1 files changed, 55 insertions, 0 deletions
diff --git a/examples/redis-unstable/modules/vector-sets/tests/vrandmember.py b/examples/redis-unstable/modules/vector-sets/tests/vrandmember.py
new file mode 100644
index 0000000..ca9e006
--- /dev/null
+++ b/examples/redis-unstable/modules/vector-sets/tests/vrandmember.py
@@ -0,0 +1,55 @@
+from test import TestCase, generate_random_vector, fill_redis_with_vectors
+import struct
+
+class VRANDMEMBERTest(TestCase):
+    def getname(self):
+        return "VRANDMEMBER basic functionality"
+
+    def test(self):
+        # Test with empty key
+        result = self.redis.execute_command('VRANDMEMBER', self.test_key)
+        assert result is None, "VRANDMEMBER on non-existent key should return NULL"
+
+        result = self.redis.execute_command('VRANDMEMBER', self.test_key, 5)
+        assert isinstance(result, list) and len(result) == 0, "VRANDMEMBER with count on non-existent key should return empty array"
+
+        # Fill with vectors
+        dim = 4
+        count = 100
+        data = fill_redis_with_vectors(self.redis, self.test_key, count, dim)
+
+        # Test single random member
+        result = self.redis.execute_command('VRANDMEMBER', self.test_key)
+        assert result is not None, "VRANDMEMBER should return a random member"
+        assert result.decode() in data.names, "Random member should be in the set"
+
+        # Test multiple unique members (positive count)
+        positive_count = 10
+        result = self.redis.execute_command('VRANDMEMBER', self.test_key, positive_count)
+        assert isinstance(result, list), "VRANDMEMBER with positive count should return an array"
+        assert len(result) == positive_count, f"Should return {positive_count} members"
+
+        # Check for uniqueness
+        decoded_results = [r.decode() for r in result]
+        assert len(decoded_results) == len(set(decoded_results)), "Results should be unique with positive count"
+        for item in decoded_results:
+            assert item in data.names, "All returned items should be in the set"
+
+        # Test more members than in the set
+        result = self.redis.execute_command('VRANDMEMBER', self.test_key, count + 10)
+        assert len(result) == count, "Should return only the available members when asking for more than exist"
+
+        # Test with duplicates (negative count)
+        negative_count = -20
+        result = self.redis.execute_command('VRANDMEMBER', self.test_key, negative_count)
+        assert isinstance(result, list), "VRANDMEMBER with negative count should return an array"
+        assert len(result) == abs(negative_count), f"Should return {abs(negative_count)} members"
+
+        # Check that all returned elements are valid
+        decoded_results = [r.decode() for r in result]
+        for item in decoded_results:
+            assert item in data.names, "All returned items should be in the set"
+
+        # Test with count = 0 (edge case)
+        result = self.redis.execute_command('VRANDMEMBER', self.test_key, 0)
+        assert isinstance(result, list) and len(result) == 0, "VRANDMEMBER with count=0 should return empty array"