TestMu Conference is Back! Future of Testing + AI LambdaTest G2 Announcement

Automation Advisor
Coyote
Microsoft.Coyote.Samples.AccountManager.ETags
InMemoryDbCollection

How to use InMemoryDbCollection class of Microsoft.Coyote.Samples.AccountManager.ETags package

Best Coyote code snippet using Microsoft.Coyote.Samples.AccountManager.ETags.InMemoryDbCollection

Program.cs

Source:Program.cs

...13        [Microsoft.Coyote.SystematicTesting.Test]14        public static async Task TestAccountUpdate()15        {16            // Initialize the mock in-memory DB and account manager.17            var dbCollection = new InMemoryDbCollection();18            var accountManager = new AccountManager(dbCollection);19            string accountName = "MyAccount";20            // Create the account, it should complete successfully and return true.21            var result = await accountManager.CreateAccount(accountName, "first_version", 1);22            Assert.True(result);23            result = await accountManager.UpdateAccount(accountName, "second_version", 2);24            Assert.True(result);25            result = await accountManager.UpdateAccount(accountName, "second_version_alt", 2);26            Assert.False(result);27        }28        [Microsoft.Coyote.SystematicTesting.Test]29        public static async Task TestConcurrentAccountUpdate()30        {31            // Initialize the mock in-memory DB and account manager.32            var dbCollection = new InMemoryDbCollection();33            var accountManager = new AccountManager(dbCollection);34            string accountName = "MyAccount";35            // Create the account, it should complete successfully and return true.36            var result = await accountManager.CreateAccount(accountName, "first_version", 1);37            Assert.True(result);38            // Call UpdateAccount twice without awaiting, which makes both methods run39            // asynchronously with each other.40            var task1 = accountManager.UpdateAccount(accountName, "second_version", 2);41            var task2 = accountManager.UpdateAccount(accountName, "second_version_alt", 2);42            // Then wait both requests to complete.43            await Task.WhenAll(task1, task2);44            // Finally, assert that only one of the two requests succeeded and the other45            // failed. Note that we do not know which one of the two succeeded as the46            // requests ran concurrently (this is why we use an exclusive OR).47            Assert.True(task1.Result ^ task2.Result);48        }49        [Microsoft.Coyote.SystematicTesting.Test]50        public static async Task TestGetAccountAfterConcurrentUpdate()51        {52            // Initialize the mock in-memory DB and account manager.53            var dbCollection = new InMemoryDbCollection();54            var accountManager = new AccountManager(dbCollection);55            string accountName = "MyAccount";56            // Create the account, it should complete successfully and return true.57            var result = await accountManager.CreateAccount(accountName, "first_version", 1);58            Assert.True(result);59            // Call UpdateAccount twice without awaiting, which makes both methods run60            // asynchronously with each other.61            var task1 = accountManager.UpdateAccount(accountName, "second_version", 2);62            var task2 = accountManager.UpdateAccount(accountName, "third_version", 3);63            // Then wait both requests to complete.64            await Task.WhenAll(task1, task2);65            // Finally, get the account and assert that the version is always 3,66            // which is the latest updated version.67            var account = await accountManager.GetAccount(accountName);...

InMemoryDbCollection.cs

Source:InMemoryDbCollection.cs

...4using System.Collections.Concurrent;5using System.Threading.Tasks;6namespace Microsoft.Coyote.Samples.AccountManager.ETags7{8    public class InMemoryDbCollection : IDbCollection9    {10        private readonly ConcurrentDictionary<string, DbRow> Collection;11        public InMemoryDbCollection()12        {13            this.Collection = new ConcurrentDictionary<string, DbRow>();14        }15        public Task<bool> CreateRow(string key, string value)16        {17            return Task.Run(() =>18            {19                // Generate a new ETag when creating a brand new row.20                var dbRow = new DbRow()21                {22                    Value = value,23                    ETag = Guid.NewGuid()24                };25                bool success = this.Collection.TryAdd(key, dbRow);...

