# -*- coding: utf-8; -*-

from unittest import TestCase
from unittest.mock import MagicMock, patch

from wuttamess import postgres as mod


class TestSql(TestCase):

    def test_basic(self):
        c = MagicMock()
        mod.sql(c, "select @@version")
        c.sudo.assert_called_once_with(
            'psql --tuples-only --no-align --command="select @@version" ',
            user="postgres",
        )


class TestUserExists(TestCase):

    def test_user_exists(self):
        c = MagicMock()
        with patch.object(mod, "sql") as sql:
            sql.return_value.stdout = "foo"
            self.assertTrue(mod.user_exists(c, "foo"))
            sql.assert_called_once_with(
                c, "SELECT rolname FROM pg_roles WHERE rolname = 'foo'", port=None
            )

    def test_user_does_not_exist(self):
        c = MagicMock()
        with patch.object(mod, "sql") as sql:
            sql.return_value.stdout = ""
            self.assertFalse(mod.user_exists(c, "foo"))
            sql.assert_called_once_with(
                c, "SELECT rolname FROM pg_roles WHERE rolname = 'foo'", port=None
            )


class TestCreateUser(TestCase):

    def test_basic(self):
        c = MagicMock()
        with patch.object(mod, "set_user_password") as set_user_password:
            mod.create_user(c, "foo", checkfirst=False)
            c.sudo.assert_called_once_with(
                "createuser --no-createrole --no-superuser foo", user="postgres"
            )
            set_user_password.assert_not_called()

    def test_user_exists(self):
        c = MagicMock()

        with patch.object(mod, "user_exists") as user_exists:
            user_exists.return_value = True

            mod.create_user(c, "foo")
            user_exists.assert_called_once_with(c, "foo", port=None)
            c.sudo.assert_not_called()

    def test_with_password(self):
        c = MagicMock()
        with patch.object(mod, "set_user_password") as set_user_password:
            mod.create_user(c, "foo", "foopass", checkfirst=False)
            c.sudo.assert_called_once_with(
                "createuser --no-createrole --no-superuser foo", user="postgres"
            )
            set_user_password.assert_called_once_with(c, "foo", "foopass", port=None)


class TestSetUserPassword(TestCase):

    def test_basic(self):
        c = MagicMock()
        with patch.object(mod, "sql") as sql:
            mod.set_user_password(c, "foo", "foopass")
            sql.assert_called_once_with(
                c,
                "ALTER USER \\\"foo\\\" PASSWORD 'foopass';",
                port=None,
                hide=True,
                echo=False,
            )


class TestDbExists(TestCase):

    def test_db_exists(self):
        c = MagicMock()
        with patch.object(mod, "sql") as sql:
            sql.return_value.stdout = "foo"
            self.assertTrue(mod.db_exists(c, "foo"))
            sql.assert_called_once_with(
                c, "SELECT datname FROM pg_database WHERE datname = 'foo'", port=None
            )

    def test_db_does_not_exist(self):
        c = MagicMock()
        with patch.object(mod, "sql") as sql:
            sql.return_value.stdout = ""
            self.assertFalse(mod.db_exists(c, "foo"))
            sql.assert_called_once_with(
                c, "SELECT datname FROM pg_database WHERE datname = 'foo'", port=None
            )


class TestCreateDb(TestCase):

    def test_basic(self):
        c = MagicMock()
        mod.create_db(c, "foo", checkfirst=False)
        c.sudo.assert_called_once_with("createdb foo", user="postgres")

    def test_db_exists(self):
        c = MagicMock()

        with patch.object(mod, "db_exists") as db_exists:
            db_exists.return_value = True

            mod.create_db(c, "foo")
            db_exists.assert_called_once_with(c, "foo", port=None)
            c.sudo.assert_not_called()


class TestDropDb(TestCase):

    def test_basic(self):
        c = MagicMock()
        mod.drop_db(c, "foo", checkfirst=False)
        c.sudo.assert_called_once_with("dropdb foo", user="postgres")

    def test_db_does_not_exist(self):
        c = MagicMock()

        with patch.object(mod, "db_exists") as db_exists:
            db_exists.return_value = False

            mod.drop_db(c, "foo")
            db_exists.assert_called_once_with(c, "foo")
            c.sudo.assert_not_called()


class TestDumpDb(TestCase):

    def test_basic(self):
        c = MagicMock()
        result = mod.dump_db(c, "foo")
        self.assertEqual(result, "foo.sql.gz")
        c.sudo.assert_called_once_with(
            "pg_dump foo | gzip -c > /tmp/foo.sql.gz", user="postgres"
        )
        c.run.assert_called_with("rm /tmp/foo.sql.gz")