] Running tests for Stage #YF5 (History - Listing history)
[tester::#YF5] Running ./your_program.sh
[your-program] $ echo banana mango
[your-program] banana mango
[tester::#YF5] ✓ Command executed successfully
[your-program] $ echo mango orange
[your-program] mango orange
[tester::#YF5] ✓ Command executed successfully
[your-program] $ echo pear strawberry
[your-program] pear strawberry
[tester::#YF5] ✓ Command executed successfully
[your-program] $ history
[your-program] 1 echo orange strawberry
[tester::#YF5] Output does not match expected value.
[tester::#YF5] Expected: " 1 echo banana mango"
[tester::#YF5] Received: " 1 echo orange strawberry"
[your-program] 2 echo pear pineapple
[your-program] 3 echo blueberry banana
[your-program] 4 history 2
[your-program] 5 echo apple blueberry
[your-program] 6 echo strawberry pear
[your-program] 7 echo apple pineapple
[your-program] 8 echo blueberry grape
[your-program] 9 echo raspberry pineapple
[your-program] 10 echo pear apple
[your-program] 11 history 3
[your-program] 12 echo banana mango
[your-program] 13 echo mango orange
[your-program] 14 echo pear strawberry
[your-program] 15 history
[your-program] $
[tester::#YF5] Assertion failed.
[tester::#YF5] Test failed
The problem is that the history persists across test runs, even though each test should start with a clean state. My implementation writes history to the .bash_history file in the user’s home directory, mimicking how a real shell behaves. However, because this file is shared across runs, entries from previous tests are being carried over, causing later tests to fail.
This is misleading, as my implementation is actually more faithful to how shells like bash manage history (i.e., persisting across sessions). Meanwhile, the expected test output seems to assume that history is stored in memory only and isolated per test session, which doesn’t reflect real-world shell behavior.
To be clear: I’m not asking for help fixing my code. The test runner itself needs to be corrected to either isolate the history file per test or reset the home directory between runs. As it stands, the tests are failing not because of incorrect behavior, but because of a flawed test environment.
Thanks.