/**
 * @license
 * Copyright 2025 Vybestack LLC
 * SPDX-License-Identifier: Apache-2.0
 */
import { describe, it, expect } from 'vitest';
import fc from 'fast-check';
import { shouldClearTodos } from './useTodoPausePreserver.js';
/**
 * @plan PLAN-20260129-TODOPERSIST.P02
 * @requirement REQ-001
 * Behavioral tests for conditional TODO clearing logic.
 */
describe('shouldClearTodos', () => {
    describe('behavioral tests', () => {
        it('should return false for empty TODO list (nothing to clear)', () => {
            const todos = [];
            expect(shouldClearTodos(todos)).toBe(false);
        });
        it('should return true when all TODOs are completed (clear)', () => {
            const todos = [
                {
                    id: '1',
                    content: 'First task',
                    status: 'completed',
                },
                {
                    id: '2',
                    content: 'Second task',
                    status: 'completed',
                },
                {
                    id: '3',
                    content: 'Third task',
                    status: 'completed',
                },
            ];
            expect(shouldClearTodos(todos)).toBe(true);
        });
        it('should return false for mix of completed and pending TODOs (keep)', () => {
            const todos = [
                {
                    id: '1',
                    content: 'Completed task',
                    status: 'completed',
                },
                {
                    id: '2',
                    content: 'Pending task',
                    status: 'pending',
                },
            ];
            expect(shouldClearTodos(todos)).toBe(false);
        });
        it('should return false when all TODOs are pending (keep)', () => {
            const todos = [
                {
                    id: '1',
                    content: 'First pending',
                    status: 'pending',
                },
                {
                    id: '2',
                    content: 'Second pending',
                    status: 'pending',
                },
            ];
            expect(shouldClearTodos(todos)).toBe(false);
        });
        it('should return false when all TODOs are in_progress (keep)', () => {
            const todos = [
                {
                    id: '1',
                    content: 'First in progress',
                    status: 'in_progress',
                },
                {
                    id: '2',
                    content: 'Second in progress',
                    status: 'in_progress',
                },
            ];
            expect(shouldClearTodos(todos)).toBe(false);
        });
        it('should return false for mix of all three statuses (keep)', () => {
            const todos = [
                {
                    id: '1',
                    content: 'Completed task',
                    status: 'completed',
                },
                {
                    id: '2',
                    content: 'Pending task',
                    status: 'pending',
                },
                {
                    id: '3',
                    content: 'In progress task',
                    status: 'in_progress',
                },
            ];
            expect(shouldClearTodos(todos)).toBe(false);
        });
    });
    describe('property-based tests', () => {
        it('should always return false for empty lists (nothing to clear)', () => {
            fc.assert(fc.property(fc.constant([]), (todos) => {
                expect(shouldClearTodos(todos)).toBe(false);
            }));
        });
        it('should return true only when all TODOs are completed', () => {
            const completedTodoArb = fc.record({
                id: fc.string(),
                content: fc.string().filter((s) => s.length > 0),
                status: fc.constant('completed'),
            });
            fc.assert(fc.property(fc.array(completedTodoArb, { minLength: 1 }), (todos) => {
                expect(shouldClearTodos(todos)).toBe(true);
            }));
        });
        it('should return false when at least one TODO is not completed', () => {
            const todoArb = fc.record({
                id: fc.string(),
                content: fc.string().filter((s) => s.length > 0),
                status: fc.oneof(fc.constant('pending'), fc.constant('in_progress'), fc.constant('completed')),
            });
            fc.assert(fc.property(fc
                .array(todoArb, { minLength: 1 })
                .filter((todos) => todos.some((t) => t.status !== 'completed')), (todos) => {
                expect(shouldClearTodos(todos)).toBe(false);
            }));
        });
    });
});
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