1 files changed, 26 insertions, 0 deletions

diff --git a/src/testdir/test_expr_utf8.vim b/src/testdir/test_expr_utf8.vim
new file mode 100644
index 000000000..8b10e6300
--- /dev/null
+++ b/src/testdir/test_expr_utf8.vim
@@ -0,0 +1,26 @@
+" Tests for expressions using utf-8.
+if !has('multi_byte')
+  finish
+endif
+set encoding=utf-8
+scriptencoding utf-8
+
+func Test_strgetchar()
+  call assert_equal(char2nr('a'), strgetchar('axb', 0))
+  call assert_equal(char2nr('x'), strgetchar('axb', 1))
+  call assert_equal(char2nr('b'), strgetchar('axb', 2))
+
+  call assert_equal(-1, strgetchar('axb', -1))
+  call assert_equal(-1, strgetchar('axb', 3))
+  call assert_equal(-1, strgetchar('', 0))
+endfunc
+
+func Test_strcharpart()
+  call assert_equal('áxb', strcharpart('áxb', 0))
+  call assert_equal('á', strcharpart('áxb', 0, 1))
+  call assert_equal('x', strcharpart('áxb', 1, 1))
+
+  call assert_equal('a', strcharpart('àxb', 0, 1))
+  call assert_equal('̀', strcharpart('àxb', 1, 1))
+  call assert_equal('x', strcharpart('àxb', 2, 1))
+endfunc