#
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements.  See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License.  You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#

from __future__ import absolute_import

import datetime
import decimal
import json
import logging
import re
import time
import unittest

import mock
from future.utils import iteritems

import apache_beam as beam
from apache_beam.internal.gcp.json_value import to_json_value
from apache_beam.io.gcp.bigquery import TableRowJsonCoder
from apache_beam.io.gcp.bigquery_test import HttpError
from apache_beam.io.gcp.bigquery_tools import JSON_COMPLIANCE_ERROR
from apache_beam.io.gcp.bigquery_tools import RowAsDictJsonCoder
from apache_beam.io.gcp.bigquery_tools import parse_table_schema_from_json
from apache_beam.io.gcp.internal.clients import bigquery
from apache_beam.options.pipeline_options import PipelineOptions


@unittest.skipIf(HttpError is None, 'GCP dependencies are not installed')
class TestTableSchemaParser(unittest.TestCase):
  def test_parse_table_schema_from_json(self):
    string_field = bigquery.TableFieldSchema(
        name='s', type='STRING', mode='NULLABLE', description='s description')
    number_field = bigquery.TableFieldSchema(
        name='n', type='INTEGER', mode='REQUIRED', description='n description')
    record_field = bigquery.TableFieldSchema(
        name='r', type='RECORD', mode='REQUIRED', description='r description',
        fields=[string_field, number_field])
    expected_schema = bigquery.TableSchema(fields=[record_field])
    json_str = json.dumps({'fields': [
        {'name': 'r', 'type': 'RECORD', 'mode': 'REQUIRED',
         'description': 'r description', 'fields': [
             {'name': 's', 'type': 'STRING', 'mode': 'NULLABLE',
              'description': 's description'},
             {'name': 'n', 'type': 'INTEGER', 'mode': 'REQUIRED',
              'description': 'n description'}]}]})
    self.assertEqual(parse_table_schema_from_json(json_str),
                     expected_schema)


@unittest.skipIf(HttpError is None, 'GCP dependencies are not installed')
class TestBigQueryWrapper(unittest.TestCase):

  def test_delete_non_existing_dataset(self):
    client = mock.Mock()
    client.datasets.Delete.side_effect = HttpError(
        response={'status': '404'}, url='', content='')
    wrapper = beam.io.gcp.bigquery_tools.BigQueryWrapper(client)
    wrapper._delete_dataset('', '')
    self.assertTrue(client.datasets.Delete.called)

  @mock.patch('time.sleep', return_value=None)
  def test_delete_dataset_retries_fail(self, patched_time_sleep):
    client = mock.Mock()
    client.datasets.Delete.side_effect = ValueError("Cannot delete")
    wrapper = beam.io.gcp.bigquery_tools.BigQueryWrapper(client)
    with self.assertRaises(ValueError):
      wrapper._delete_dataset('', '')
    self.assertEqual(
        beam.io.gcp.bigquery_tools.MAX_RETRIES + 1,
        client.datasets.Delete.call_count)
    self.assertTrue(client.datasets.Delete.called)

  def test_delete_non_existing_table(self):
    client = mock.Mock()
    client.tables.Delete.side_effect = HttpError(
        response={'status': '404'}, url='', content='')
    wrapper = beam.io.gcp.bigquery_tools.BigQueryWrapper(client)
    wrapper._delete_table('', '', '')
    self.assertTrue(client.tables.Delete.called)

  @mock.patch('time.sleep', return_value=None)
  def test_delete_table_retries_fail(self, patched_time_sleep):
    client = mock.Mock()
    client.tables.Delete.side_effect = ValueError("Cannot delete")
    wrapper = beam.io.gcp.bigquery_tools.BigQueryWrapper(client)
    with self.assertRaises(ValueError):
      wrapper._delete_table('', '', '')
    self.assertTrue(client.tables.Delete.called)

  @mock.patch('time.sleep', return_value=None)
  def test_delete_dataset_retries_for_timeouts(self, patched_time_sleep):
    client = mock.Mock()
    client.datasets.Delete.side_effect = [
        HttpError(response={'status': '408'}, url='', content=''),
        bigquery.BigqueryDatasetsDeleteResponse()
    ]
    wrapper = beam.io.gcp.bigquery_tools.BigQueryWrapper(client)
    wrapper._delete_dataset('', '')
    self.assertTrue(client.datasets.Delete.called)

