1 files changed, 44 insertions, 0 deletions

diff --git a/src/testdir/test_expr_utf8.vim b/src/testdir/test_expr_utf8.vim
new file mode 100644
index 0000000..c6d2e4e
--- /dev/null
+++ b/src/testdir/test_expr_utf8.vim
@@ -0,0 +1,44 @@
+" Tests for expressions using utf-8.
+
+func Test_strgetchar()
+  call assert_equal(char2nr('á'), strgetchar('áxb', 0))
+  call assert_equal(char2nr('x'), strgetchar('áxb', 1))
+
+  call assert_equal(char2nr('a'), strgetchar('àxb', 0))
+  call assert_equal(char2nr('̀'), strgetchar('àxb', 1))
+  call assert_equal(char2nr('x'), strgetchar('àxb', 2))
+
+  call assert_equal(char2nr('あ'), strgetchar('あaい', 0))
+  call assert_equal(char2nr('a'), strgetchar('あaい', 1))
+  call assert_equal(char2nr('い'), strgetchar('あaい', 2))
+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('いうeお', strcharpart('あいうeお', 1))
+  call assert_equal('い', strcharpart('あいうeお', 1, 1))
+  call assert_equal('いう', strcharpart('あいうeお', 1, 2))
+  call assert_equal('いうe', strcharpart('あいうeお', 1, 3))
+  call assert_equal('いうeお', strcharpart('あいうeお', 1, 4))
+  call assert_equal('eお', strcharpart('あいうeお', 3))
+  call assert_equal('e', strcharpart('あいうeお', 3, 1))
+
+  call assert_equal('あ', strcharpart('あいうeお', -3, 4))
+
+  call assert_equal('a', strcharpart('àxb', 0, 1))
+  call assert_equal('̀', strcharpart('àxb', 1, 1))
+  call assert_equal('x', strcharpart('àxb', 2, 1))
+
+
+  call assert_equal('a', strcharpart('àxb', 0, 1, 0))
+  call assert_equal('à', strcharpart('àxb', 0, 1, 1))
+  call assert_equal('x', strcharpart('àxb', 1, 1, 1))
+
+  call assert_fails("let v = strcharpart('abc', 0, 0, [])", 'E745:')
+  call assert_fails("let v = strcharpart('abc', 0, 0, 2)", 'E1023:')
+endfunc
+
+" vim: shiftwidth=2 sts=2 expandtab