qubit-batch 0.8.1

One-shot batch execution and processing with sequential and scoped parallel utilities
Documentation 
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/*******************************************************************************
 *
 *    Copyright (c) 2025 - 2026 Haixing Hu.
 *
 *    SPDX-License-Identifier: Apache-2.0
 *
 *    Licensed under the Apache License, Version 2.0.
 *
 ******************************************************************************/

use std::time::Duration;

use qubit_batch::{
    BatchOutcomeBuildError,
    BatchOutcomeBuilder,
    BatchTaskError,
    BatchTaskFailure,
};

#[test]
fn test_batch_outcome_builder_builds_valid_outcome() {
    let failures = vec![
        BatchTaskFailure::new(2, BatchTaskError::panicked("panic")),
        BatchTaskFailure::new(1, BatchTaskError::Failed("failed")),
    ];

    let outcome = BatchOutcomeBuilder::builder(3)
        .completed_count(3)
        .succeeded_count(1)
        .failed_count(1)
        .panicked_count(1)
        .elapsed(Duration::from_millis(5))
        .failures(failures)
        .build()
        .expect("outcome should be valid");

    assert_eq!(outcome.task_count(), 3);
    assert_eq!(outcome.completed_count(), 3);
    assert_eq!(outcome.succeeded_count(), 1);
    assert_eq!(outcome.failed_count(), 1);
    assert_eq!(outcome.panicked_count(), 1);
    assert_eq!(outcome.failure_count(), 2);
    assert!(!outcome.is_success());
    assert_eq!(outcome.failures()[0].index(), 1);
    assert_eq!(outcome.failures()[1].index(), 2);
}

#[test]
fn test_batch_outcome_builder_builds_after_validation() {
    let outcome = BatchOutcomeBuilder::<&'static str>::builder(1)
        .completed_count(1)
        .succeeded_count(1)
        .build()
        .expect("builder should validate consistent counters before building");

    assert!(outcome.is_success());
    assert_eq!(outcome.task_count(), 1);
}

#[test]
fn test_batch_outcome_builder_rejects_invalid_counters() {
    let error = BatchOutcomeBuilder::<&'static str>::builder(2)
        .completed_count(3)
        .succeeded_count(3)
        .build()
        .expect_err("completed count should be invalid");

    assert_eq!(
        error,
        BatchOutcomeBuildError::CompletedCountExceeded {
            task_count: 2,
            completed_count: 3,
        }
    );
}

#[test]
fn test_batch_outcome_builder_rejects_duplicate_failure_indexes() {
    let error = BatchOutcomeBuilder::builder(2)
        .completed_count(2)
        .failed_count(1)
        .panicked_count(1)
        .failures(vec![
            BatchTaskFailure::new(0, BatchTaskError::Failed("failed")),
            BatchTaskFailure::new(0, BatchTaskError::panicked("panic")),
        ])
        .build()
        .expect_err("duplicate failure indexes should be rejected");

    assert_eq!(
        error,
        BatchOutcomeBuildError::DuplicateFailureIndex { index: 0 }
    );
}