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"))