diff --git a/ext/readline/tests/readline_cli_auto_prepend.phpt b/ext/readline/tests/readline_cli_auto_prepend.phpt
new file mode 100644
index 000000000000..71d4477a7cde
--- /dev/null
+++ b/ext/readline/tests/readline_cli_auto_prepend.phpt
@@ -0,0 +1,30 @@
+--TEST--
+Interactive shell: auto_prepend_file is executed before input
+--EXTENSIONS--
+readline
+--SKIPIF--
+<?php
+if (!function_exists('proc_open')) die('skip proc_open() not available');
+?>
+--FILE--
+<?php
+$prepend = tempnam(sys_get_temp_dir(), 'readline_cli_prepend');
+file_put_contents($prepend, <<<'PHP'
+<?php
+echo "prepended\n";
+define('READLINE_CLI_PREPENDED', 'ok');
+readline_completion_function(static fn() => []);
+PHP);
+
+$php = getenv('TEST_PHP_EXECUTABLE_ESCAPED');
+$ini = getenv('TEST_PHP_EXTRA_ARGS');
+$descriptorspec = [['pipe', 'r'], STDOUT, STDERR];
+$proc = proc_open("$php $ini -d auto_prepend_file=" . escapeshellarg($prepend) . " -a", $descriptorspec, $pipes);
+fwrite($pipes[0], "echo READLINE_CLI_PREPENDED . \"\n\";\n");
+fwrite($pipes[0], "exit\n");
+fclose($pipes[0]);
+proc_close($proc);
+unlink($prepend);
+?>
+--EXPECTF--
+%AInteractive shell%Aprepended%Aok%A
diff --git a/ext/readline/tests/readline_cli_completion_readline.phpt b/ext/readline/tests/readline_cli_completion_readline.phpt
new file mode 100644
index 000000000000..fabcf59deba6
--- /dev/null
+++ b/ext/readline/tests/readline_cli_completion_readline.phpt
@@ -0,0 +1,39 @@
+--TEST--
+Interactive shell: default completion function
+--EXTENSIONS--
+readline
+--SKIPIF--
+<?php
+if (READLINE_LIB !== "readline") die('skip readline only');
+if (!function_exists('shell_exec')) die('skip shell_exec() not available');
+?>
+--FILE--
+<?php
+$php = getenv('TEST_PHP_EXECUTABLE_ESCAPED');
+$ini = getenv('TEST_PHP_EXTRA_ARGS');
+
+putenv('TERM=VT100');
+
+$code = <<<'PHP'
+$readline_cli_completion_variable = "variable\n";
+echo $readline_cli_completion_var	;
+#prec	3
+echo "precision=" . ini_get("precision") . "\n";
+function readline_cli_completion_function() { echo "function\n"; }
+readline_cli_completion_fun	);
+define('READLINE_CLI_COMPLETION_CONSTANT', "constant\n");
+echo READLINE_CLI_COMPLETION_CON	;
+class ReadlineCliCompletionClass {
+    public const COMPLETION_CLASS_CONSTANT = "class constant\n";
+    public static function completionMethod() { echo "method\n"; }
+}
+echo ReadlineCliCompletionCla	::class . "\n";
+echo ReadlineCliCompletionClass::COMPLETION_CLASS_CON	;
+ReadlineCliCompletionClass::completionM	);
+exit
+PHP;
+
+echo shell_exec("echo " . escapeshellarg($code) . " | $php $ini -a");
+?>
+--EXPECTF--
+%AInteractive shell%Avariable%Aprecision=3%Afunction%Aconstant%AReadlineCliCompletionClass%Aclass constant%Amethod%A
diff --git a/ext/readline/tests/readline_cli_long_input.phpt b/ext/readline/tests/readline_cli_long_input.phpt
new file mode 100644
index 000000000000..a74850aef2d4
--- /dev/null
+++ b/ext/readline/tests/readline_cli_long_input.phpt
@@ -0,0 +1,22 @@
+--TEST--
+Interactive shell: input buffer grows for long lines
+--EXTENSIONS--
+readline
+--SKIPIF--
+<?php
+if (!function_exists('proc_open')) die('skip proc_open() not available');
+?>
+--FILE--
+<?php
+$php = getenv('TEST_PHP_EXECUTABLE_ESCAPED');
+$ini = getenv('TEST_PHP_EXTRA_ARGS');
+$descriptorspec = [['pipe', 'r'], STDOUT, STDERR];
+$proc = proc_open("$php $ini -a", $descriptorspec, $pipes);
+$long = str_repeat('x', 5000);
+fwrite($pipes[0], 'echo strlen("' . $long . '") . "\n";' . "\n");
+fwrite($pipes[0], "exit\n");
+fclose($pipes[0]);
+proc_close($proc);
+?>