InMemoryDbCollection

Using AI Code Generation

1using Microsoft.Coyote.Samples.AccountManager.ETags;2using System;3using System.Collections.Generic;4using System.Linq;5using System.Text;6using System.Threading.Tasks;7{8    {9        static void Main(string[] args)10        {11            InMemoryDbCollection<string, string> collection = new InMemoryDbCollection<string, string>();12            collection.Add("1", "1");13            collection.Add("2", "2");14            collection.Add("3", "3");15            collection.Add("4", "4");16            collection.Add("5", "5");17            collection.Add("6", "6");18            collection.Add("7", "7");19            collection.Add("8", "8");20            collection.Add("9", "9");21            collection.Add("10", "10");22            collection.Add("11", "11");23            collection.Add("12", "12");24            collection.Add("13", "13");25            collection.Add("14", "14");26            collection.Add("15", "15");27            collection.Add("16", "16");28            collection.Add("17", "17");29            collection.Add("18", "18");30            collection.Add("19", "19");31            collection.Add("20", "20");32            collection.Add("21", "21");33            collection.Add("22", "22");34            collection.Add("23", "23");35            collection.Add("24", "24");36            collection.Add("25", "25");37            collection.Add("26", "26");38            collection.Add("27", "27");39            collection.Add("28", "28");40            collection.Add("29", "29");41            collection.Add("30", "30");42            collection.Add("31", "31");43            collection.Add("32", "32");44            collection.Add("33", "33");45            collection.Add("34", "34");46            collection.Add("35", "35");47            collection.Add("36", "36");48            collection.Add("37", "37");49            collection.Add("38", "38");50            collection.Add("39", "39");51            collection.Add("40", "40");52            collection.Add("41", "41");53            collection.Add("42", "42");54            collection.Add("43", "43");55            collection.Add("44", "44");56            collection.Add("45", "45");57            collection.Add("46", "46");58            collection.Add("47", "47

InMemoryDbCollection

Using AI Code Generation

1using Microsoft.Coyote.Samples.AccountManager.ETags;2using System;3using System.Collections.Generic;4using System.Linq;5using System.Text;6using System.Threading.Tasks;7{8    {9        static void Main(string[] args)10        {11            var db = new InMemoryDbCollection();12            db.Add(new ETag("1", "1"));13            db.Add(new ETag("2", "1"));14            db.Add(new ETag("3", "1"));15            db.Add(new ETag("4", "1"));16            db.Add(new ETag("5", "1"));17            db.Add(new ETag("6", "1"));18            db.Add(new ETag("7", "1"));19            db.Add(new ETag("8", "1"));20            db.Add(new ETag("9", "1"));21            db.Add(new ETag("10", "1"));22            db.Add(new ETag("11", "1"));23            db.Add(new ETag("12", "1"));24            db.Add(new ETag("13", "1"));25            db.Add(new ETag("14", "1"));26            db.Add(new ETag("15", "1"));27            db.Add(new ETag("16", "1"));28            db.Add(new ETag("17", "1"));29            db.Add(new ETag("18", "1"));30            db.Add(new ETag("19", "1"));31            db.Add(new ETag("20", "1"));32            db.Add(new ETag("21", "1"));33            db.Add(new ETag("22", "1"));34            db.Add(new ETag("23", "1"));35            db.Add(new ETag("24", "1"));36            db.Add(new ETag("25", "1"));37            db.Add(new ETag("26", "1"));38            db.Add(new ETag("27", "1"));39            db.Add(new ETag("28", "1"));40            db.Add(new ETag("29", "1"));41            db.Add(new ETag("30", "1"));42            db.Add(new ETag("31", "1"));43            db.Add(new ETag("32", "1"));44            db.Add(new ETag("33", "1"));45            db.Add(new ETag("34", "1"));46            db.Add(new ETag("35", "1"));47            db.Add(new ETag("36", "1"));

