public async Task <bool> CreateAsync(TagCreateServiceModel model)
{
if (!this.IsEntityStateValid(model))
{
return(false);
}
var nameToCheck = model.Name.Trim().ToLower();
// Verify that a tag with the provided name does not already exist
if (await this.Context.Tags.AnyAsync(t => t.Name.ToLower() == nameToCheck))
{
return(false);
}
var tagDbModel = new Tag
{
Name = model.Name.Trim().ToLower()
};
await this.Context.Tags.AddAsync(tagDbModel);
await this.Context.SaveChangesAsync();
return(true);
}
public async Task CreateAsync_WithDuplicateName_ReturnsFalse()
{
// Arrange
const string testTagName = "testtag";
var context = this.NewInMemoryDatabase();
await context.Tags.AddAsync(new Tag
{
Name = testTagName
});
await context.SaveChangesAsync();
var serviceModel = new TagCreateServiceModel
{
Name = testTagName
};
var tagsService = new TagsService(context);
// Act
var result = await tagsService.CreateAsync(serviceModel);
// Assert
Assert.False(result);
Assert.True(await context.Tags.AnyAsync(t => t.Name == testTagName));
Assert.Equal(1, await context.Tags.CountAsync());
}
public async Task <IActionResult> Create(string name)
{
if (name == null)
{
return(this.Ok(new { success = false }));
}
var serviceModel = new TagCreateServiceModel
{
Name = name
};
var success = await this.tagsService.CreateAsync(serviceModel);
return(this.Ok(new { success }));
}
public async Task CreateAsync_WithInvalidModel_ReturnsFalse()
{
// Arrange
var context = this.NewInMemoryDatabase();
var serviceModel = new TagCreateServiceModel
{
Name = null
};
var tagsService = new TagsService(context);
// Act
var result = await tagsService.CreateAsync(serviceModel);
// Assert
Assert.False(result);
Assert.Equal(0, await context.Tags.CountAsync());
}
public async Task CreateAsync_WithValidModel_WorksCorrectly()
{
// Arrange
var context = this.NewInMemoryDatabase();
var serviceModel = new TagCreateServiceModel
{
Name = "TestTag"
};
var tagsService = new TagsService(context);
// Act
var result = await tagsService.CreateAsync(serviceModel);
// Assert
Assert.True(result);
Assert.True(await context.Tags.AnyAsync(t => t.Name == serviceModel.Name.ToLower()));
}