From 985ae80d7f82cef7c273fae953c73f8bd909ebef Mon Sep 17 00:00:00 2001
From: Anders Betts <anders.betts@gmail.com>
Date: Sat, 19 Sep 2026 23:17:45 +0200
Subject: tui: backspace deletes backwards while editing; esc restores the
 value

---
 tests/test_tui.c | 49 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 49 insertions(+)

(limited to 'tests')

diff --git a/tests/test_tui.c b/tests/test_tui.c
index f4405b4..93aece0 100644
--- a/tests/test_tui.c
+++ b/tests/test_tui.c
@@ -104,6 +104,42 @@ static void test_ledit(void)
     CHECK(tui_le_key(&e, KEY_UP) == 0); /* not an editing key */
 }
 
+static void test_field_fresh(void)
+{
+    char buf[16];
+    size_t pos = (size_t)-1;
+    int fresh = 1;
+
+    /* fresh + backspace deletes the last character, it does not clear */
+    snprintf(buf, sizeof buf, "abc");
+    CHECK(tui_field_edit(buf, sizeof buf, &pos, KEY_BACKSPACE, &fresh));
+    CHECK(strcmp(buf, "ab") == 0);
+
+    /* the first printable still replaces the whole prefilled value */
+    snprintf(buf, sizeof buf, "abc");
+    pos = (size_t)-1;
+    fresh = 1;
+    CHECK(tui_field_edit(buf, sizeof buf, &pos, 'x', &fresh));
+    CHECK(strcmp(buf, "x") == 0);
+
+    /* movement keeps the content, clears fresh; the next printable is
+       inserted at the caret */
+    snprintf(buf, sizeof buf, "abc");
+    pos = (size_t)-1;
+    fresh = 1;
+    CHECK(tui_field_edit(buf, sizeof buf, &pos, KEY_LEFT, &fresh));
+    CHECK(strcmp(buf, "abc") == 0 && pos == 2 && fresh == 0);
+    CHECK(tui_field_edit(buf, sizeof buf, &pos, 'x', &fresh));
+    CHECK(strcmp(buf, "abxc") == 0);
+
+    /* fresh + delete removes the character at the caret, no clear */
+    snprintf(buf, sizeof buf, "abc");
+    pos = 0;
+    fresh = 1;
+    CHECK(tui_field_edit(buf, sizeof buf, &pos, KEY_DC, &fresh));
+    CHECK(strcmp(buf, "bc") == 0);
+}
+
 static void date_feed(char *buf, size_t cap, const char *digits)
 {
     size_t pos = (size_t)-1;
@@ -139,6 +175,18 @@ static void test_date_field(void)
     fresh = 0;
     tui_date_field_edit(buf, sizeof buf, &pos, '9', &fresh);
     CHECK(strcmp(buf, "2026-06-09") == 0);
+
+    /* fresh + backspace deletes the last digit; fresh + ^U clears */
+    snprintf(buf, sizeof buf, "2026-06-04");
+    pos = (size_t)-1;
+    fresh = 1;
+    CHECK(tui_date_field_edit(buf, sizeof buf, &pos, KEY_BACKSPACE, &fresh));
+    CHECK(strcmp(buf, "2026-06-0") == 0);
+    snprintf(buf, sizeof buf, "2026-06-04");
+    pos = (size_t)-1;
+    fresh = 1;
+    CHECK(tui_date_field_edit(buf, sizeof buf, &pos, 21, &fresh));
+    CHECK(strcmp(buf, "") == 0);
 }
 
 static void nav_init(struct tui_list_nav *v, int n)
@@ -479,6 +527,7 @@ int main(void)
     test_formats();
     test_parse_kr();
     test_ledit();
+    test_field_fresh();
     test_date_field();
     test_styles();
     test_markup();
-- 
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