InMemoryDbCollection

Using AI Code Generation

1using Microsoft.Coyote.Samples.AccountManager.ETags;2using System;3{4    {5        static void Main(string[] args)6        {7            var db = new InMemoryDbCollection();8            db.Add("1", "value1");9            db.Add("2", "value2");10            db.Add("3", "value3");11            db.Add("4", "value4");12            db.Add("5", "value5");13            db.Add("6", "value6");14            db.Add("7", "value7");15            db.Add("8", "value8");16            db.Add("9", "value9");17            db.Add("10", "value10");18            db.Add("11", "value11");19            db.Add("12", "value12");20            db.Add("13", "value13");21            db.Add("14", "value14");22            db.Add("15", "value15");23            db.Add("16", "value16");24            db.Add("17", "value17");25            db.Add("18", "value18");26            db.Add("19", "value19");27            db.Add("20", "value20");28            db.Add("21", "value21");29            db.Add("22", "value22");30            db.Add("23", "value23");31            db.Add("24", "value24");32            db.Add("25", "value25");33            db.Add("26", "value26");34            db.Add("27", "value27");35            db.Add("28", "value28");36            db.Add("29", "value29");37            db.Add("30", "value30");38            db.Add("31", "value31");39            db.Add("32", "value32");40            db.Add("33", "value33");41            db.Add("34", "value34");42            db.Add("35", "value35");43            db.Add("36", "value36");44            db.Add("37", "value37");45            db.Add("38", "value38");46            db.Add("39", "value39");47            db.Add("40", "value40");48            db.Add("41", "value41");49            db.Add("42", "value42");50            db.Add("43", "value43");51            db.Add("44", "value44");52            db.Add("45", "value45");

InMemoryDbCollection

Using AI Code Generation

1using System;2using System.Collections.Generic;3using System.Text;4using Microsoft.Coyote.Samples.AccountManager.ETags;5using Microsoft.Coyote.Samples.AccountManager.ETags.Interfaces;6using Microsoft.Coyote.Samples.AccountManager.ETags.Models;7{8    {9        static void Main(string[] args)10        {11            IETagDbCollection db = new InMemoryDbCollection();12            db.Add("1", "a");13            db.Add("2", "b");14            db.Add("3", "c");15            db.Add("4", "d");16            db.Add("5", "e");17            db.Add("6", "f");18            db.Add("7", "g");19            db.Add("8", "h");20            db.Add("9", "i");21            db.Add("10", "j");22            db.Add("11", "k");23            var result = db.Get("1");24            Console.WriteLine("result: " + result);25            Console.ReadLine();26        }27    }28}29using System;30using System.Collections.Generic;31using System.Text;32using Microsoft.Coyote.Samples.AccountManager.ETags;33using Microsoft.Coyote.Samples.AccountManager.ETags.Interfaces;34using Microsoft.Coyote.Samples.AccountManager.ETags.Models;35{36    {37        static void Main(string[] args)38        {39            IETagDbCollection db = new InMemoryDbCollection();40            db.Add("1", "a");41            db.Add("2", "b");42            db.Add("3", "c");43            db.Add("4", "d");44            db.Add("5", "e");45            db.Add("6", "f");46            db.Add("7", "g");47            db.Add("8", "h");48            db.Add("9", "i");49            db.Add("10", "j");50            db.Add("11", "k");51            var result = db.Get("1");52            Console.WriteLine("result: " + result);53            Console.ReadLine();54        }55    }56}57using System;58using System.Collections.Generic;

InMemoryDbCollection

Using AI Code Generation

1using System;2using System.Collections.Generic;3using System.Text;4using Microsoft.Coyote.Samples.AccountManager.ETags;5using Microsoft.Coyote.Samples.AccountManager.ETags.Interfaces;6{7    {8        private Dictionary<string, string> _db = new Dictionary<string, string>();9        public string Get(string key)10        {11            return _db.ContainsKey(key) ? _db[key] : null;12        }13        public void Set(string key, string value)14        {15            _db[key] = value;16        }17    }18}19using System;20using System.Collections.Generic;21using System.Text;22using Microsoft.Coyote.Samples.AccountManager.ETags;23using Microsoft.Coyote.Samples.AccountManager.ETags.Interfaces;24{25    {26        private Dictionary<string, string> _db = new Dictionary<string, string>();27        public string Get(string key)28        {29            return _db.ContainsKey(key) ? _db[key] : null;30        }31        public void Set(string key, string value)32        {33            _db[key] = value;34        }35    }36}37using System;38using System.Collections.Generic;39using System.Text;40using Microsoft.Coyote.Samples.AccountManager.ETags;41using Microsoft.Coyote.Samples.AccountManager.ETags.Interfaces;42{43    {44        private Dictionary<string, string> _db = new Dictionary<string, string>();45        public string Get(string key)46        {47            return _db.ContainsKey(key) ? _db[key] : null;48        }49        public void Set(string key, string value)50        {51            _db[key] = value;52        }53    }54}55using System;56using System.Collections.Generic;57using System.Text;

