import pytest
import os
from os import path
import shutil

from core.concept import Concept
from core.sheerka import Sheerka

tests_root = path.abspath("../build/tests")


@pytest.fixture(autouse=True)
def init_test():
    if path.exists(tests_root):
        shutil.rmtree(tests_root)

    if not path.exists(tests_root):
        os.makedirs(tests_root)
    current_pwd = os.getcwd()
    os.chdir(tests_root)

    yield None

    os.chdir(current_pwd)


def test_root_folder_is_created_after_initialization():
    root_folder = "init_folder"

    return_value = Sheerka().initialize(root_folder)
    assert return_value.status, "initialisation should be successful"
    assert Sheerka().concept_equals(return_value.value, Sheerka().get_concept("success"))
    assert os.path.exists(root_folder), "init folder should be created"


def test_lists_of_concepts_is_initialized():
    root_folder = "init_folder"

    Sheerka().initialize(root_folder)
    assert len(Sheerka().concepts) > 1


def test_null_concept_are_equals():
    concept1 = Concept("test1")
    concept2 = Concept("test2")
    concept3 = Concept("test3")

    assert not Sheerka.concept_equals(concept1, None)
    assert not Sheerka.concept_equals(None, concept1)
    assert not Sheerka.concept_equals(concept1, concept2)
    assert not Sheerka.concept_equals(concept1, concept3)

    assert Sheerka.concept_equals(None, None)
    assert Sheerka.concept_equals(concept1, concept1)