  @mock.patch('time.sleep', return_value=None)
  def test_delete_table_retries_for_timeouts(self, patched_time_sleep):
    client = mock.Mock()
    client.tables.Delete.side_effect = [
        HttpError(response={'status': '408'}, url='', content=''),
        bigquery.BigqueryTablesDeleteResponse()
    ]
    wrapper = beam.io.gcp.bigquery_tools.BigQueryWrapper(client)
    wrapper._delete_table('', '', '')
    self.assertTrue(client.tables.Delete.called)

  @mock.patch('time.sleep', return_value=None)
  def test_temporary_dataset_is_unique(self, patched_time_sleep):
    client = mock.Mock()
    client.datasets.Get.return_value = bigquery.Dataset(
        datasetReference=bigquery.DatasetReference(
            projectId='project_id', datasetId='dataset_id'))
    wrapper = beam.io.gcp.bigquery_tools.BigQueryWrapper(client)
    with self.assertRaises(RuntimeError):
      wrapper.create_temporary_dataset('project_id', 'location')
    self.assertTrue(client.datasets.Get.called)

  def test_get_or_create_dataset_created(self):
    client = mock.Mock()
    client.datasets.Get.side_effect = HttpError(
        response={'status': '404'}, url='', content='')
    client.datasets.Insert.return_value = bigquery.Dataset(
        datasetReference=bigquery.DatasetReference(
            projectId='project_id', datasetId='dataset_id'))
    wrapper = beam.io.gcp.bigquery_tools.BigQueryWrapper(client)
    new_dataset = wrapper.get_or_create_dataset('project_id', 'dataset_id')
    self.assertEqual(new_dataset.datasetReference.datasetId, 'dataset_id')

  def test_get_or_create_dataset_fetched(self):
    client = mock.Mock()
    client.datasets.Get.return_value = bigquery.Dataset(
        datasetReference=bigquery.DatasetReference(
            projectId='project_id', datasetId='dataset_id'))
    wrapper = beam.io.gcp.bigquery_tools.BigQueryWrapper(client)
    new_dataset = wrapper.get_or_create_dataset('project_id', 'dataset_id')
    self.assertEqual(new_dataset.datasetReference.datasetId, 'dataset_id')

  def test_get_or_create_table(self):
    client = mock.Mock()
    client.tables.Insert.return_value = 'table_id'
    client.tables.Get.side_effect = [None, 'table_id']
    wrapper = beam.io.gcp.bigquery_tools.BigQueryWrapper(client)
    new_table = wrapper.get_or_create_table(
        'project_id', 'dataset_id', 'table_id',
        bigquery.TableSchema(fields=[
            bigquery.TableFieldSchema(name='b', type='BOOLEAN',
                                      mode='REQUIRED')]), False, False)
    self.assertEqual(new_table, 'table_id')

  def test_get_or_create_table_race_condition(self):
    client = mock.Mock()
    client.tables.Insert.side_effect = HttpError(
        response={'status': '409'}, url='', content='')
    client.tables.Get.side_effect = [None, 'table_id']
    wrapper = beam.io.gcp.bigquery_tools.BigQueryWrapper(client)
    new_table = wrapper.get_or_create_table(
        'project_id', 'dataset_id', 'table_id',
        bigquery.TableSchema(fields=[
            bigquery.TableFieldSchema(name='b', type='BOOLEAN',
                                      mode='REQUIRED')]), False, False)
    self.assertEqual(new_table, 'table_id')

  def test_get_or_create_table_intermittent_exception(self):
    client = mock.Mock()
    client.tables.Insert.side_effect = [
        HttpError(response={'status': '408'}, url='', content=''), 'table_id'
    ]
    client.tables.Get.side_effect = [None, 'table_id']
    wrapper = beam.io.gcp.bigquery_tools.BigQueryWrapper(client)
    new_table = wrapper.get_or_create_table(
        'project_id', 'dataset_id', 'table_id',
        bigquery.TableSchema(fields=[
            bigquery.TableFieldSchema(
                name='b', type='BOOLEAN', mode='REQUIRED')
        ]), False, False)
    self.assertEqual(new_table, 'table_id')


