public void should_connect_to_database()
{
// arrange
var db = new Mock <IDatabase>();
var output = new Mock <ISystemOutput>();
// act
DataPrinter.PrintData(db.Object, output.Object);
// assert
db.Verify(foo => foo.Connect(), Times.Once());
}
public void should_output_fetched_data()
{
// arrange
string[] persons = { "Tom", "Anna", "Simon", "Nina" };
var db = new Mock <IDatabase>();
var output = new Mock <ISystemOutput>();
db.Setup(d => d.Fetch("select name from persons")).Returns(persons.ToArray());
// act
DataPrinter.PrintData(db.Object, output.Object);
// assert
foreach (var person in persons)
{
output.Verify(o => o.Print(person), Times.Once);
}
output.VerifyNoOtherCalls();
}
public void should_connect_to_database_before_fetching_data()
{
// arrange
var connected = false;
var db = new Mock <IDatabase>();
var output = new Mock <ISystemOutput>();
db.Setup(d => d.Connect()).Callback(() => connected = true);
db.Setup(d => d.Fetch(It.IsAny <string>())).Callback(() => { if (!connected)
{
Assert.Fail("Fetched before connecting!");
}
});
// act
DataPrinter.PrintData(db.Object, output.Object);
// assert
db.Verify(foo => foo.Connect());
db.Verify(foo => foo.Fetch(It.IsAny <string>()));
}