@isTeststatic void validateRecipes() {    List<Recipe__c> newRecipes = new List<Recipe__c>();    Recipe__c recipe1 = new Recipe__c();    recipe1.Name = 'Recipe 1';    recipe1.Active_Time__c = 10;    recipe1.Description__c = 'Description 1';    recipe1.Active_Time_Units__c = 'Minutes';    recipe1.Servings__c = 4;    newRecipes.add(recipe1);    RecipeTriggerHandler.validateRecipes(newRecipes);    System.assertEquals(false, newRecipes[0].Draft__c, 'Recipe 1 should not be a draft');}

List<Recipe__c> testRecipes = new List<Recipe__c>{    new Recipe__c(        Name = 'SimpleTestRecipe',        Active_Time__c = 1,        Active_Time_Units__c = 'Minutes',        Description__c = 'Test Description.',        Servings__c = 4    ),    new Recipe__c(        Name = 'ModerateTestRecipe',        Active_Time__c = 1,        Active_Time_Units__c = 'Minutes',        Description__c = 'Test Description.',        Servings__c = 8    ),    new Recipe__c(        Name = 'DifficultTestRecipe',        Active_Time__c = 3,        Active_Time_Units__c = 'Hours',        Description__c = 'Test Description.',        Servings__c = 8    )};Test.startTest();insert testRecipes;Test.stopTest();// Query back by name to assert expected valuesMap<String, Recipe__c> results = new Map<String, Recipe__c>(    [SELECT Name, Complexity__c FROM Recipe__c WHERE Name IN :new List<String>{         'SimpleTestRecipe', 'ModerateTestRecipe', 'DifficultTestRecipe'    }]);System.assertEquals('Simple', results.get('SimpleTestRecipe').Complexity__c, 'Expected Simple');System.assertEquals('Moderate', results.get('ModerateTestRecipe').Complexity__c, 'Expected Moderate');System.assertEquals('Difficult', results.get('DifficultTestRecipe').Complexity__c, 'Expected Difficult');

 @IsTeststatic void testReviewTaskPositive() {    // Create Cookbook    Cookbook__c book = new Cookbook__c(Name = 'TestCookbook');    insert book;    // Create Recipe    Recipe__c rec = new Recipe__c(        Name = 'TestRecipe',        Active_Time__c = 3,        Active_Time_Units__c = 'Hours',        Description__c = 'Test Description.',        Servings__c = 8,        Contains_Allergens__c = false    );    insert rec;    // Link recipe → cookbook    Recipe_Usage__c usage = new Recipe_Usage__c(        Cookbook__c = book.Id,        Recipe__c = rec.Id    );    insert usage;    // Trigger the logic by updating to Contains_Allergens__c = true    rec.Contains_Allergens__c = true;    Test.startTest();    update rec;    Test.stopTest();    // Query the created task    List<Task> taskList = [        SELECT Id, WhatId, ActivityDate        FROM Task    ];    System.assertEquals(1, taskList.size(), 'One task should be created');    System.assertEquals(book.Id, taskList[0].WhatId, 'Task should be related to cookbook');    System.assertEquals(System.today().addDays(7), taskList[0].ActivityDate, 'Due date should be in 7 days');}

    // Create Cookbook    Cookbook__c book = new Cookbook__c(Name = 'Book2');    insert book;    // Recipe already has allergens = true    Recipe__c rec = new Recipe__c(        Name = 'Recipe2',        Contains_Allergens__c = true    );    insert rec;    // Link recipe → cookbook    insert new Recipe_Usage__c(Cookbook__c = book.Id, Recipe__c = rec.Id);    // Update something unrelated    rec.Description__c = 'Updated description';    Test.startTest();    update rec;    Test.stopTest();    System.assertEquals(        0,        [SELECT COUNT() FROM Task],        'No task should be created if allergens was already true'    );}//Nagative Test 2@IsTeststatic void testNoTaskIfNotUsedInCookbook() {    // Recipe initially allergens false    Recipe__c rec = new Recipe__c(        Name = 'RecipeNoUse',        Contains_Allergens__c = false    );    insert rec;    // Update → set allergens to true but no usage record exists    rec.Contains_Allergens__c = true;    Test.startTest();    update rec;    Test.stopTest();    System.assertEquals(        0,        [SELECT COUNT() FROM Task],        'No task should be created if recipe is not linked to any cookbook'    );}//Bulk Test@IsTeststatic void testBulkProcessing() {    Cookbook__c book = new Cookbook__c(Name = 'BulkBook');    insert book;    List<Recipe__c> recipes = new List<Recipe__c>();    for (Integer i = 0; i < 5; i++) {        recipes.add(new Recipe__c(            Name = 'BulkRecipe ' + i,            Contains_Allergens__c = false        ));    }    insert recipes;    // Link all recipes to the same cookbook    List<Recipe_Usage__c> usages = new List<Recipe_Usage__c>();    for (Recipe__c r : recipes) {        usages.add(new Recipe_Usage__c(Cookbook__c = book.Id, Recipe__c = r.Id));    }    insert usages;    // Update all recipes → set allergens true    for (Recipe__c r : recipes) {        r.Contains_Allergens__c = true;    }    Test.startTest();    update recipes;    Test.stopTest();    Integer countTasks = [SELECT COUNT() FROM Task];    System.assertEquals(5, countTasks, 'Should create one task per recipe in bulk mode');}