+--EXPECTF--
+%AInteractive shell%A5000%A
diff --git a/ext/readline/tests/readline_cli_multiline_states.phpt b/ext/readline/tests/readline_cli_multiline_states.phpt
new file mode 100644
index 000000000000..aebbcc112542
--- /dev/null
+++ b/ext/readline/tests/readline_cli_multiline_states.phpt
@@ -0,0 +1,33 @@
+--TEST--
+Interactive shell: multiline input states
+--EXTENSIONS--
+readline
+--SKIPIF--
+<?php
+if (!function_exists('proc_open')) die('skip proc_open() not available');
+?>
+--FILE--
+<?php
+$php = getenv('TEST_PHP_EXECUTABLE_ESCAPED');
+$ini = getenv('TEST_PHP_EXTRA_ARGS');
+$descriptorspec = [['pipe', 'r'], STDOUT, STDERR];
+$proc = proc_open("$php $ini -a", $descriptorspec, $pipes);
+
+fwrite($pipes[0], "\n");
+fwrite($pipes[0], "# comment without ini assignment\n");
+fwrite($pipes[0], "echo 'single \\\\ escape\n';\n");
+fwrite($pipes[0], "echo \"double \\\\ escape\n\";\n");
+fwrite($pipes[0], "echo strtoupper(\n\"paren\"\n);\n");
+fwrite($pipes[0], "echo 6 /\n2;\n");
+fwrite($pipes[0], "if (true) {\necho \"block\n\";\n}\n");
+fwrite($pipes[0], "// line comment\n");
+fwrite($pipes[0], "/*\n*/\necho \"comment\n\";\n");
+fwrite($pipes[0], "#[AllowDynamicProperties]\nclass ReadlineCliCoverageClass {}\n");
+fwrite($pipes[0], "echo \"attribute\n\";\n");
+fwrite($pipes[0], "if (true) ?>outside-\n<?php\n{\necho \"inside\n\";\n}\n");
+fwrite($pipes[0], "quit\n");
+fclose($pipes[0]);
+proc_close($proc);
+?>
+--EXPECTF--
+%AInteractive shell%Asingle%Adouble%APAREN%A3%Ablock%Acomment%Aattribute%Aoutside-%Ainside%A
diff --git a/ext/readline/tests/readline_cli_pager.phpt b/ext/readline/tests/readline_cli_pager.phpt
new file mode 100644
index 000000000000..79fbe37f7f73
--- /dev/null
+++ b/ext/readline/tests/readline_cli_pager.phpt
@@ -0,0 +1,22 @@
+--TEST--
+Interactive shell: output through cli.pager
+--EXTENSIONS--
+readline
+--SKIPIF--
+<?php
+if (!function_exists('proc_open')) die('skip proc_open() not available');
+if (PHP_OS_FAMILY === 'Windows') die('skip cat pager is not portable on Windows');
+?>
+--FILE--
+<?php
+$php = getenv('TEST_PHP_EXECUTABLE_ESCAPED');
+$ini = getenv('TEST_PHP_EXTRA_ARGS');
+$descriptorspec = [['pipe', 'r'], STDOUT, STDERR];
+$proc = proc_open("$php $ini -d cli.pager=cat -a", $descriptorspec, $pipes);
+fwrite($pipes[0], "echo \"pager output\n\";\n");
+fwrite($pipes[0], "quit\n");
+fclose($pipes[0]);
+proc_close($proc);
+?>
+--EXPECTF--
+%Apager output%A
diff --git a/ext/readline/tests/readline_cli_prompt.phpt b/ext/readline/tests/readline_cli_prompt.phpt
new file mode 100644
index 000000000000..dd46ca362860
--- /dev/null
+++ b/ext/readline/tests/readline_cli_prompt.phpt
@@ -0,0 +1,25 @@
+--TEST--
+Interactive shell: custom prompt escape sequences
+--EXTENSIONS--
+readline
+--SKIPIF--
+<?php
+if (READLINE_LIB !== "readline") die('skip readline only');
+if (!function_exists('proc_open')) die('skip proc_open() not available');
+?>
+--FILE--
+<?php
+$php = getenv('TEST_PHP_EXECUTABLE_ESCAPED');
+$ini = getenv('TEST_PHP_EXTRA_ARGS');
+$prompt = 'pre\\\\-\n-\t-\e-\v-\b-\>-\`-\q-' . "\xC3\xA9\xC3\xA9" . '-`echo "dyn";`-`-x ';
+$descriptorspec = [['pipe', 'r'], STDOUT, STDERR];
+$proc = proc_open("$php $ini -d " . escapeshellarg("cli.prompt=$prompt") . " -a", $descriptorspec, $pipes);
+fwrite($pipes[0], "if (true) {\n");
+fwrite($pipes[0], "echo \"prompt body\n\";\n");
+fwrite($pipes[0], "}\n");
+fwrite($pipes[0], "quit\n");
+fclose($pipes[0]);
+proc_close($proc);
+?>
+--EXPECTF--
+%AInteractive shell%Aprompt contains unsupported unicode characters%Adyn%Aprompt body%A