public void Index_NotExistedKey_ShouldReturnEmpty()
{
var lookup1 = new List <KeyValuePair <string, int> >().ToLookup(x => x.Key, x => x.Value);
var lookup2 = new List <KeyValuePair <string, int> >().ToLookup(x => x.Key, x => x.Value);
var mergedLookup = new MergedLookup <string, int>(new ILookup <string, int>[] { lookup1, lookup2 });
Assert.True(mergedLookup["some"].Count() == 0);
}
public void Index_ExistedKeyInBothLookup_ShouldReturnMerged()
{
var lookup1 = new List <KeyValuePair <string, int> >
{
new KeyValuePair <string, int>("from1to5", 1),
new KeyValuePair <string, int>("from1to5", 2),
}.ToLookup(x => x.Key, x => x.Value);
var lookup2 = new List <KeyValuePair <string, int> >
{
new KeyValuePair <string, int>("from1to5", 3),
new KeyValuePair <string, int>("from1to5", 4),
new KeyValuePair <string, int>("from1to5", 5),
}.ToLookup(x => x.Key, x => x.Value);
var mergedLookup = new MergedLookup <string, int>(new ILookup <string, int>[] { lookup1, lookup2 });
Assert.True(mergedLookup["from1to5"].Count() == 5);
Assert.True(mergedLookup["from1to5"].SequenceEqual(Enumerable.Range(1, 5)));
}
