bashrs 6.66.0

#![allow(clippy::unwrap_used)]
#![allow(clippy::expect_used)]
#![allow(unused_imports)]

use super::super::ast::Redirect;
use super::super::lexer::Lexer;
use super::super::parser::BashParser;
use super::super::semantic::SemanticAnalyzer;
use super::super::*;

#[test]
fn test_JOB_001_background_jobs_race_conditions() {
    // DOCUMENTATION: Background job race conditions (5 critical race conditions)
    //
    // RACE 1: Output interleaving
    // task1 &
    // task2 &
    // wait
    // Output from task1 and task2 interleaves unpredictably
    // PROBLEM: Cannot predict output order
    //
    // RACE 2: File access conflicts
    // process file.txt &
    // modify file.txt &
    // wait
    // Both jobs access file.txt simultaneously
    // PROBLEM: Data corruption, race condition
    //
    // RACE 3: Resource contention
    // heavy_task &
    // heavy_task &
    // heavy_task &
    // wait
    // All tasks compete for CPU/memory
    // PROBLEM: Timing varies, non-deterministic performance
    //
    // RACE 4: Dependency violations
    // generate_data &
    // process_data &  # Depends on generate_data output
    // wait
    // process_data may run before generate_data completes
    // PROBLEM: Missing dependency, wrong results
    //
    // RACE 5: Exit status ambiguity
    // task1 &
    // task2 &
    // wait
    // If task1 fails, exit status is non-deterministic (depends on timing)
    // PROBLEM: Cannot reliably check for errors

    let race_conditions = r#"
# RACE 1: Output interleaving (non-deterministic)
echo "Task 1 starting" &
echo "Task 2 starting" &
wait
# Output order unpredictable:
# Task 1 starting
# Task 2 starting
# OR
# Task 2 starting
# Task 1 starting

# RACE 2: File access conflicts
{
    echo "Process 1" >> output.txt
} &
{
    echo "Process 2" >> output.txt
} &
wait
# output.txt content order unpredictable

# RACE 3: Resource contention
heavy_computation &
heavy_computation &
heavy_computation &
wait
# Timing varies based on system load

# RACE 4: Dependency violations
generate_input_data &
process_input_data &  # Depends on generate_input_data!
wait
# process_input_data may run before data is ready

# RACE 5: Exit status ambiguity
false &  # Fails immediately
true &   # Succeeds
wait $!  # Which job's exit status?
# Non-deterministic error handling
"#;

    let mut lexer = Lexer::new(race_conditions);
    if let Ok(tokens) = lexer.tokenize() {
        assert!(
            !tokens.is_empty(),
            "Race conditions should tokenize successfully"
        );
        let _ = tokens;
    }

    // Background jobs introduce RACE CONDITIONS
    // bashrs FORBIDS background jobs to prevent races
    // CRITICAL: Sequential execution is deterministic
}

#[test]
fn test_JOB_001_background_jobs_testing_implications() {
    // DOCUMENTATION: Background job testing implications (4 critical issues)
    //
    // ISSUE 1: Cannot assert on intermediate state
    // test_background_job() {
    //   process_data &
    //   # Cannot assert on process_data state here (still running!)
    //   wait
    // }
    // PROBLEM: Test cannot check state while background job runs
    //
    // ISSUE 2: Flaky tests due to timing
    // test_parallel_processing() {
    //   task1 & task2 & wait
    //   # Test may pass/fail depending on task completion order
    // }
    // PROBLEM: Tests are non-deterministic
    //
    // ISSUE 3: Cannot isolate failures
    // test_multiple_jobs() {
    //   job1 & job2 & job3 & wait
    //   # If one job fails, which one? Cannot tell!
    // }
    // PROBLEM: Cannot debug failures
    //
    // ISSUE 4: Cleanup issues
    // test_background_cleanup() {
    //   long_task &
    //   # Test exits before long_task completes
    //   # Background job becomes orphan
    // }
    // PROBLEM: Background jobs outlive tests, pollute environment

    let testing_implications = r#"
# BAD TEST: Cannot assert on intermediate state
test_bad_intermediate_state() {
    process_data &
    # PROBLEM: Cannot check if process_data is working
    # Job is still running, state is unknown
    wait
}

# GOOD TEST: Foreground execution (deterministic)
test_good_foreground() {
    process_data
    # Can assert on result after completion
    [ -f output.txt ] || exit 1
}

# BAD TEST: Flaky due to timing
test_flaky_parallel() {
    task1 &
    task2 &
    wait
    # PROBLEM: Order of completion is non-deterministic
    # Test may pass sometimes, fail others
}

# GOOD TEST: Sequential (deterministic)
test_deterministic_sequential() {
    task1
    task2
    # Order is guaranteed, reproducible
    [ -f task1.out ] || exit 1
    [ -f task2.out ] || exit 1
}

# BAD TEST: Cannot isolate failures
test_cannot_isolate() {
    job1 &
    job2 &
    job3 &
    wait
    # PROBLEM: If wait fails, which job failed?
}

# GOOD TEST: Isolated failures
test_isolated() {
    job1 || exit 1
    job2 || exit 2
    job3 || exit 3
    # Each job checked individually
}
"#;

    let mut lexer = Lexer::new(testing_implications);
    if let Ok(tokens) = lexer.tokenize() {
        assert!(
            !tokens.is_empty(),
            "Testing implications should tokenize successfully"
        );
        let _ = tokens;
    }

    // Background jobs make tests NON-REPRODUCIBLE and FLAKY
    // bashrs enforces DETERMINISTIC testing (foreground execution)
    // NEVER use background jobs in test code
}