feat(backend): 835 ERA parser with BPR/CLP/SVC balancing, CO Medicaid config, CLI, and FastAPI route

backend/tests/test_cli_835.py

@@ -0,0 +1,73 @@
+"""Tests for the `parse-835` Click subcommand."""
+import json
+from pathlib import Path
+
+import pytest
+from click.testing import CliRunner
+
+from cyclone.cli import main
+
+FIXTURE = Path(__file__).parent / "fixtures" / "minimal_835.txt"
+UNBALANCED = Path(__file__).parent / "fixtures" / "unbalanced_835.txt"
+
+
+def test_cli_parse_835_writes_outputs(tmp_path: Path):
+    runner = CliRunner()
+    result = runner.invoke(main, ["parse-835", str(FIXTURE), "--output-dir", str(tmp_path)])
+    assert result.exit_code == 0, result.output
+    written = list(tmp_path.glob("payout-*.json"))
+    assert len(written) == 1
+    summary = json.loads((tmp_path / "summary.json").read_text())
+    assert summary["total_claims"] == 1
+    assert summary["passed"] == 1
+    assert summary["failed"] == 0
+
+
+def test_cli_parse_835_strict_promotes_warnings(tmp_path: Path):
+    runner = CliRunner()
+    # Strict mode: even warnings cause failed=1. Minimal fixture is fully
+    # passing so this is a smoke test that the flag is wired.
+    result = runner.invoke(main, ["parse-835", str(FIXTURE), "--output-dir", str(tmp_path), "--strict"])
+    assert result.exit_code == 0
+    summary = json.loads((tmp_path / "summary.json").read_text())
+    assert summary["passed"] == 1
+
+
+def test_cli_parse_835_no_raw_segments(tmp_path: Path):
+    runner = CliRunner()
+    result = runner.invoke(main, ["parse-835", str(FIXTURE), "--output-dir", str(tmp_path), "--no-raw-segments"])
+    assert result.exit_code == 0
+    data = json.loads(next(tmp_path.glob("payout-*.json")).read_text())
+    # The claim lives under the "claim" key in each payout file.
+    assert data["claim"]["raw_segments"] == []
+
+
+def test_cli_parse_835_unbalanced_strict_fails(tmp_path: Path):
+    runner = CliRunner()
+    result = runner.invoke(main, ["parse-835", str(UNBALANCED), "--output-dir", str(tmp_path), "--strict"])
+    assert result.exit_code == 0, result.output
+    summary = json.loads((tmp_path / "summary.json").read_text())
+    assert summary["passed"] == 0
+    assert summary["failed"] == 1
+    # R835_BAL_BPR_vs_CLP04 is the rule that fired.
+    assert "R835_BAL_BPR_vs_CLP04" in summary["issues_by_rule"]
+
+
+def test_cli_parse_835_unknown_payer_errors(tmp_path: Path):
+    runner = CliRunner()
+    result = runner.invoke(main, ["parse-835", str(FIXTURE), "--output-dir", str(tmp_path), "--payer", "no_such_payer"])
+    assert result.exit_code != 0
+
+
+def test_cli_parse_835_missing_file_exits_2(tmp_path: Path):
+    runner = CliRunner()
+    result = runner.invoke(main, ["parse-835", "/no/such/file.txt", "--output-dir", str(tmp_path)])
+    assert result.exit_code == 2
+
+
+def test_cli_parse_835_generic_payer(tmp_path: Path):
+    runner = CliRunner()
+    result = runner.invoke(main, ["parse-835", str(FIXTURE), "--output-dir", str(tmp_path), "--payer", "generic_835"])
+    assert result.exit_code == 0, result.output
+    summary = json.loads((tmp_path / "summary.json").read_text())
+    assert summary["passed"] == 1