public void Add_ShouldThrowArgumentNullException_WhenEntityIsNullable()
{
var mockDbSet = new Mock <DbSet <FakeEmployee> >();
var mockDbContext = new Mock <ISalaryCalculatorDbContext>();
mockDbContext.Setup(mock => mock.Set <FakeEmployee>()).Returns(mockDbSet.Object);
var repo = new SalaryCalculatorRepository <FakeEmployee>(mockDbContext.Object);
Assert.That(() => repo.Add(null), Throws.InstanceOf <ArgumentNullException>().With.Message.Contains("Entity cannot be null"));
}
public void AddMethod_ShouldInvokedOnce_WhenParameterIsPassedCorrectly()
{
var fakeDbSet = new Mock <DbSet <FakeEmployee> >();
var fakeDbModel = new FakeEmployee();
var mockDbContext = new Mock <ISalaryCalculatorDbContext>();
mockDbContext.Setup(mock => mock.Set <FakeEmployee>()).Returns(fakeDbSet.Object);
var repo = new SalaryCalculatorRepository <FakeEmployee>(mockDbContext.Object);
// Act
repo.Add(fakeDbModel);
// Assert
mockDbContext.Verify(mock => mock.Entry(It.IsAny <FakeEmployee>()), Times.Once());
}