1 files changed, 28 insertions, 0 deletions
diff --git a/v_windows/v/vlib/builtin/utf8_test.v b/v_windows/v/vlib/builtin/utf8_test.v
new file mode 100644
index 0000000..46983f1
--- /dev/null
+++ b/v_windows/v/vlib/builtin/utf8_test.v
@@ -0,0 +1,28 @@
+fn test_utf8_char_len() {
+	assert utf8_char_len(`a`) == 1
+	println(utf8_char_len(`a`))
+	s := 'п'
+	assert utf8_char_len(s[0]) == 2
+}
+
+fn test_utf8_wide_char() {
+	$if msvc {
+		// TODO: make this test pass msvc too
+		return
+	}
+	r := `✔`
+	s := '✔'
+	println('r: $r')
+	println('s: $s')
+	rstr := r.str()
+	println('rstr: $rstr')
+	assert utf8_char_len(r) == 1
+	assert utf8_char_len(s[0]) == 3
+	assert s == rstr
+	val := rstr.str
+	unsafe {
+		assert val[0].hex() == 'e2'
+		assert val[1].hex() == '9c'
+		assert val[2].hex() == '94'
+	}
+}