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defmodule ViewCollationTest do
use CouchTestCase
@moduledoc """
Test CouchDB View Collation Behavior
This is a port of the view_collation.js suite
"""
@values [
# Special values sort before all other types
:null,
false,
true,
# Then numbers
1,
2,
3.0,
4,
# Then text, case sensitive
"a",
"A",
"aa",
"b",
"B",
"ba",
"bb",
# Then arrays, compared element by element until different.
# Longer arrays sort after their prefixes
["a"],
["b"],
["b", "c"],
["b", "c", "a"],
["b", "d"],
["b", "d", "e"],
# Then objects, compared each key value in the list until different.
# Larger objects sort after their subset objects
{[a: 1]},
{[a: 2]},
{[b: 1]},
{[b: 2]},
# Member order does matter for collation
{[b: 2, a: 1]},
{[b: 2, c: 2]}
]
setup_all do
db_name = random_db_name()
{:ok, _} = create_db(db_name)
on_exit(fn -> delete_db(db_name) end)
{docs, _} =
Enum.flat_map_reduce(@values, 1, fn value, idx ->
doc = %{:_id => Integer.to_string(idx), :foo => value}
{[doc], idx + 1}
end)
resp = Couch.post("/#{db_name}/_bulk_docs", body: %{:docs => docs})
Enum.each(resp.body, &assert(&1["ok"]))
map_fun = "function(doc) { emit(doc.foo, null); }"
map_doc = %{:views => %{:foo => %{:map => map_fun}}}
resp = Couch.put("/#{db_name}/_design/foo", body: map_doc)
assert resp.body["ok"]
{:ok, [db_name: db_name]}
end
test "ascending collation order", context do
retry_until(fn ->
resp = Couch.get(url(context))
pairs = Enum.zip(resp.body["rows"], @values)
Enum.each(pairs, fn {row, value} ->
assert row["key"] == convert(value)
end)
end)
end
test "descending collation order", context do
retry_until(fn ->
resp = Couch.get(url(context), query: %{"descending" => "true"})
pairs = Enum.zip(resp.body["rows"], Enum.reverse(@values))
Enum.each(pairs, fn {row, value} ->
assert row["key"] == convert(value)
end)
end)
end
test "key query option", context do
Enum.each(@values, fn value ->
retry_until(fn ->
resp = Couch.get(url(context), query: %{:key => :jiffy.encode(value)})
assert length(resp.body["rows"]) == 1
assert Enum.at(resp.body["rows"], 0)["key"] == convert(value)
end)
end)
end
test "inclusive_end=true", context do
query = %{:endkey => :jiffy.encode("b"), :inclusive_end => true}
resp = Couch.get(url(context), query: query)
assert Enum.at(resp.body["rows"], -1)["key"] == "b"
query = Map.put(query, :descending, true)
resp = Couch.get(url(context), query: query)
assert Enum.at(resp.body["rows"], -1)["key"] == "b"
end
test "inclusive_end=false", context do
query = %{:endkey => :jiffy.encode("b"), :inclusive_end => false}
resp = Couch.get(url(context), query: query)
assert Enum.at(resp.body["rows"], -1)["key"] == "aa"
query = Map.put(query, :descending, true)
resp = Couch.get(url(context), query: query)
assert Enum.at(resp.body["rows"], -1)["key"] == "B"
query = %{
:endkey => :jiffy.encode("b"),
:endkey_docid => 11,
:inclusive_end => false
}
resp = Couch.get(url(context), query: query)
assert Enum.at(resp.body["rows"], -1)["key"] == "aa"
query = Map.put(query, :endkey_docid, 12)
resp = Couch.get(url(context), query: query)
assert Enum.at(resp.body["rows"], -1)["key"] == "b"
end
def url(context) do
"/#{context[:db_name]}/_design/foo/_view/foo"
end
def convert(value) do
:jiffy.decode(:jiffy.encode(value), [:return_maps])
end
end
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