public void ShouldGetTheHiValueFromRepository()
{
// Arrange
var mock = new Mock <IHiLoRepository>();
mock.Setup(m => m.GetNextHi()).Returns(1);
var generator = new HiLoGenerator(mock.Object, 10);
// Act
generator.GetKey();
// Assert
mock.Verify(m => m.GetNextHi(), Times.Once());
}
public void ShouldGetTheFirstKeyFromTheHiValue()
{
// Arrange
var mock = new Mock <IHiLoRepository>();
mock.Setup(m => m.GetNextHi()).Returns(1);
var generator = new HiLoGenerator(mock.Object, 10);
// Act
long key = generator.GetKey();
// Assert
Assert.Equal(10, key);
}
public void ShouldGetTheHiValueFromRepositoryTwiceFor11KeyGenerationsWith10AsMaxLo()
{
// Arrange
var mock = new Mock <IHiLoRepository>();
mock.Setup(m => m.GetNextHi()).Returns(1);
var generator = new HiLoGenerator(mock.Object, 10);
// Act
for (int i = 1; i <= 11; i++)
{
generator.GetKey();
}
// Assert
mock.Verify(m => m.GetNextHi(), Times.Exactly(2));
}
public void ShouldFailCreatingInstanceWith0AsMaxLo()
{
// Arrange
var mock = new Mock <IHiLoRepository>();
try
{
// Act
var generator = new HiLoGenerator(mock.Object, 0);
// Assert
throw new XunitException();
}
catch (ArgumentException)
{
}
}
public void ShouldFailCreatingInstanceWithNullAsRepository()
{
// Arrange
IHiLoRepository repository = null;
try
{
// Act
var generator = new HiLoGenerator(repository, 0);
// Assert
throw new XunitException();
}
catch (ArgumentException)
{
}
}
public void ShouldGetDifferentKeysForEachCall()
{
// Arrange
List <long> keys = new List <long>();
int hi = 1;
var mock = new Mock <IHiLoRepository>();
mock.Setup(m => m.GetNextHi()).Returns(() => hi++);
var generator = new HiLoGenerator(mock.Object, 10);
// Act
for (int i = 1; i <= 30; i++)
{
long key = generator.GetKey();
// Assert
Assert.DoesNotContain(key, keys);
keys.Add(key);
}
}
public void ShouldGetThe11thKeyFromTheHiValue()
{
// Arrange
int hi = 1;
var mock = new Mock <IHiLoRepository>();
mock.Setup(m => m.GetNextHi()).Returns(() => hi++);
var generator = new HiLoGenerator(mock.Object, 10);
// Act
for (int i = 1; i <= 10; i++)
{
generator.GetKey();
}
long key = generator.GetKey();
// Assert
Assert.Equal(20, key);
}
