#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""Decoys for scripts/script_tests_gate.py (R-885, R-421). Run: python3 scripts/test_script_tests_gate.py

Each decoy is a fake repo with a scripts/ tree. The gate must REFUSE: a suite that prints "OK" but exits 1 (the label
without the fact); a failing suite three directories deep (scope is a walk, not a list); an empty scripts/ (a gate that
checked nothing). It must PASS the genuine article, and step aside when nested.
"""
import os
import subprocess
import sys
import tempfile

HERE = os.path.dirname(os.path.abspath(__file__))
GATE = os.path.join(HERE, "script_tests_gate.py")

COVERS = {
    "script-tests": ("a suite that PRINTS OK and exits 1; a failing suite three levels deep; an empty scripts/ "
                     "tree; plus the genuine article (must pass) and the nested-run mark (must step aside)"),
}


def fake_repo(files):
    root = tempfile.mkdtemp()
    os.makedirs(os.path.join(root, "scripts"))
    for rel, body in files.items():
        p = os.path.join(root, "scripts", rel)
        os.makedirs(os.path.dirname(p), exist_ok=True)
        open(p, "w").write(body)
    return root


def gate(root, nested=False):
    env = {k: v for k, v in os.environ.items() if k != "FELHOM_SCRIPT_TESTS_GATE"}
    if nested:
        env["FELHOM_SCRIPT_TESTS_GATE"] = "1"
    return subprocess.run([sys.executable, GATE, root], env=env, stdout=subprocess.PIPE,
                          stderr=subprocess.STDOUT).returncode


CASES = [
    ("prints OK, exits 1", {"test_a.py": "print('OK')\nraise SystemExit(1)\n"}, False, 1),
    ("failing suite 3 levels deep", {"test_ok.py": "pass\n", "x/y/z/test_deep.py": "raise SystemExit(2)\n"}, False, 1),
    ("empty scripts/", {"README": "no tests here\n"}, False, 1),
    ("genuine: two passing suites", {"test_a.py": "pass\n", "sub/test_b.py": "print('fine')\n"}, False, 0),
    ("nested run steps aside", {"test_a.py": "raise SystemExit(1)\n"}, True, 0),
]


def main():
    bad = 0
    for name, files, nested, want in CASES:
        got = gate(fake_repo(files), nested)
        ok = got == want
        bad += not ok
        print("%s %-32s want rc=%d got rc=%d" % ("ok  " if ok else "FAIL", name, want, got))
    print("script-tests decoys: %d/%d" % (len(CASES) - bad, len(CASES)))
    return 1 if bad else 0


if __name__ == "__main__":
    sys.exit(main())