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@ -83,7 +83,7 @@ namespace ex_041_004_UnitTests
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public void Add_Test()
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public void Add_Test()
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{
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{
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var options = new DbContextOptionsBuilder<NounoursContext>()
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var options = new DbContextOptionsBuilder<NounoursContext>()
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.UseInMemoryDatabase(databaseName: "Add_writes_to_database")
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.UseInMemoryDatabase(databaseName: "Add_Test_database")
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.Options;
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.Options;
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// runs the test against one instance of the context
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// runs the test against one instance of the context
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@ -110,8 +110,105 @@ namespace ex_041_004_UnitTests
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}
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}
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```
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```
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test
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Ce premier test permet d'ajouter 3 nounours et :
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* nouveau projet
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* de vérifier qu'il y a bien trois nounours ajoutés
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* dépendances
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```csharp
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* nuget
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Assert.Equal(3, context.Nounours.Count());
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* écriture du test
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```
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* de vérifier que le premier s'appelle bien Chewbacca :
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```csharp
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Assert.Equal("Chewbacca", context.Nounours.First().Nom);
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```
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Notez que le choix du fournisseur est bien fait au démarrage du test avec la création du ```DbContextOptionsBuilder``` :
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```csharp
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var options = new DbContextOptionsBuilder<NounoursContext>()
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.UseInMemoryDatabase(databaseName: "Add_writes_to_database")
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.Options;
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```
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et que l'injection est effectuée plus bas :
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```csharp
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using (var context = new NounoursContext(options))
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{
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//...
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}
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```
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On peut ensuite ajouter un autre test, par exemple :
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```csharp
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[Fact]
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public void Modify_Test()
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{
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var options = new DbContextOptionsBuilder<NounoursContext>()
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.UseInMemoryDatabase(databaseName: "Modify_Test_database")
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.Options;
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// Run the test against one instance of the context
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using (var context = new NounoursContext(options))
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{
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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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// Use a separate instance of the context to verify correct data was saved to database
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using (var context = new NounoursContext(options))
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{
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string nameToFind = "ew";
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Assert.Equal(2, context.Nounours.Where(n => n.Nom.Contains(nameToFind, System.StringComparison.CurrentCultureIgnoreCase)).Count());
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nameToFind = "ewo";
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Assert.Equal(1, context.Nounours.Where(n => n.Nom.Contains(nameToFind, System.StringComparison.CurrentCultureIgnoreCase)).Count());
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var ewok = context.Nounours.Where(n => n.Nom.Contains(nameToFind, System.StringComparison.CurrentCultureIgnoreCase)).First();
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ewok.Nom = "Wicket";
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context.SaveChanges();
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}
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// Use a separate instance of the context to verify correct data was saved to database
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using (var context = new NounoursContext(options))
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{
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string nameToFind = "ew";
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Assert.Equal(1, context.Nounours.Where(n => n.Nom.Contains(nameToFind, System.StringComparison.CurrentCultureIgnoreCase)).Count());
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nameToFind = "wick";
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Assert.Equal(1, context.Nounours.Where(n => n.Nom.Contains(nameToFind, System.StringComparison.CurrentCultureIgnoreCase)).Count());
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}
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}
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```
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Ce cas de test :
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* vérifie d'abord qu'il y a deux nounours dont le nom contient la chaîne "ew",
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```csharp
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string nameToFind = "ew";
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Assert.Equal(2, context.Nounours.Where(n => n.Nom.Contains(nameToFind, System.StringComparison.CurrentCultureIgnoreCase)).Count());
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```
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* vérifie qu'il y a un nounours dont le nom contient la chaîne "ewo"
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```csharp
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nameToFind = "ewo";
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Assert.Equal(1, context.Nounours.Where(n => n.Nom.Contains(nameToFind, System.StringComparison.CurrentCultureIgnoreCase)).Count());
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```
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* modifie le nom de ce nounours en "Wicket"
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```csharp
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var ewok = context.Nounours.Where(n => n.Nom.Contains(nameToFind, System.StringComparison.CurrentCultureIgnoreCase)).First();
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ewok.Nom = "Wicket";
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```
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* enregistre les changements
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```csharp
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context.SaveChanges();
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```
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* vérifie ensuite qu'il n'y a plus qu'un Nounours dont le nom contient la chaîne "ew"
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```csharp
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string nameToFind = "ew";
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Assert.Equal(1, context.Nounours.Where(n => n.Nom.Contains(nameToFind, System.StringComparison.CurrentCultureIgnoreCase)).Count());
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```
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* vérifie qu'il y a un Nounours dont le nom contient la chaîne "wick"
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```csharp
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nameToFind = "wick";
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Assert.Equal(1, context.Nounours.Where(n => n.Nom.Contains(nameToFind, System.StringComparison.CurrentCultureIgnoreCase)).Count());
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```
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---
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Copyright © 2019-2020 Marc Chevaldonné
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