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test_transform.py
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import unittest
from singer import transform
from singer.transform import *
class TestTransform(unittest.TestCase):
def test_integer_transform(self):
schema = {'type': 'integer'}
self.assertEqual(123, transform(123, schema))
self.assertEqual(123, transform('123', schema))
self.assertEqual(1234, transform('1,234', schema))
def test_nested_transform(self):
schema = {"type": "object",
"properties": {"addrs": {"type": "array",
"items": {"type": "object",
"properties": {"addr1": {"type": "string"},
"city": {"type": "string"},
"state": {"type": "string"},
'amount': {'type': 'integer'}}}}}}
data = {'addrs': [{'amount': '123'}, {'amount': '456'}]}
expected = {'addrs': [{'amount': 123}, {'amount': 456}]}
self.assertDictEqual(expected, transform(data, schema))
def test_null_transform(self):
self.assertEqual('', transform('', {'type': ['null', 'string']}))
self.assertEqual('', transform('', {'type': [ 'string', 'null']}))
self.assertEqual(None, transform(None, {'type': [ 'string', 'null']}))
self.assertEqual(None, transform('', {'type': ['null']}))
self.assertEqual(None, transform(None, {'type': ['null']}))
def test_datetime_transform(self):
schema = {"type": "string", "format": "date-time"}
string_datetime = "2017-01-01T00:00:00Z"
transformed_string_datetime = "2017-01-01T00:00:00.000000Z"
self.assertEqual(transformed_string_datetime, transform(string_datetime, schema, NO_INTEGER_DATETIME_PARSING))
self.assertEqual('1970-01-02T00:00:00.000000Z', transform(86400, schema, UNIX_SECONDS_INTEGER_DATETIME_PARSING))
self.assertEqual(transformed_string_datetime, transform(string_datetime, schema, UNIX_SECONDS_INTEGER_DATETIME_PARSING))
self.assertEqual('1970-01-01T00:01:26.400000Z', transform(86400, schema, UNIX_MILLISECONDS_INTEGER_DATETIME_PARSING))
self.assertEqual(transformed_string_datetime, transform(string_datetime, schema, UNIX_MILLISECONDS_INTEGER_DATETIME_PARSING))
trans = Transformer(NO_INTEGER_DATETIME_PARSING)
self.assertIsNone(trans._transform_datetime('cat'))
self.assertIsNone(trans._transform_datetime(0))
trans.integer_datetime_fmt = UNIX_SECONDS_INTEGER_DATETIME_PARSING
self.assertIsNone(trans._transform_datetime('cat'))
def test_datetime_fractional_seconds_transform(self):
schema = {"type": "string", "format": "date-time"}
string_datetime = "2017-01-01T00:00:00.123000Z"
self.assertEqual(string_datetime, transform(string_datetime, schema, NO_INTEGER_DATETIME_PARSING))
def test_anyof_datetime(self):
schema = {'anyOf': [{'type': 'null'}, {'format': 'date-time', 'type': 'string'}]}
string_datetime = '2016-03-10T18:47:20Z'
transformed_string_datetime = '2016-03-10T18:47:20.000000Z'
self.assertEqual(transformed_string_datetime, transform(string_datetime, schema))
self.assertIsNone(transform(None, schema))
def test_error_path(self):
schema = {"type": "object",
"properties": {"foo": {"type": "integer"},
"baz": {"type": "integer"}}}
data = {"foo": "bar", "baz": 1}
trans = Transformer(NO_INTEGER_DATETIME_PARSING)
success, data = trans.transform_recur(data, schema, [])
self.assertFalse(success)
self.assertIsNone(data)
self.assertListEqual([[], ["foo"]], sorted(e.path for e in trans.errors))
def test_nested_error_path_throws(self):
schema = {
"type": "object",
"properties": {
"key1": {
"type": "object",
"properties": {
"key2": {
"type": "object",
"properties": {
"key3": {
"type": "object",
"properties": {
"key4": {"type": "integer"},
},
},
},
},
},
},
},
}
data = {"key1": {"key2": {"key3": {"key4": "not an integer"}}}}
trans = Transformer()
success, _ = trans.transform_recur(data, schema, [])
self.assertFalse(success)
expected = [
[],
['key1'],
['key1', 'key2'],
['key1', 'key2', 'key3'],
['key1', 'key2', 'key3', 'key4'],
]
self.assertListEqual(expected, sorted(e.path for e in trans.errors))
def test_nested_error_path_no_throw(self):
schema = {
"type": "object",
"properties": {
"key1": {
"type": "object",
"properties": {
"key2": {
"type": "object",
"properties": {
"key3": {
"type": "object",
"properties": {
"key4": {"type": "string"},
"key5": {"type": "string"},
},
},
},
},
},
},
},
}
data = {"key1": {"key2": {"key3": {"key4": None, "key5": None}}}}
trans = Transformer()
success, data = trans.transform_recur(data, schema, [])
self.assertFalse(success)
self.assertIsNone(data)
expected = [
[],
['key1'],
['key1', 'key2'],
['key1', 'key2', 'key3'],
['key1', 'key2', 'key3', 'key4'],
['key1', 'key2', 'key3', 'key5'],
]
self.assertListEqual(expected, sorted(e.path for e in trans.errors))
def test_error_path_array(self):
schema = {"type": "object",
"properties": {"integers": {"type": "array",
"items": {"type": "integer"}}}}
data = {"integers": [1, 2, "not an integer", 4, "also not an integer"]}
trans = Transformer()
success, data = trans.transform_recur(data, schema, [])
self.assertFalse(success)
expected = [
[],
['integers'],
['integers', 2],
['integers', 4],
]
self.assertListEqual(expected, sorted(e.path for e in trans.errors))
def test_nested_error_path_array(self):
schema = {"type": "object",
"properties": {"lists_of_integers": {"type": "array",
"items": {"type": "array",
"items": {"type": "integer"}}}}}
data = {"lists_of_integers": [[1, "not an integer"], [2, 3], ["also not an integer", 4]]}
trans = Transformer()
success, transformed_data = trans.transform_recur(data, schema, [])
self.assertFalse(success)
expected = [
[],
['lists_of_integers'],
['lists_of_integers', 0],
['lists_of_integers', 0, 1],
['lists_of_integers', 2],
['lists_of_integers', 2, 0],
]
self.assertListEqual(expected, sorted(e.path for e in trans.errors))
def test_error_path_datetime(self):
schema = {"type": "object",
"properties": {"good_datetime": {"type": "string", "format": "date-time"},
"bad_datetime1": {"type": "string", "format": "date-time"},
"bad_datetime2": {"type": "string", "format": "date-time"}}}
data = {"good_datetime": "2017-04-11T16:07:00Z",
"bad_datetime1": "not a datetime",
"bad_datetime2": 1}
trans = Transformer()
success, transformed_data = trans.transform_recur(data, schema, [])
self.assertFalse(success)
expected = [
[],
['bad_datetime1'],
['bad_datetime2'],
]
self.assertListEqual(expected, sorted(e.path for e in trans.errors))
def test_unexpected_object_properties(self):
schema = {"type": "object",
"properties": {"good_property": {"type": "string"}}}
data = {"good_property": "expected data",
"bad_property": "unexpected data"}
trans = Transformer()
success, transformed_data = trans.transform_recur(data, schema, [])
self.assertTrue(success)
self.assertDictEqual({"good_property": "expected data"}, transformed_data)
self.assertSetEqual(set(["bad_property"]), trans.removed)
self.assertListEqual([], trans.errors)