InMemoryDbCollection

Using AI Code Generation

1using System;2using System.Collections.Generic;3using System.Linq;4using System.Threading.Tasks;5using Microsoft.Coyote.Samples.AccountManager.ETags;6using Microsoft.Coyote.Samples.AccountManager.ETags.Interfaces;7{8    {9        private readonly Dictionary<string, T> _db = new Dictionary<string, T>();10        private readonly Dictionary<string, string> _dbEtags = new Dictionary<string, string>();11        public Task<T> GetItemAsync(string id)12        {13            if (id == null)14            {15                throw new ArgumentNullException(nameof(id));16            }17            if (_db.TryGetValue(id, out var item))18            {19                return Task.FromResult(item);20            }21            return Task.FromResult(default(T));22        }23        public Task<IEnumerable<T>> GetItemsAsync(string queryString = null)24        {25            if (queryString == null)26            {27                return Task.FromResult(_db.Values.AsEnumerable());28            }29            throw new NotImplementedException();30        }31        public Task<T> CreateItemAsync(T item)32        {33            if (item == null)34            {35                throw new ArgumentNullException(nameof(item));36            }37            var id = Guid.NewGuid().ToString();38            _db.Add(id, item);39            _dbEtags.Add(id, Guid.NewGuid().ToString());40            return Task.FromResult(item);41        }42        public Task<bool> UpdateItemAsync(string id, T item, string etag)43        {44            if (id == null)45            {46                throw new ArgumentNullException(nameof(id));47            }48            if (item == null)49            {50                throw new ArgumentNullException(nameof(item));51            }52            if (!_db.TryGetValue(id, out var existingItem))53            {54                return Task.FromResult(false);55            }56            if (!_dbEtags.TryGetValue(id, out var existingEtag))57            {58                return Task.FromResult(false);59            }60            if (etag != existingEtag)61            {62                return Task.FromResult(false);63            }64            _db[id] = item;65            _dbEtags[id] = Guid.NewGuid().ToString();66            return Task.FromResult(true);67        }68        public Task<bool> DeleteItemAsync(string id, string etag)69        {70            if (id == null)71            {72                throw new ArgumentNullException(nameof(id));73            }74            if (!_db.TryGetValue(id, out var existingItem))75            {76                return Task.FromResult(false);77            }78            if (!_db

InMemoryDbCollection

Using AI Code Generation

1using Microsoft.Coyote.Samples.AccountManager.ETags;2using System;3using System.Collections.Generic;4using System.Linq;5using System.Threading.Tasks;6{7    {8        private readonly InMemoryDbCollection<Account> _accounts;9        public AccountStore()10        {11            _accounts = new InMemoryDbCollection<Account>();12        }13        public async Task<Account> GetAccountAsync(int id)14        {15            return await _accounts.GetAsync(id);16        }17        public async Task<Account> AddOrUpdateAccountAsync(Account account)18        {19            return await _accounts.AddOrUpdateAsync(account);20        }21    }22}23using Microsoft.Coyote.Samples.AccountManager.ETags;24using System;25using System.Collections.Generic;26using System.Linq;27using System.Threading.Tasks;28{29    {30        private readonly InMemoryDbCollection<Account> _accounts;31        public AccountStore()32        {33            _accounts = new InMemoryDbCollection<Account>();34        }35        public async Task<Account> GetAccountAsync(int id)36        {37            return await _accounts.GetAsync(id);38        }39        public async Task<Account> AddOrUpdateAccountAsync(Account account)40        {41            return await _accounts.AddOrUpdateAsync(account);42        }43    }44}45using Microsoft.Coyote.Samples.AccountManager.ETags;46using System;47using System.Collections.Generic;48using System.Linq;49using System.Threading.Tasks;50{51    {52        private readonly InMemoryDbCollection<Account> _accounts;53        public AccountStore()54        {55            _accounts = new InMemoryDbCollection<Account>();56        }57        public async Task<Account> GetAccountAsync(int id)58        {59            return await _accounts.GetAsync(id);60        }61        public async Task<Account> AddOrUpdateAccountAsync(Account account)62        {63            return await _accounts.AddOrUpdateAsync(account);64        }65    }66}67using Microsoft.Coyote.Samples.AccountManager.ETags;68using System;69using System.Collections.Generic;

