From 4b835bcef7ace2cd7e44173cb0723395429d5d4a Mon Sep 17 00:00:00 2001
From: Alain Brenzikofer <alain@integritee.network>
Date: Tue, 9 Jun 2026 15:09:30 +0200
Subject: [PATCH] add test

---
 scripts/resolver/test_snrc_resolve.py | 85 +++++++++++++++++++++++++++
 1 file changed, 85 insertions(+)
 create mode 100644 scripts/resolver/test_snrc_resolve.py

diff --git a/scripts/resolver/test_snrc_resolve.py b/scripts/resolver/test_snrc_resolve.py
new file mode 100644
index 000000000..107c0e90d
--- /dev/null
+++ b/scripts/resolver/test_snrc_resolve.py
@@ -0,0 +1,85 @@
+#!/usr/bin/env python3
+"""Unit tests for snrc-resolve helpers.
+
+Run with `python3 -m unittest scripts/resolver/test_snrc_resolve.py`.
+"""
+
+import importlib.util
+import os
+import unittest
+
+# snrc-resolve.py has a hyphen, so import it via importlib instead of `import`.
+_HERE = os.path.dirname(os.path.abspath(__file__))
+_SPEC = importlib.util.spec_from_file_location(
+    "snrc_resolve", os.path.join(_HERE, "snrc-resolve.py")
+)
+snrc = importlib.util.module_from_spec(_SPEC)
+_SPEC.loader.exec_module(snrc)
+
+
+class SplitCsvTests(unittest.TestCase):
+    """`split_csv` decodes the multi-URL convention for simplex.contact /
+    simplex.channel text records. Reuses the same rule the dApp's
+    `parseSimplexUrls` will use, so the two sides round-trip cleanly."""
+
+    def test_empty_string_yields_empty_list(self):
+        self.assertEqual(snrc.split_csv(""), [])
+
+    def test_whitespace_only_yields_empty_list(self):
+        self.assertEqual(snrc.split_csv("   "), [])
+        self.assertEqual(snrc.split_csv(" , , "), [])
+
+    def test_single_url_yields_singleton_list(self):
+        self.assertEqual(
+            snrc.split_csv("https://smp16.simplex.im/a#H1"),
+            ["https://smp16.simplex.im/a#H1"],
+        )
+
+    def test_two_urls_split_on_comma(self):
+        self.assertEqual(
+            snrc.split_csv(
+                "https://smp16.simplex.im/a#H1,https://smp19.simplex.im/a#H1"
+            ),
+            [
+                "https://smp16.simplex.im/a#H1",
+                "https://smp19.simplex.im/a#H1",
+            ],
+        )
+
+    def test_whitespace_around_commas_is_trimmed(self):
+        self.assertEqual(
+            snrc.split_csv(
+                "  https://smp16.simplex.im/a#H1 ,\thttps://smp19.simplex.im/a#H1 "
+            ),
+            [
+                "https://smp16.simplex.im/a#H1",
+                "https://smp19.simplex.im/a#H1",
+            ],
+        )
+
+    def test_trailing_comma_does_not_produce_empty_entry(self):
+        self.assertEqual(
+            snrc.split_csv("https://smp16.simplex.im/a#H1,"),
+            ["https://smp16.simplex.im/a#H1"],
+        )
+
+    def test_doubled_comma_does_not_produce_empty_entry(self):
+        self.assertEqual(
+            snrc.split_csv(
+                "https://smp16.simplex.im/a#H1,,https://smp19.simplex.im/a#H1"
+            ),
+            [
+                "https://smp16.simplex.im/a#H1",
+                "https://smp19.simplex.im/a#H1",
+            ],
+        )
+
+    def test_order_is_preserved(self):
+        self.assertEqual(
+            snrc.split_csv("c,a,b"),
+            ["c", "a", "b"],
+        )
+
+
+if __name__ == "__main__":
+    unittest.main()