public void TestContructorThrowsExceptionUponEmptyItemList()
{
Assert.Throws <ArgumentNullException>(() => {
var en = new MultipleBatchEnumerator <int, int>(
new IQueryable <int> [0],
q => q
);
}, "Items list cannot be empty");
}
public void TestContructorThrowsExceptionUponNullSelectedResponse()
{
Assert.Throws <ArgumentNullException>(() => {
var en = new MultipleBatchEnumerator <int, int>(
new[] {
new [] { 1 }.AsQueryable()
},
null
);
}, "Selected Response cannot be empty");
}
public void TestMultipleBatchEnumeratorFetchesCorrectBatchItems3()
{
var itemList = new[] {
new [] { 1, 2, 3 }.AsQueryable(),
new [] { 4, 5, 6, }.AsQueryable(),
new [] { 7, 8, 9, 10, 11, 12 }.AsQueryable(),
new int[] { }.AsQueryable(),
new [] { 12, 13, 14, 15, 16, 17, 18, }.AsQueryable(),
new [] { 17, 18, 19, 20, 21, 22, 24 }.AsQueryable(),
new int[] { }.AsQueryable(),
new int[] { 42 }.AsQueryable(),
};
var en = new MultipleBatchEnumerator <int, int>(
itemList,
q => q,
qq => qq.OrderBy(q => q),
null,
5
);
Assert.AreEqual(0, en.BatchNumber);
Assert.True(en.MoveNext());
Assert.AreEqual(5, en.Current.Count());
Assert.AreEqual(new[] { 1, 2, 3, 4, 5 }, en.Current);
Assert.AreEqual(1, en.BatchNumber);
Assert.True(en.MoveNext());
Assert.AreEqual(5, en.Current.Count());
Assert.AreEqual(new[] { 6, 7, 8, 9, 10 }, en.Current);
Assert.AreEqual(2, en.BatchNumber);
Assert.True(en.MoveNext());
Assert.AreEqual(5, en.Current.Count());
Assert.AreEqual(new[] { 11, 12, 12, 13, 14 }, en.Current);
Assert.AreEqual(3, en.BatchNumber);
Assert.True(en.MoveNext());
Assert.AreEqual(5, en.Current.Count());
Assert.AreEqual(new[] { 15, 16, 17, 18, 17 }, en.Current);
Assert.AreEqual(4, en.BatchNumber);
Assert.True(en.MoveNext());
Assert.AreEqual(5, en.Current.Count());
Assert.AreEqual(new[] { 18, 19, 20, 21, 22 }, en.Current);
Assert.AreEqual(5, en.BatchNumber);
Assert.True(en.MoveNext());
Assert.AreEqual(2, en.Current.Count());
Assert.AreEqual(new[] { 24, 42 }, en.Current);
Assert.AreEqual(6, en.BatchNumber);
Assert.False(en.MoveNext());
}
