commit bbd94b4: [Test] Add some unit tests for punycode conversion

[Andrew Lewis]

Author: Andrew Lewis
Date: 2020-12-09 11:11:54 +0200
URL: https://github.com/rspamd/rspamd/commit/bbd94b406197e04387e600a82d38b310e76ec464 (refs/pull/3572/head)

[Test] Add some unit tests for punycode conversion

---
 test/lua/unit/rspamd_resolver.lua | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/test/lua/unit/rspamd_resolver.lua b/test/lua/unit/rspamd_resolver.lua
new file mode 100644
index 000000000..e987ff00b
--- /dev/null
+++ b/test/lua/unit/rspamd_resolver.lua
@@ -0,0 +1,31 @@
+-- Rspamd resolver Lua tests
+
+context("Check punycoding UTF-8 URL", function()
+  local rspamd_resolver = require "rspamd_resolver"
+  local rspamd_util = require "rspamd_util"
+
+  local resolver = rspamd_resolver.init(rspamd_util.create_event_base(), rspamd_config)
+
+  local cases = {
+    -- https://unicode.org/reports/tr46/#Deviations
+    ['faß.de'] = 'fass.de', -- IDNA2008 result: xn--fa-hia.de
+    ['βόλος.com'] = 'xn--nxasmq6b.com', -- IDNA2008 result: xn--nxasmm1c.com
+    ['نامه‌ای.com'] = 'xn--mgba3gch31f.com', -- IDNA2008 result: xn--mgba3gch31f060k.com
+    ['ශ්‍රී.com'] = 'xn--10cl1a0b.com', -- IDNA2008 result: xn--10cl1a0b660p.com 
+
+    -- https://unicode.org/reports/tr46/#Table_Example_Processing
+    ['日本語。ＪＰ'] = 'xn--wgv71a119e.jp', -- Fullwidth characters are remapped, including 。
+    --['u¨.com'] = 'xn--tda.com', -- Normalize changes u + umlaut to ü
+    ['☕.us'] = 'xn--53h.us', -- Post-Unicode 3.2 characters are allowed
+
+    -- Other
+    ['example.рф'] = 'example.xn--p1ai',
+  }
+
+  for k, v in pairs(cases) do
+    test(string.format("punycode %s -> %s", k, v), function()
+      local res = resolver:idna_convert_utf8(k)
+      assert_equal(res, v)
+    end)
+  end
+end)