public async void DeleteArticleByIdAsync_ShouldThrowArgumentNullExceptionWithInvalidArticleId()
{
var options = new DbContextOptionsBuilder <TechAndToolsDbContext>()
.UseInMemoryDatabase(databaseName: "DeleteArticleByIdAsync_ShouldThrowArgumentNullExceptionWithInvalidArticleId")
.Options;
TechAndToolsDbContext context = new TechAndToolsDbContext(options);
IArticleService articleService = new ArticleService(context);
await this.SeedData(context);
int invalidArticleId = 1111;
await Assert.ThrowsAsync <ArgumentNullException>(() =>
articleService.DeleteArticleByIdAsync(invalidArticleId));
}
public async void DeleteArticleByIdAsync_ShouldDeleteArticleFromDatabaseById()
{
var options = new DbContextOptionsBuilder <TechAndToolsDbContext>()
.UseInMemoryDatabase(databaseName: "DeleteArticleByIdAsync_ShouldDeleteArticleFromDatabaseById")
.Options;
TechAndToolsDbContext context = new TechAndToolsDbContext(options);
IArticleService articleService = new ArticleService(context);
await this.SeedData(context);
int articleId = 1;
int expectedCount = context.Articles.ToList().Count - 1;
bool actualResult = await articleService.DeleteArticleByIdAsync(articleId);
int actualCount = context.Articles.ToList().Count;
Assert.True(actualResult);
Assert.Equal(expectedCount, actualCount);
}