public void Exists_WithNotExistingName_ShouldReturnFalse() { // Arrange StarStuffDbContext db = this.Database; TelescopeService telescopeService = new TelescopeService(db); string telescopeName = this.GetFakeTelescopes().FirstOrDefault(t => t.Id == 1).Name; // Act bool result = telescopeService.Exists(telescopeName); // Assert Assert.False(result); }