Add Reddit API wrapper and related tests; update environment configuration

tests/api/test_reddit.py

@@ -0,0 +1,24 @@
+import pytest
+from praw import Reddit
+from app.social.reddit import MAX_COMMENTS, RedditWrapper
+
+@pytest.mark.social
+@pytest.mark.api
+class TestRedditWrapper:
+    def test_initialization(self):
+        wrapper = RedditWrapper()
+        assert wrapper.client_id is not None
+        assert wrapper.client_secret is not None
+        assert isinstance(wrapper.tool, Reddit)
+
+    def test_get_top_crypto_posts(self):
+        wrapper = RedditWrapper()
+        posts = wrapper.get_top_crypto_posts(limit=2)
+        assert isinstance(posts, list)
+        assert len(posts) == 2
+        for post in posts:
+            assert post.title != ""
+            assert isinstance(post.comments, list)
+            assert len(post.comments) <= MAX_COMMENTS
+            for comment in post.comments:
+                assert comment.description != ""