From f3e580200e4ec64e561baa483aaeb21f9232dfd9 Mon Sep 17 00:00:00 2001
From: Mika <kontakt@donau2space.de>
Date: Sat, 17 Jan 2026 17:01:58 +0000
Subject: [PATCH] Add trace_agg/tests/test_core.py

---
 trace_agg/tests/test_core.py | 62 ++++++++++++++++++++++++++++++++++++
 1 file changed, 62 insertions(+)
 create mode 100644 trace_agg/tests/test_core.py

diff --git a/trace_agg/tests/test_core.py b/trace_agg/tests/test_core.py
new file mode 100644
index 0000000..e536584
--- /dev/null
+++ b/trace_agg/tests/test_core.py
@@ -0,0 +1,62 @@
+import json
+import pytest
+from pathlib import Path
+
+from src.trace_agg import core
+
+# Testdaten-Struktur entsprechend dem Data Model TraceDataRecord
+def _valid_trace_data():
+    return [
+        {
+            "run_id": "run_01",
+            "mischfenster_p50": 10.0,
+            "mischfenster_p95": 20.0,
+            "mischfenster_max": 25.0,
+            "step_order_stability": 0.9,
+            "read_between_steps": 5,
+        },
+        {
+            "run_id": "run_02",
+            "mischfenster_p50": 15.0,
+            "mischfenster_p95": 25.0,
+            "mischfenster_max": 30.0,
+            "step_order_stability": 0.8,
+            "read_between_steps": 7,
+        },
+    ]
+
+@pytest.fixture
+def trace_data():
+    return _valid_trace_data()
+
+def test_generate_summary_returns_dict(trace_data):
+    result = core.generate_summary(trace_data)
+    assert isinstance(result, dict), "Result muss ein dict sein"
+    assert "aggregated" in result, "Summary soll 'aggregated'-Schlüssel enthalten"
+
+
+def test_generate_summary_contains_expected_keys(trace_data):
+    summary = core.generate_summary(trace_data)
+    aggregated = summary.get("aggregated", {})
+    expected_keys = {"mischfenster_p50", "mischfenster_p95", "mischfenster_max", "step_order_stability", "read_between_steps"}
+    assert expected_keys.issubset(aggregated.keys()), "Alle erwarteten Kennzahlen müssen vorhanden sein"
+
+
+def test_generate_summary_value_ranges(trace_data):
+    summary = core.generate_summary(trace_data)
+    agg = summary["aggregated"]
+    assert agg["mischfenster_max"] >= agg["mischfenster_p95"] >= agg["mischfenster_p50"], "Statistische Reihenfolge soll stimmen"
+    assert 0 <= agg["step_order_stability"] <= 1, "Stabilitätswert soll zwischen 0 und 1 liegen"
+    assert agg["read_between_steps"] >= 0, "read_between_steps sollte nicht negativ sein"
+
+
+def test_generate_summary_with_empty_input():
+    result = core.generate_summary([])
+    # Erwartet: leeres oder Default-Summary
+    assert isinstance(result, dict)
+    assert result.get("aggregated"), "Es sollte auch bei leerer Eingabe eine Struktur zurückgegeben werden"
+
+
+def test_generate_summary_invalid_input_type():
+    with pytest.raises((TypeError, ValueError)):
+        core.generate_summary(None)