From 4bb5c38eb609907d024553131f50fd9e2bb8f1a7 Mon Sep 17 00:00:00 2001
From: hirokinoue <70567194+hirokinoue@users.noreply.github.com>
Date: Fri, 29 Apr 2022 00:52:37 +0900
Subject: [PATCH] add test case for usort()

---
 tests/ArrayFunctionCallTest.php | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/tests/ArrayFunctionCallTest.php b/tests/ArrayFunctionCallTest.php
index 69bcf140b2c..8ab3396a6de 100644
--- a/tests/ArrayFunctionCallTest.php
+++ b/tests/ArrayFunctionCallTest.php
@@ -1809,10 +1809,14 @@ function getCharPairs(string $line) : array {
             ],
             'usort' => [
                 '<?php
+                    function baz (int $a, int $b): int { return $a <=> $b; }
                     $array = ["foo" => 123, "bar" => 456];
-                    usort($array, function (int $a, int $b) { return $a <=> $b; });',
+                    usort($array, "baz");
+                    $emptyArray = [];
+                    usort($emptyArray, "baz");',
                 'assertions' => [
-                    '$array' => 'list<int>',
+                    '$array' => 'non-empty-list<int>',
+                    '$emptyArray' => 'list<empty>',
                 ],
             ],
             'closureParamConstraintsMet' => [