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using ex_041_004_TestingInMemory;
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using Microsoft.EntityFrameworkCore;
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using System.Linq;
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using Xunit;
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using Microsoft.Data.Sqlite;
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namespace ex_041_004_UnitTests_w_SQLiteInMemory
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{
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public class NounoursDB_Tests
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{
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[Fact]
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public void Add_Test()
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{
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//connection must be opened to use In-memory database
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var connection = new SqliteConnection("DataSource=:memory:");
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connection.Open();
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var options = new DbContextOptionsBuilder<NounoursContext>()
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.UseSqlite(connection)
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.Options;
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//prepares the database with one instance of the context
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using (var context = new NounoursContext(options))
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{
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//context.Database.OpenConnection();
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context.Database.EnsureCreated();
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Nounours chewie = new Nounours { Nom = "Chewbacca" };
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Nounours yoda = new Nounours { Nom = "Yoda" };
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Nounours ewok = new Nounours { Nom = "Ewok" };
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context.Nounours.Add(chewie);
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context.Nounours.Add(yoda);
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context.Nounours.Add(ewok);
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context.SaveChanges();
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}
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//uses another instance of the context to do the tests
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using (var context = new NounoursContext(options))
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{
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context.Database.EnsureCreated();
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Assert.Equal(3, context.Nounours.Count());
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Assert.Equal("Chewbacca", context.Nounours.First().Nom);
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}
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}
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[Fact]
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public void Modify_Test()
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{
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//connection must be opened to use In-memory database
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var connection = new SqliteConnection("DataSource=:memory:");
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connection.Open();
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var options = new DbContextOptionsBuilder<NounoursContext>()
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.UseSqlite(connection)
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.Options;
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//prepares the database with one instance of the context
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using (var context = new NounoursContext(options))
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{
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//context.Database.OpenConnection();
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context.Database.EnsureCreated();
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Nounours chewie = new Nounours { Nom = "Chewbacca" };
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Nounours yoda = new Nounours { Nom = "Yoda" };
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Nounours ewok = new Nounours { Nom = "Ewok" };
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context.Nounours.Add(chewie);
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context.Nounours.Add(yoda);
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context.Nounours.Add(ewok);
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context.SaveChanges();
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}
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//uses another instance of the context to do the tests
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using (var context = new NounoursContext(options))
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{
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context.Database.EnsureCreated();
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string nameToFind = "ew";
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Assert.Equal(2, context.Nounours.Where(n => n.Nom.ToLower().Contains(nameToFind)).Count());
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nameToFind = "wo";
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Assert.Equal(1, context.Nounours.Where(n => n.Nom.ToLower().Contains(nameToFind)).Count());
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var ewok = context.Nounours.Where(n => n.Nom.ToLower().Contains(nameToFind)).First();
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ewok.Nom = "Wicket";
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context.SaveChanges();
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}
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//uses another instance of the context to do the tests
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using (var context = new NounoursContext(options))
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{
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context.Database.EnsureCreated();
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string nameToFind = "ew";
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Assert.Equal(1, context.Nounours.Where(n => n.Nom.ToLower().Contains(nameToFind)).Count());
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nameToFind = "wick";
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Assert.Equal(1, context.Nounours.Where(n => n.Nom.ToLower().Contains(nameToFind)).Count());
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}
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}
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}
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}
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