TextInput::max_length should be in code units, not bytes

1 files changed, 49 insertions, 0 deletions

diff --git a/tests/unit/script/textinput.rs b/tests/unit/script/textinput.rs
index f5ee2feeb35..318612e64af 100644
--- a/tests/unit/script/textinput.rs
+++ b/tests/unit/script/textinput.rs
@@ -118,6 +118,55 @@ fn test_single_line_textinput_with_max_length_doesnt_allow_appending_characters_
 }
 
 #[test]
+fn test_single_line_textinput_with_max_length_multibyte() {
+    let mut textinput = TextInput::new(
+        Lines::Single,
+        DOMString::from(""),
+        DummyClipboardContext::new(""),
+        Some(2)
+    );
+
+    textinput.insert_char('á');
+    assert_eq!(textinput.get_content(), "á");
+    textinput.insert_char('é');
+    assert_eq!(textinput.get_content(), "áé");
+    textinput.insert_char('i');
+    assert_eq!(textinput.get_content(), "áé");
+}
+
+#[test]
+fn test_single_line_textinput_with_max_length_multi_code_unit() {
+    let mut textinput = TextInput::new(
+        Lines::Single,
+        DOMString::from(""),
+        DummyClipboardContext::new(""),
+        Some(3)
+    );
+
+    textinput.insert_char('\u{10437}');
+    assert_eq!(textinput.get_content(), "\u{10437}");
+    textinput.insert_char('\u{10437}');
+    assert_eq!(textinput.get_content(), "\u{10437}");
+    textinput.insert_char('x');
+    assert_eq!(textinput.get_content(), "\u{10437}x");
+    textinput.insert_char('x');
+    assert_eq!(textinput.get_content(), "\u{10437}x");
+}
+
+#[test]
+fn test_single_line_textinput_with_max_length_inside_char() {
+    let mut textinput = TextInput::new(
+        Lines::Single,
+        DOMString::from("\u{10437}"),
+        DummyClipboardContext::new(""),
+        Some(1)
+    );
+
+    textinput.insert_char('x');
+    assert_eq!(textinput.get_content(), "\u{10437}");
+}
+
+#[test]
 fn test_single_line_textinput_with_max_length_doesnt_allow_appending_characters_after_max_length_is_reached() {
     let mut textinput = TextInput::new(
         Lines::Single,