tests: Add UTF-8 validity tests

1 files changed, 19 insertions, 0 deletions

diff --git a/tests/test_utf8.lua b/tests/test_utf8.lua
new file mode 100644
index 00000000..481eff5d
--- /dev/null
+++ b/tests/test_utf8.lua
@@ -0,0 +1,19 @@
+package.cpath = "../?.so"
+package.path = "../?.lua";
+
+function valid()
+	local encodings = require "util.encodings";
+	local utf8 = assert(encodings.utf8, "no encodings.utf8 module");
+	
+	for line in io.lines("utf8_sequences.txt") do
+		local data = line:match(":%s*([^#]+)"):gsub("%s+", ""):gsub("..", function (c) return string.char(tonumber(c, 16)); end)
+		local expect = line:match("(%S+):");
+		if expect ~= "pass" and expect ~= "fail" then
+			error("unknown expectation: "..line:match("^[^:]+"));
+		end
+		local prefix, style = "  ", valid_style;
+		local valid = utf8.valid(data);
+		assert_equal(valid, utf8.valid(data.." "));
+		assert_equal(valid, expect == "pass", line);
+	end
+end