From b39bdaaa0160ac9545a16d88d363731adbdc8b73 Mon Sep 17 00:00:00 2001
From: Adam Saponara <as@php.net>
Date: Thu, 6 Jan 2022 19:31:58 -0500
Subject: [PATCH] add test for f715214

---
 termbox.h                            | 11 +++++--
 tests/test_large_input/expected.ansi | 24 +++++++++++++++
 tests/test_large_input/test.php      | 46 ++++++++++++++++++++++++++++
 3 files changed, 79 insertions(+), 2 deletions(-)
 create mode 100644 tests/test_large_input/expected.ansi
 create mode 100755 tests/test_large_input/test.php

diff --git a/termbox.h b/termbox.h
index 0e4a294..033bd6f 100644
--- a/termbox.h
+++ b/termbox.h
@@ -256,6 +256,13 @@ extern "C" { // __ffi_strip
 #define TB_OPT_PRINTF_BUF 4096
 #endif
 
+/* Define this to set the size of the read buffer used when reading
+ * from the tty
+ */
+#ifndef TB_OPT_READ_BUF
+#define TB_OPT_READ_BUF 64
+#endif
+
 /* Define this for limited back compat with termbox v1 */
 #ifdef TB_OPT_V1_COMPAT
 #define tb_change_cell          tb_set_cell
@@ -2058,7 +2065,7 @@ static int update_term_size_via_esc() {
         return TB_ERR_RESIZE_POLL;
     }
 
-    char buf[64];
+    char buf[TB_OPT_READ_BUF];
     ssize_t read_rv = read(global.rfd, buf, sizeof(buf) - 1);
     if (read_rv < 1) {
         global.last_errno = errno;
@@ -2337,7 +2344,7 @@ static const char *get_terminfo_string(int16_t str_offsets_pos,
 
 static int wait_event(struct tb_event *event, int timeout) {
     int rv;
-    char buf[64];
+    char buf[TB_OPT_READ_BUF];
 
     memset(event, 0, sizeof(*event));
     if_ok_return(rv, extract_event(event));
diff --git a/tests/test_large_input/expected.ansi b/tests/test_large_input/expected.ansi
new file mode 100644
index 0000000..7a50277
--- /dev/null
+++ b/tests/test_large_input/expected.ansi
@@ -0,0 +1,24 @@
+#5up_arrow_count=22
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/tests/test_large_input/test.php b/tests/test_large_input/test.php
new file mode 100755
index 0000000..38dd898
--- /dev/null
+++ b/tests/test_large_input/test.php
@@ -0,0 +1,46 @@
+<?php
+declare(strict_types=1);
+
+// init termbox with a "fake" tty backed by memfds
+$libc = FFI::cdef(
+    'int memfd_create(const char *name, unsigned int flags);' .
+    'int close(int fd);'
+);
+$ttyin = $libc->memfd_create('ttyin', 0);
+$ttyout = $libc->memfd_create('ttyout', 0);
+$test->ffi->tb_init_rwfd($ttyin, $ttyout);
+
+// we're going to send a bunch of up-arrow escape sequences to termbox via our
+// fake tty, and then ensure that termbox emits the expected up-arrow events
+// via `tb_peek_event`. we will send enough data to fill up the read buffer
+// (TB_OPT_READ_BUF).
+$up_arrow = "\x1bOA";
+$read_buf_size = $test->defines['TB_OPT_READ_BUF'];
+$num_up_arrows = (int)ceil($read_buf_size / strlen($up_arrow));
+$input_data = str_repeat($up_arrow, $num_up_arrows);
+$fttyin = fopen("php://fd/$ttyin", 'w');
+$nbytes = fwrite($fttyin, $input_data);
+fseek($fttyin, strlen($input_data) * -1, SEEK_CUR);
+
+// count how many up arrow events termbox emits
+$up_arrow_count = 0;
+$test->ffi->tb_set_input_mode($test->defines['TB_INPUT_ALT']);
+$event = $test->ffi->new('struct tb_event');
+do {
+    $rv = $test->ffi->tb_peek_event(FFI::addr($event), 1000);
+    if ($rv == 0 && $event->key === $test->defines['TB_KEY_ARROW_UP']) {
+        $up_arrow_count += 1;
+    }
+} while ($rv == 0);
+
+// close fake termbox setup
+fclose($fttyin);
+$libc->close($ttyin);
+$libc->close($ttyout);
+$test->ffi->tb_shutdown();
+
+// display up_arrow_count
+$test->ffi->tb_init();
+$test->ffi->tb_printf(0, 0, 0, 0, "up_arrow_count=%d", $up_arrow_count);
+$test->ffi->tb_present();
+$test->screencap();
-- 
2.39.5