public void Compute_Null_Input()
{
ICheckSumService service = new CheckSumService();
var result = service.Compute(null);
Assert.Equal(0, result);
}
public void Compute_Null_Rows_Are_Not_Processed()
{
ICheckSumService service = new CheckSumService();
IList <IList <int> > input = new List <IList <int> >()
{
new List <int>()
{
10, 7, 3
}, // High: 10, Low: 3, RowChecksum: 10 - 3 = 7
null,
new List <int>()
{
45, 19, 63
} // High: 63, Low: 19, RowChecksum: 63 - 19 = 44
};
var result = service.Compute(input);
Assert.Equal(51, result);
}
public void Compute_Performs_Sum_Of_High_Low_Differences()
{
ICheckSumService service = new CheckSumService();
IList <IList <int> > input = new List <IList <int> >()
{
new List <int>()
{
5, 1, 9, 5
}, // High: 9, Low: 1, RowChecksum: 9 - 1 = 8
new List <int>()
{
7, 5, 3
}, // High: 7, Low: 3, RowChecksum: 7 - 3 = 4
new List <int>()
{
2, 4, 6, 8
} // High: 8, Low: 2, RowChecksum: 8 - 2 = 6
};
var result = service.Compute(input);
Assert.Equal(18, result); // 8 + 4 + 6
}
public void Compute_One_Entry_Rows()
{
ICheckSumService service = new CheckSumService();
IList <IList <int> > input = new List <IList <int> >()
{
new List <int>()
{
5
},
new List <int>()
{
7
},
new List <int>()
{
2
}
};
var result = service.Compute(input);
Assert.Equal(0, result);
}
