"""Tests for JSONL parser."""
from pathlib import Path
import pytest
from codesdevs_log_analyzer.models import LogLevel
from codesdevs_log_analyzer.parsers.jsonl import JSONLParser
class TestJSONLParser:
"""Tests for JSONLParser."""
@pytest.fixture
def parser(self) -> JSONLParser:
"""Create parser instance."""
return JSONLParser()
def test_can_parse_valid_json(self, parser: JSONLParser) -> None:
"""Test can_parse returns True for valid JSON."""
assert parser.can_parse('{"message": "test"}')
assert parser.can_parse('{"level": "info", "msg": "test"}')
def test_can_parse_invalid_json(self, parser: JSONLParser) -> None:
"""Test can_parse returns False for invalid JSON."""
assert not parser.can_parse("Not JSON")
assert not parser.can_parse('{"incomplete": ')
assert not parser.can_parse("")
def test_parse_standard_fields(self, parser: JSONLParser) -> None:
"""Test parsing with standard field names."""
line = '{"timestamp":"2026-01-15T10:30:00Z","level":"info","message":"Test message"}'
entry = parser.parse_line(line, 1)
assert entry is not None
assert entry.message == "Test message"
assert entry.level == LogLevel.INFO
assert entry.timestamp is not None
def test_parse_alternative_field_names(self, parser: JSONLParser) -> None:
"""Test parsing with alternative field names."""
line = '{"ts":"2026-01-15T10:30:00Z","lvl":"error","msg":"Error occurred"}'
entry = parser.parse_line(line, 1)
assert entry is not None
assert entry.message == "Error occurred"
assert entry.level == LogLevel.ERROR
def test_parse_bunyan_numeric_levels(self, parser: JSONLParser) -> None:
"""Test parsing Bunyan numeric levels."""
line = '{"time":"2026-01-15T10:30:00Z","level":50,"msg":"Error"}'
entry = parser.parse_line(line, 1)
assert entry is not None
assert entry.level == LogLevel.ERROR
def test_parse_unix_timestamp(self, parser: JSONLParser) -> None:
"""Test parsing Unix epoch timestamp."""
line = '{"ts":1736934600000,"level":"info","msg":"Test"}'
entry = parser.parse_line(line, 1)
assert entry is not None
assert entry.timestamp is not None
def test_parse_extra_fields(self, parser: JSONLParser) -> None:
"""Test extra fields go to metadata."""
line = '{"timestamp":"2026-01-15T10:30:00Z","level":"info","message":"Test","user_id":42,"request_id":"abc"}'
entry = parser.parse_line(line, 1)
assert entry is not None
assert entry.metadata["user_id"] == 42
assert entry.metadata["request_id"] == "abc"
def test_parse_nested_objects(self, parser: JSONLParser) -> None:
"""Test nested objects are flattened."""
line = '{"timestamp":"2026-01-15T10:30:00Z","message":"Test","context":{"user":"test","ip":"1.2.3.4"}}'
entry = parser.parse_line(line, 1)
assert entry is not None
assert "context.user" in entry.metadata
assert entry.metadata["context.user"] == "test"
def test_parse_file(self, parser: JSONLParser, jsonl_file: Path) -> None:
"""Test parsing JSONL file."""
entries = list(parser.parse_file(str(jsonl_file)))
assert len(entries) > 0
def test_detect_confidence(self, sample_jsonl_lines: list[str]) -> None:
"""Test format detection confidence."""
confidence = JSONLParser.detect_confidence(sample_jsonl_lines)
assert confidence > 0.7
