fix: resolve ruff lint issues in test files

Author: Patel230

tests/test_context_window.py

@@ -1,25 +1,26 @@
 from hawk.context_window import ContextOptimizer
 from hawk.types import Message
 
+
 def test_context_optimizer_compaction():
     optimizer = ContextOptimizer(max_tokens=20) # Approx 80 chars
-    
+
     # 3 messages, ~30 chars each
     messages = [
         Message(role="user", content="This is message number one."),
         Message(role="user", content="This is message number two."),
         Message(role="user", content="This is message number three.")
     ]
-    
+
     # "Sys" = 3 chars = 0 tokens (3//4). Available = 20
     # msg3: 29 chars = 7 tokens. Current=7
     # msg2: 27 chars = 6 tokens. Current=13
     # msg1: 27 chars = 6 tokens. Current=19
     # Wait, my manual math shows they all fit. Let's make max_tokens smaller.
-    
+
     optimizer = ContextOptimizer(max_tokens=15)
     compacted = optimizer.compact_messages(messages, system_prompt="Sys")
-    
+
     assert len(compacted) == 2
     assert compacted[0].content == "This is message number two."
     assert compacted[1].content == "This is message number three."

tests/test_graph_dsl.py

@@ -1,12 +1,13 @@
 from hawk.graph_dsl import GraphQuery, NodeType
 
+
 def test_graph_query_shortest_path():
     g = GraphQuery()
     g.node("A", NodeType.START).node("B").node("C").node("D", NodeType.END)
     g.edge("A", "B").edge("B", "C").edge("C", "D").edge("A", "D")
-    
+
     path = g.shortest_path("A", "D")
     assert path == ["A", "D"]
-    
+
     path_long = g.shortest_path("A", "C")
     assert path_long == ["A", "B", "C"]

tests/test_harness.py

@@ -1,6 +1,8 @@
 import pytest
+
 from hawk.harness import TestHarness
 
+
 @pytest.mark.asyncio
 async def test_harness_validators():
     harness = TestHarness("test")