From c997c6082ec2e47244ace87781d29c4766938197 Mon Sep 17 00:00:00 2001
From: Christian Schneider
Date: Thu, 3 Dec 2020 16:08:31 +0100
Subject: Add some tests for it::substr() behaviour we rely on which was broken
 for some PHP 8 Beta versions

---
 test/it.t | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'test')

diff --git a/test/it.t b/test/it.t
index 49d5854..a3abf32 100755
--- a/test/it.t
+++ b/test/it.t
@@ -381,6 +381,10 @@ is(it::ucwords('foo bär über'), 'Foo Bär Über');
 # it::substr_replace
 is(it::substr_replace('abcdefgh', 'xyz', 2, 4), substr_replace('abcdefgh', 'xyz', 2, 4), 'it::substr_replace the same as substr_replace for ascii');
 is(it::substr_replace('✔☯♥', '☃☃', 1, 1), '✔☃☃♥', 'it::substr_replace for utf-8');
+is(it::substr_replace('', 'xyz', 0, 0), substr_replace('', 'xyz', 0, 0), 'it::substr_replace with empty haystack the same as substr_replace');
+is(it::substr_replace('abc', 'xyz', 0, 2), substr_replace('abc', 'xyz', 0, 2), 'it::substr_replace replacing to end of haystack');
+is(it::substr_replace('abc', 'xyz', 0, 10), substr_replace('abc', 'xyz', 0, 10), 'it::substr_replace replacing past end of haystack');
+is(it::substr_replace('abcdefgh', 'xyz', 10, 4), substr_replace('abcdefgh', 'xyz', 10, 4), 'it::substr_replace outside of string');
 
 is(grapheme_strlen("\xc1"), null, "need grapheme_strlen side effect for any2utf8");
 
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