openrefine-client/google/test/test_engine.py

#!/usr/bin/env python
# encoding: utf-8
"""
test_engine.py

Created by Paul Makepeace on 2011-04-22.
Copyright (c) 2011 Real Programmers. All rights reserved.
"""

import json

import os
import sys
import unittest
import urllib
from google.refine import Facet, TextFacet, NumericFacet, Engine, FacetsResponse

class FacetTest(unittest.TestCase):
    def test_init(self):
        facet = TextFacet('column name')
        engine = Engine(facet)
        self.assertEqual(facet.selection, [])
        self.assertTrue(str(engine))

    def test_serialize(self):
        engine = Engine()
        engine_json = engine.as_json()
        self.assertEqual(engine_json, '{"facets": [], "mode": "row-based"}')
        facet = TextFacet(column='column')
        self.assertEqual(facet.as_dict(), {'selectError': False, 'name': 'column', 'selection': [], 'expression': 'value', 'invert': False, 'columnName': 'column', 'selectBlank': False, 'omitBlank': False, 'type': 'list', 'omitError': False})
        facet = NumericFacet(column='column')
        self.assertEqual(facet.as_dict(), {'selectBlank': True, 'name': 'column', 'selectError': True, 'expression': 'value', 'selection': [], 'selectNumeric': True, 'columnName': 'column', 'selectNonNumeric': True, 'type': 'range'})        

    def test_add_facet(self):
        facet = TextFacet(column='Party Code')
        engine = Engine(facet)
        engine.add_facet(TextFacet(column='Ethnicity'))
        self.assertEqual(len(engine.facets), 2)
        self.assertEqual(len(engine), 2)

    def test_selections(self):
        facet = TextFacet('column name')
        facet.include('element')
        self.assertEqual(len(facet.selection), 1)
        facet.include('element 2')
        self.assertEqual(len(facet.selection), 2)
        facet.exclude('element')
        self.assertEqual(len(facet.selection), 1)
        facet.reset()
        self.assertEqual(len(facet.selection), 0)


    def test_facets_response(self):
        response = """{"facets":[{"name":"Party Code","expression":"value","columnName":"Party Code","invert":false,"choices":[{"v":{"v":"D","l":"D"},"c":3700,"s":false},{"v":{"v":"R","l":"R"},"c":1613,"s":false},{"v":{"v":"N","l":"N"},"c":15,"s":false},{"v":{"v":"O","l":"O"},"c":184,"s":false}],"blankChoice":{"s":false,"c":1446}}],"mode":"row-based"}"""
        response = FacetsResponse(json.loads(response))
        facets = response.facets
        self.assertEqual(facets[0].choices['D'].count, 3700)
        self.assertEqual(facets[0].blank_choice.count, 1446)


if __name__ == '__main__':
    unittest.main()