Add log_handler/tests/test_core.py

log_handler/tests/test_core.py

@@ -0,0 +1,64 @@
+import pytest
+import tempfile
+from pathlib import Path
+from log_handler import core
+
+
+@pytest.fixture
+def sample_log_file(tmp_path: Path) -> Path:
+    sample_content = ("""2024-05-01 23:45:01, Temp=14.5C, SensorTemp=36.2C\n"""
+                      "2024-05-01 23:50:01, Temp=14.7C, SensorTemp=36.4C\n"""
+                      "Irrelevante Zeile ohne Daten\n"""
+                      "2024-05-01 23:55:01, Temp=14.8C, SensorTemp=36.6C\n")
+    file_path = tmp_path / "sample_log.log"
+    file_path.write_text(sample_content)
+    return file_path
+
+
+def test_parse_log_file_returns_list(sample_log_file: Path):
+    result = core.parse_log_file(str(sample_log_file))
+    assert isinstance(result, list)
+    assert all(hasattr(r, "timestamp") for r in result)
+    assert all(hasattr(r, "temperature") for r in result)
+    assert all(hasattr(r, "sensor_temp") for r in result)
+
+
+def test_parse_log_file_correct_values(sample_log_file: Path):
+    result = core.parse_log_file(str(sample_log_file))
+    assert len(result) == 3
+    first = result[0]
+    assert first.timestamp.startswith("2024-05-01 23:45")
+    assert 10.0 < first.temperature < 20.0
+    assert 30.0 < first.sensor_temp < 40.0
+
+
+def test_parse_log_file_handles_invalid_lines(tmp_path: Path):
+    corrupted_file = tmp_path / "bad.log"
+    corrupted_file.write_text("no valid data here\n")
+    result = core.parse_log_file(str(corrupted_file))
+    assert isinstance(result, list)
+    assert result == []
+
+
+def test_parse_log_file_invalid_input_type():
+    with pytest.raises((TypeError, FileNotFoundError)):
+        core.parse_log_file(None)  # type: ignore
+
+
+def test_parse_log_file_nonexistent_file():
+    with pytest.raises(FileNotFoundError):
+        core.parse_log_file("./does_not_exist.log")
+
+
+def test_data_integrity_fields(sample_log_file: Path):
+    result = core.parse_log_file(str(sample_log_file))
+    for entry in result:
+        assert isinstance(entry.timestamp, str)
+        assert isinstance(entry.temperature, float)
+        assert isinstance(entry.sensor_temp, float)
+
+
+def test_parse_log_file_output_consistency(sample_log_file: Path):
+    result1 = core.parse_log_file(str(sample_log_file))
+    result2 = core.parse_log_file(str(sample_log_file))
+    assert result1 == result2