InMemoryDbCollection

Using AI Code Generation

1{2    public static void Main()3    {4        var db = new InMemoryDbCollection();5        db.Add(new User { Id = 1, Name = "John" });6        db.Add(new User { Id = 2, Name = "Jane" });7        Console.WriteLine(db.Count());8    }9}10{11    private readonly Dictionary<int, T> _items = new Dictionary<int, T>();12    public void Add(T item)13    {14        _items.Add(item.Id, item);15    }16    public void Update(T item)17    {18        if (_items.ContainsKey(item.Id))19        {20            _items[item.Id] = item;21        }22    }23    public void Delete(T item)24    {25        if (_items.ContainsKey(item.Id))26        {27            _items.Remove(item.Id);28        }29    }30    public T GetById(int id)31    {32        if (_items.ContainsKey(id))33        {34            return _items[id];35        }36        return null;37    }38    public IEnumerable<T> GetAll()39    {40        return _items.Values;41    }42    public IEnumerable<T> GetAll(Expression<Func<T, bool>> predicate)43    {44        return _items.Values.Where(predicate.Compile());45    }46    public int Count()47    {48        return _items.Count;49    }50    public void Clear()51    {52        _items.Clear();53    }54}

InMemoryDbCollection

Using AI Code Generation

1InMemoryDbCollection<SampleData> db = new InMemoryDbCollection<SampleData>();2InMemoryDbCollection<SampleData> db = new InMemoryDbCollection<SampleData>();3InMemoryDbCollection<SampleData> db = new InMemoryDbCollection<SampleData>();4InMemoryDbCollection<SampleData> db = new InMemoryDbCollection<SampleData>();5InMemoryDbCollection<SampleData> db = new InMemoryDbCollection<SampleData>();6InMemoryDbCollection<SampleData> db = new InMemoryDbCollection<SampleData>();7InMemoryDbCollection<SampleData> db = new InMemoryDbCollection<SampleData>();8InMemoryDbCollection<SampleData> db = new InMemoryDbCollection<SampleData>();9InMemoryDbCollection<SampleData> db = new InMemoryDbCollection<SampleData>();

InMemoryDbCollection

Using AI Code Generation

1{2    private readonly InMemoryDbCollection<Account> accounts;3    public AccountManager()4    {5        this.accounts = new InMemoryDbCollection<Account>();6    }7    public async Task<Account> CreateAccountAsync(string name, string email)8    {9        var account = new Account(name, email);10        await this.accounts.AddAsync(account);11        return account;12    }13    public async Task<Account> GetAccountAsync(Guid id)14    {15        return await this.accounts.GetAsync(id);16    }17    public async Task<Account> UpdateAccountAsync(Account account)18    {19        await this.accounts.UpdateAsync(account);20        return account;21    }22    public async Task<Account> DeleteAccountAsync(Guid id)23    {24        var account = await this.accounts.GetAsync(id);25        await this.accounts.DeleteAsync(id);26        return account;27    }28}29{30    public Guid Id { get; set; }31    public string Name { get; set; }32    public string Email { get; set; }33    public string ETag { get; set; }34    public Account(string name, string email)35    {36        this.Id = Guid.NewGuid();37        this.Name = name;38        this.Email = email;39        this.ETag = Guid.NewGuid().ToString();40    }41}42{43    private readonly Dictionary<Guid, T> dbCollection;44    public InMemoryDbCollection()45    {46        this.dbCollection = new Dictionary<Guid, T>();47    }48    public async Task AddAsync(T entity)

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.