public void ModeAggregator()
{
Func <object, string, object> getVal = (r, f) => {
return(r);
};
var testInputs = new IEnumerable[] {
new int[] { 1, 2, 2, 3, 4, 7, 9 },
new int[] { 2, 7, 4, 7, 3, 5, 10, 3, 2, 7, 7, 3 },
new int[] { 2, 2, 1, 1 },
new int[] { 1, 2, 2, 1 }, // in PivotData impl max value is used in case of single-mode to guarantee determinate result
new int[] { 1, 2, 3 },
new string[] { "a", "b", "a", "c" }
};
var expectedOutputs = new object[] {
2,
7,
2,
2,
null,
"a"
};
for (int i = 0; i < testInputs.Length; i++)
{
var input = testInputs[i];
var expectedOutput = expectedOutputs[i];
var mode = new ModeAggregator("f", false);
foreach (var entry in input)
{
mode.Push(entry, getVal);
}
Assert.Equal(expectedOutput, mode.Value);
}
// multi-mode test
var multiMode = new ModeAggregator("f", true);
foreach (var entry in new int[] { 1, 3, 2, 2, 3 })
{
multiMode.Push(entry, getVal);
}
var mmVal = multiMode.Value as object[];
Assert.Equal(2, mmVal.Length);
Assert.Equal(2, mmVal[0]);
Assert.Equal(3, mmVal[1]);
}
public void ModeAggregator_Merge()
{
Func <object, string, object> getVal = (r, f) => {
return(r);
};
var mode1 = new ModeAggregator("f", false);
foreach (var entry in new int[] { 1, 3, 2, 2, 3 })
{
mode1.Push(entry, getVal);
}
var mode2 = new ModeAggregator("f", false);
foreach (var entry in new int[] { 4, 2, 1 })
{
mode2.Push(entry, getVal);
}
mode1.Merge(mode2);
Assert.Equal(2, mode1.Value);
Assert.Equal(8, (int)mode1.Count);
}
