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defmodule ViewPaginationTest do
use CouchTestCase
@moduletag :view_pagination
@moduletag kind: :single_node
@moduledoc """
Integration tests for pagination.
This is a port of the view_pagination.js test suite.
"""
@tag :with_db
test "basic view pagination", context do
db_name = context[:db_name]
docs = make_docs(0..99)
bulk_save(db_name, docs)
query_function = "function(doc) { emit(doc.integer, null); }"
0..99
|> Enum.filter(fn number -> rem(number, 10) === 0 end)
|> Enum.each(fn i ->
query_options = %{"startkey" => i, "startkey_docid" => i, limit: 10}
result = query(db_name, query_function, nil, query_options)
assert result["total_rows"] === length(docs)
assert length(result["rows"]) === 10
assert result["offset"] === i
Enum.each(0..9, &assert(Enum.at(result["rows"], &1)["key"] === &1 + i))
end)
end
@tag :with_db
test "aliases start_key and start_key_doc_id should work", context do
db_name = context[:db_name]
docs = make_docs(0..99)
bulk_save(db_name, docs)
query_function = "function(doc) { emit(doc.integer, null); }"
0..99
|> Enum.filter(fn number -> rem(number, 10) === 0 end)
|> Enum.each(fn i ->
query_options = %{"start_key" => i, "start_key_docid" => i, limit: 10}
result = query(db_name, query_function, nil, query_options)
assert result["total_rows"] === length(docs)
assert length(result["rows"]) === 10
assert result["offset"] === i
Enum.each(0..9, &assert(Enum.at(result["rows"], &1)["key"] === &1 + i))
end)
end
@tag :with_db
test "descending view pagination", context do
db_name = context[:db_name]
docs = make_docs(0..99)
bulk_save(db_name, docs)
query_function = "function(doc) { emit(doc.integer, null); }"
100..0
|> Enum.filter(fn number -> rem(number, 10) === 0 end)
|> Enum.map(&(&1 - 1))
|> Enum.filter(&(&1 > 0))
|> Enum.each(fn i ->
query_options = %{
"startkey" => i,
"startkey_docid" => i,
limit: 10,
descending: true
}
result = query(db_name, query_function, nil, query_options)
assert result["total_rows"] === length(docs)
assert length(result["rows"]) === 10
assert result["offset"] === length(docs) - i - 1
Enum.each(0..9, &assert(Enum.at(result["rows"], &1)["key"] === i - &1))
end)
end
@tag :with_db
test "descending=false parameter should just be ignored", context do
db_name = context[:db_name]
docs = make_docs(0..99)
bulk_save(db_name, docs)
query_function = "function(doc) { emit(doc.integer, null); }"
0..99
|> Enum.filter(fn number -> rem(number, 10) === 0 end)
|> Enum.each(fn i ->
query_options = %{
"start_key" => i,
"start_key_docid" => i,
limit: 10,
descending: false
}
result = query(db_name, query_function, nil, query_options)
assert result["total_rows"] === length(docs)
assert length(result["rows"]) === 10
assert result["offset"] === i
Enum.each(0..9, &assert(Enum.at(result["rows"], &1)["key"] === &1 + i))
end)
end
@tag :with_db
test "endkey document id", context do
db_name = context[:db_name]
docs = make_docs(0..99)
bulk_save(db_name, docs)
query_function = "function(doc) { emit(null, null); }"
query_options = %{
"startkey" => :null,
"startkey_docid" => 1,
"endkey" => :null,
"endkey_docid" => 40,
}
result = query(db_name, query_function, nil, query_options)
test_end_key_doc_id(result, docs)
end
@tag :with_db
test "endkey document id, but with end_key_doc_id alias", context do
db_name = context[:db_name]
docs = make_docs(0..99)
bulk_save(db_name, docs)
query_function = "function(doc) { emit(null, null); }"
query_options = %{
"start_key" => :null,
"start_key_doc_id" => 1,
"end_key" => :null,
"end_key_doc_id" => 40,
}
result = query(db_name, query_function, nil, query_options)
test_end_key_doc_id(result, docs)
end
defp test_end_key_doc_id(query_result, docs) do
assert length(query_result["rows"]) === 35
assert query_result["total_rows"] === length(docs)
assert query_result["offset"] === 1
assert Enum.at(query_result["rows"], 0)["id"] === "1"
assert Enum.at(query_result["rows"], 1)["id"] === "10"
assert Enum.at(query_result["rows"], 2)["id"] === "11"
assert Enum.at(query_result["rows"], 3)["id"] === "12"
assert Enum.at(query_result["rows"], 4)["id"] === "13"
assert Enum.at(query_result["rows"], 5)["id"] === "14"
assert Enum.at(query_result["rows"], 6)["id"] === "15"
assert Enum.at(query_result["rows"], 7)["id"] === "16"
assert Enum.at(query_result["rows"], 8)["id"] === "17"
assert Enum.at(query_result["rows"], 9)["id"] === "18"
assert Enum.at(query_result["rows"], 10)["id"] === "19"
assert Enum.at(query_result["rows"], 11)["id"] === "2"
assert Enum.at(query_result["rows"], 12)["id"] === "20"
assert Enum.at(query_result["rows"], 13)["id"] === "21"
assert Enum.at(query_result["rows"], 14)["id"] === "22"
assert Enum.at(query_result["rows"], 15)["id"] === "23"
assert Enum.at(query_result["rows"], 16)["id"] === "24"
assert Enum.at(query_result["rows"], 17)["id"] === "25"
assert Enum.at(query_result["rows"], 18)["id"] === "26"
assert Enum.at(query_result["rows"], 19)["id"] === "27"
assert Enum.at(query_result["rows"], 20)["id"] === "28"
assert Enum.at(query_result["rows"], 21)["id"] === "29"
assert Enum.at(query_result["rows"], 22)["id"] === "3"
assert Enum.at(query_result["rows"], 23)["id"] === "30"
assert Enum.at(query_result["rows"], 24)["id"] === "31"
assert Enum.at(query_result["rows"], 25)["id"] === "32"
assert Enum.at(query_result["rows"], 26)["id"] === "33"
assert Enum.at(query_result["rows"], 27)["id"] === "34"
assert Enum.at(query_result["rows"], 28)["id"] === "35"
assert Enum.at(query_result["rows"], 29)["id"] === "36"
assert Enum.at(query_result["rows"], 30)["id"] === "37"
assert Enum.at(query_result["rows"], 31)["id"] === "38"
assert Enum.at(query_result["rows"], 32)["id"] === "39"
assert Enum.at(query_result["rows"], 33)["id"] === "4"
assert Enum.at(query_result["rows"], 34)["id"] === "40"
end
end
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