"""Самопроверка ядра скриптов perf/analysis (без стенда)."""
import json
import sys
from pathlib import Path

sys.path.insert(0, str(Path(__file__).resolve().parents[1] / "analysis"))

import cpuprofile_top  # noqa: E402
import timeline_breakdown  # noqa: E402


def test_self_times_nested_and_category_inheritance():
    evs = [
        {"name": "RunTask", "ts": 0, "dur": 100},
        {"name": "FunctionCall", "ts": 10, "dur": 50},
        {"name": "V8.Unknown", "ts": 20, "dur": 10},   # наследует scripting
        {"name": "Layout", "ts": 70, "dur": 20},
    ]
    st = {e["name"]: (s, c) for e, s, c in timeline_breakdown.self_times(evs)}
    assert st["RunTask"] == (30.0, "other")
    assert st["FunctionCall"] == (40.0, "scripting")
    assert st["V8.Unknown"] == (10.0, "scripting")
    assert st["Layout"] == (20.0, "rendering")


def test_vlq_decode():
    assert cpuprofile_top.vlq_decode("AAAA") == [0, 0, 0, 0]
    assert cpuprofile_top.vlq_decode("CAAC") == [1, 0, 0, 1]
    assert cpuprofile_top.vlq_decode("D") == [-1]
    assert cpuprofile_top.vlq_decode("gB") == [16]


def test_sourcemap_lookup(tmp_path):
    # строка 0: col 0 -> a.js:1:0, col 5 -> a.js:3:2; строка 1: col 0 -> b.js:1:0
    m = {"version": 3, "sources": ["../../../../../web/src/a.js", "../../../../../web/node_modules/x/b.js"],
         "names": [], "mappings": "AAAA,KAEE;ACFF"}
    p = tmp_path / "t.js.map"
    p.write_text(json.dumps(m))
    sm = cpuprofile_top.SourceMap(p)
    assert sm.lookup(0, 3)[:2] == ("web/src/a.js", 1)
    assert sm.lookup(0, 9)[:2] == ("web/src/a.js", 3)
    assert sm.lookup(1, 0)[0] == "web/node_modules/x/b.js"
    assert cpuprofile_top.package_of("web/node_modules/@emotion/hash/dist/x.js") == "node_modules/@emotion/hash"