util.human.io: Fix cutting of UTF-8 into pieces

Down the rabbit hole we go...

1 files changed, 19 insertions, 0 deletions

diff --git a/spec/util_human_io_spec.lua b/spec/util_human_io_spec.lua
index ead117df..f1b28883 100644
--- a/spec/util_human_io_spec.lua
+++ b/spec/util_human_io_spec.lua
@@ -23,6 +23,25 @@ describe("util.human.io", function ()
 
 		end);
 	end);
+
+	describe("ellipsis", function()
+		it("works", function()
+			assert.equal("…", human_io.ellipsis("abc", 1));
+			assert.equal("a…", human_io.ellipsis("abc", 2));
+			assert.equal("abc", human_io.ellipsis("abc", 3));
+
+			assert.equal("…", human_io.ellipsis("räksmörgås", 1));
+			assert.equal("r…", human_io.ellipsis("räksmörgås", 2));
+			assert.equal("rä…", human_io.ellipsis("räksmörgås", 3));
+			assert.equal("räk…", human_io.ellipsis("räksmörgås", 4));
+			assert.equal("räks…", human_io.ellipsis("räksmörgås", 5));
+			assert.equal("räksm…", human_io.ellipsis("räksmörgås", 6));
+			assert.equal("räksmö…", human_io.ellipsis("räksmörgås", 7));
+			assert.equal("räksmör…", human_io.ellipsis("räksmörgås", 8));
+			assert.equal("räksmörg…", human_io.ellipsis("räksmörgås", 9));
+			assert.equal("räksmörgås", human_io.ellipsis("räksmörgås", 10));
+		end);
+	end);
 end);