MakerFLOSS/tests/test_gen_rack.py

import pytest

import gen_rack


def item(**kw):
    base = {"hostname": "x", "kind": "server", "status": "in-use", "rack": "rack01"}
    base.update(kw)
    return base


def test_validate_accepts_valid_placement():
    gen_rack.validate_item(item(rack_u=12, u_height=2, rack_face="front"))


def test_validate_rejects_u_overflow():
    with pytest.raises(gen_rack.SchemaError):
        gen_rack.validate_item(item(rack_u=47, u_height=3, rack_face="front"))


def test_validate_rejects_u_below_one():
    with pytest.raises(gen_rack.SchemaError):
        gen_rack.validate_item(item(rack_u=0, u_height=1, rack_face="front"))


def test_validate_rejects_bad_face():
    with pytest.raises(gen_rack.SchemaError):
        gen_rack.validate_item(item(rack_u=1, u_height=1, rack_face="sideways"))


def test_validate_rejects_zero_u_with_units():
    with pytest.raises(gen_rack.SchemaError):
        gen_rack.validate_item(item(rack_face="left", rack_u=1, u_height=1))


def test_validate_accepts_zero_u_rail():
    gen_rack.validate_item(item(rack_face="left"))


def test_validate_rejects_missing_units_on_faced_item():
    with pytest.raises(gen_rack.SchemaError):
        gen_rack.validate_item(item(rack_face="front"))


def test_overlaps_detects_same_face_overlap():
    items = [
        item(hostname="a", rack_u=1, u_height=2, rack_face="front"),
        item(hostname="b", rack_u=2, u_height=1, rack_face="front"),
    ]
    with pytest.raises(gen_rack.SchemaError):
        gen_rack.check_overlaps(items)


def test_overlaps_allows_same_u_different_face():
    items = [
        item(hostname="a", rack_u=5, u_height=1, rack_face="front"),
        item(hostname="b", rack_u=5, u_height=1, rack_face="rear"),
    ]
    gen_rack.check_overlaps(items)  # no raise


def test_overlaps_both_face_conflicts_with_front():
    items = [
        item(hostname="a", rack_u=5, u_height=1, rack_face="both"),
        item(hostname="b", rack_u=5, u_height=1, rack_face="front"),
    ]
    with pytest.raises(gen_rack.SchemaError):
        gen_rack.check_overlaps(items)


def test_overlaps_ignores_zero_u_rails():
    items = [
        item(hostname="p1", rack_face="left"),
        item(hostname="p2", rack_face="left"),
    ]
    gen_rack.check_overlaps(items)  # no raise


def test_render_svg_has_two_columns_of_48_slots():
    svg = gen_rack.render_svg("rack01", [])
    # one faint slot rect per U per column (front + rear)
    assert svg.count('fill="#f5f5f5"') == 2 * gen_rack.RACK_UNITS
    assert svg.startswith("<svg")
    assert svg.rstrip().endswith("</svg>")


def test_render_svg_includes_device_label():
    items = [item(hostname="mf00", rack_u=1, u_height=2, rack_face="front")]
    svg = gen_rack.render_svg("rack01", items)
    assert "mf00" in svg
    assert "U1" in svg


def test_render_svg_is_deterministic():
    items = [
        item(hostname="b", rack_u=3, u_height=1, rack_face="front"),
        item(hostname="a", rack_u=1, u_height=1, rack_face="rear"),
    ]
    assert gen_rack.render_svg("rack01", items) == gen_rack.render_svg(
        "rack01", list(reversed(items))
    )


def test_render_page_has_banner_image_and_table():
    items = [item(hostname="mf00", rack_u=1, u_height=2, rack_face="front")]
    page = gen_rack.render_page("rack01", items)
    assert "do not edit by hand" in page
    assert "![Rack rack01 elevation](rack01-elevation.svg)" in page
    assert "../../hardware/mf00.md" in page
    assert "U1–U2" in page


def _write_item(d, name, body):
    (d / f"{name}.md").write_text(body, encoding="utf-8")


def test_generate_writes_artifacts(tmp_path):
    hw = tmp_path / "hardware"
    out = tmp_path / "out"
    hw.mkdir()
    _write_item(
        hw,
        "mf00",
        "---\nhostname: mf00\nkind: server\nstatus: in-use\n"
        "rack: rack01\nrack_u: 1\nu_height: 1\nrack_face: front\n---\n",
    )
    # a non-rack file must be ignored
    _write_item(hw, "cloud", "---\nhostname: cloud\nkind: server\nstatus: in-use\n---\n")

    rc = gen_rack.generate(hw, out)

    assert rc == 0
    assert (out / "rack01.md").exists()
    assert (out / "rack01-elevation.svg").exists()
    assert "mf00" in (out / "rack01-elevation.svg").read_text()


def test_generate_returns_1_on_overlap(tmp_path):
    hw = tmp_path / "hardware"
    out = tmp_path / "out"
    hw.mkdir()
    for n, u in (("a", 1), ("b", 1)):
        _write_item(
            hw,
            n,
            f"---\nhostname: {n}\nkind: server\nstatus: in-use\n"
            f"rack: rack01\nrack_u: {u}\nu_height: 1\nrack_face: front\n---\n",
        )

    rc = gen_rack.generate(hw, out)

    assert rc == 1
    assert not (out / "rack01.md").exists()