"""Test cases for procedures defined in computations.gemma"""
import unittest

from unittest import mock
from gn3.computations.gemma import generate_pheno_txt_file


class TestGemma(unittest.TestCase):
    """Test cases for computations.gemma module"""

    def test_generate_pheno_txt_file(self):
        """Test that the pheno text file is generated correctly"""
        open_mock = mock.mock_open()
        with mock.patch("gn3.computations.gemma.open",
                        open_mock, create=True):
            _file = generate_pheno_txt_file(tmpdir="/tmp",
                                            trait_filename="phenotype.txt",
                                            values=["x", "x", "BXD07 438.700"])
            self.assertEqual(_file, "/tmp/gn2/phenotype.txt")
        open_mock.assert_called_with("/tmp/gn2/phenotype.txt", "w")
        open_mock.return_value.write.assert_has_calls([
            mock.call("NA\n"),
            mock.call("NA\n"),
            mock.call("BXD07 438.700\n")])