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# frozen_string_literal: true
# rubocop:todo all
require 'spec_helper'
describe Mongo::Collection::View::Explainable do
let(:selector) do
{}
end
let(:options) do
{}
end
let(:view) do
Mongo::Collection::View.new(authorized_collection, selector, options)
end
before do
authorized_collection.delete_many
end
describe '#explain' do
shared_examples 'executes the explain' do
context '3.0+ server' do
min_server_fcv '3.0'
context 'not sharded' do
require_topology :single, :replica_set
it 'executes the explain' do
explain[:queryPlanner][:namespace].should == authorized_collection.namespace
end
end
context 'sharded' do
require_topology :sharded
context 'pre-3.2 server' do
max_server_version '3.0'
it 'executes the explain' do
skip 'https://jira.mongodb.org/browse/RUBY-3399'
explain[:queryPlanner][:parsedQuery].should be_a(Hash)
end
end
context '3.2+ server' do
min_server_fcv '3.2'
it 'executes the explain' do
skip 'https://jira.mongodb.org/browse/RUBY-3399'
explain[:queryPlanner][:mongosPlannerVersion].should == 1
end
end
end
end
context '2.6 server' do
max_server_version '2.6'
it 'executes the explain' do
explain[:cursor].should == 'BasicCursor'
end
end
end
context 'without arguments' do
let(:explain) do
view.explain
end
include_examples 'executes the explain'
end
context 'with verbosity argument' do
let(:explain) do
view.explain(verbosity: verbosity)
end
shared_examples 'triggers server error' do
# 3.0 does not produce the error.
min_server_fcv '3.2'
it 'triggers server error' do
lambda do
explain
end.should raise_error(Mongo::Error::OperationFailure, /verbosity string must be|value .* for field .*verbosity.* is not a valid value/)
end
end
context 'valid symbol value' do
let(:verbosity) { :query_planner }
include_examples 'executes the explain'
end
context 'valid string value' do
let(:verbosity) { 'executionStats' }
include_examples 'executes the explain'
end
context 'invalid symbol value' do
let(:verbosity) { :bogus }
include_examples 'triggers server error'
end
context 'invalid string value' do
let(:verbosity) { 'bogus' }
include_examples 'triggers server error'
end
end
end
end
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