Testing whether table exists

    @Test fun columnsForCategoryTable() {
        val columns = getTableColumns(database.readableDatabase, "tbl_category")

        assertThat(columns).containsExactly("uuid", "name", "color")
    }

    @Test fun createDefaultCategoriesTable() {
        assertThat(database.readableDatabase.doesTableExist("tbl_category")).isTrue()
    }

    @Test fun createPolishCategoriesTable() {
        assertThat(database.readableDatabase.doesTableExist("tbl_category_pl")).isTrue()
    }

    @Test fun createGermanCategoriesTable() {
        assertThat(database.readableDatabase.doesTableExist("tbl_category_de")).isTrue()
    }