import pytest
import os
from ding.entry.cli_parsers import PLATFORM_PARSERS
from ding.entry.cli_parsers.slurm_parser import SlurmParser
slurm_parser = PLATFORM_PARSERS["slurm"]


@pytest.fixture
def set_slurm_env():
    os.environ["SLURM_NTASKS"] = '6'  # Parameter n，Process count / Task count
    os.environ["SLURM_NTASKS_PER_NODE"] = '3'  # Parameter ntasks-per-node，process count of each node
    os.environ["SLURM_NODELIST"] = 'SH-IDC1-10-5-38-[190,215]'  # All the nodes
    os.environ["SLURM_PROCID"] = '3'  # Proc order，start from 0，the read proc order may be different from nominal order
    os.environ["SLURMD_NODENAME"] = 'SH-IDC1-10-5-38-215'  # Name of current node

    yield

    del os.environ["SLURM_NTASKS"]
    del os.environ["SLURM_NTASKS_PER_NODE"]
    del os.environ["SLURM_NODELIST"]
    del os.environ["SLURM_PROCID"]
    del os.environ["SLURMD_NODENAME"]


@pytest.mark.unittest
@pytest.mark.usefixtures('set_slurm_env')
def test_slurm_parser():
    platform_spec = {
        "tasks": [
            {
                "labels": "league,collect",
                "node_ids": 10
            }, {
                "labels": "league,collect",
                "node_ids": 11
            }, {
                "labels": "evaluate",
                "node_ids": 20,
                "attach_to": "$node.10,$node.11"
            }, {
                "labels": "learn",
                "node_ids": 31,
                "attach_to": "$node.10,$node.11,$node.20"
            }, {
                "labels": "learn",
                "node_ids": 32,
                "attach_to": "$node.10,$node.11,$node.20"
            }, {
                "labels": "learn",
                "node_ids": 33,
                "attach_to": "$node.10,$node.11,$node.20"
            }
        ]
    }
    all_args = slurm_parser(platform_spec)
    assert all_args["labels"] == "learn"
    assert all_args["address"] == "SH-IDC1-10-5-38-215"
    assert all_args["ports"] == 15151  # Start from 15151
    assert all_args["node_ids"] == 31
    assert all_args[
        "attach_to"
    ] == "tcp://SH-IDC1-10-5-38-190:15151," +\
        "tcp://SH-IDC1-10-5-38-190:15152," +\
        "tcp://SH-IDC1-10-5-38-190:15153"

    # Test without platform_spec
    all_args = slurm_parser(None, topology="mesh", mq_type="nng")
    assert all_args["address"] == "SH-IDC1-10-5-38-215"
    assert all_args["node_ids"] == 3
    assert all_args["parallel_workers"] == 1
    assert all_args[
        "attach_to"
    ] == "tcp://SH-IDC1-10-5-38-190:15151," +\
        "tcp://SH-IDC1-10-5-38-190:15152," +\
        "tcp://SH-IDC1-10-5-38-190:15153"

    # Test _parse_node_list
    sp = SlurmParser(platform_spec)
    os.environ["SLURM_NODELIST"] = 'SH-IDC1-10-5-[38-40]'
    nodelist = sp._parse_node_list()  # Nodes * parallel_workers
    assert nodelist == [
        'SH-IDC1-10-5-38', 'SH-IDC1-10-5-38', 'SH-IDC1-10-5-38', 'SH-IDC1-10-5-39', 'SH-IDC1-10-5-39',
        'SH-IDC1-10-5-39', 'SH-IDC1-10-5-40', 'SH-IDC1-10-5-40', 'SH-IDC1-10-5-40'
    ]