@unittest.skipIf(HttpError is None, 'GCP dependencies are not installed')
class TestBigQueryReader(unittest.TestCase):

  def get_test_rows(self):
    now = time.time()
    dt = datetime.datetime.utcfromtimestamp(float(now))
    ts = dt.strftime('%Y-%m-%d %H:%M:%S.%f UTC')
    expected_rows = [
        {
            'i': 1,
            's': 'abc',
            'f': 2.3,
            'b': True,
            't': ts,
            'dt': '2016-10-31',
            'ts': '22:39:12.627498',
            'dt_ts': '2008-12-25T07:30:00',
            'r': {'s2': 'b'},
            'rpr': [{'s3': 'c', 'rpr2': [{'rs': ['d', 'e'], 's4': None}]}]
        },
        {
            'i': 10,
            's': 'xyz',
            'f': -3.14,
            'b': False,
            'rpr': [],
            't': None,
            'dt': None,
            'ts': None,
            'dt_ts': None,
            'r': None,
        }]

    nested_schema = [
        bigquery.TableFieldSchema(
            name='s2', type='STRING', mode='NULLABLE')]
    nested_schema_2 = [
        bigquery.TableFieldSchema(
            name='s3', type='STRING', mode='NULLABLE'),
        bigquery.TableFieldSchema(
            name='rpr2', type='RECORD', mode='REPEATED', fields=[
                bigquery.TableFieldSchema(
                    name='rs', type='STRING', mode='REPEATED'),
                bigquery.TableFieldSchema(
                    name='s4', type='STRING', mode='NULLABLE')])]

    schema = bigquery.TableSchema(
        fields=[
            bigquery.TableFieldSchema(
                name='b', type='BOOLEAN', mode='REQUIRED'),
            bigquery.TableFieldSchema(
                name='f', type='FLOAT', mode='REQUIRED'),
            bigquery.TableFieldSchema(
                name='i', type='INTEGER', mode='REQUIRED'),
            bigquery.TableFieldSchema(
                name='s', type='STRING', mode='REQUIRED'),
            bigquery.TableFieldSchema(
                name='t', type='TIMESTAMP', mode='NULLABLE'),
            bigquery.TableFieldSchema(
                name='dt', type='DATE', mode='NULLABLE'),
            bigquery.TableFieldSchema(
                name='ts', type='TIME', mode='NULLABLE'),
            bigquery.TableFieldSchema(
                name='dt_ts', type='DATETIME', mode='NULLABLE'),
            bigquery.TableFieldSchema(
                name='r', type='RECORD', mode='NULLABLE',
                fields=nested_schema),
            bigquery.TableFieldSchema(
                name='rpr', type='RECORD', mode='REPEATED',
                fields=nested_schema_2)])

    table_rows = [
        bigquery.TableRow(f=[
            bigquery.TableCell(v=to_json_value('true')),
            bigquery.TableCell(v=to_json_value(str(2.3))),
            bigquery.TableCell(v=to_json_value(str(1))),
            bigquery.TableCell(v=to_json_value('abc')),
            # For timestamps cannot use str() because it will truncate the
            # number representing the timestamp.
            bigquery.TableCell(v=to_json_value('%f' % now)),
            bigquery.TableCell(v=to_json_value('2016-10-31')),
            bigquery.TableCell(v=to_json_value('22:39:12.627498')),
            bigquery.TableCell(v=to_json_value('2008-12-25T07:30:00')),
            # For record we cannot use dict because it doesn't create nested
            # schemas correctly so we have to use this f,v based format
            bigquery.TableCell(v=to_json_value({'f': [{'v': 'b'}]})),
            bigquery.TableCell(v=to_json_value([
                {'v': {'f': [{'v': 'c'}, {'v': [
                    {'v': {'f': [{'v': [{'v': 'd'}, {'v': 'e'}]}, {'v': None}]}}
                ]}]}}]))
        ]),
        bigquery.TableRow(f=[
            bigquery.TableCell(v=to_json_value('false')),
            bigquery.TableCell(v=to_json_value(str(-3.14))),
            bigquery.TableCell(v=to_json_value(str(10))),
            bigquery.TableCell(v=to_json_value('xyz')),
            bigquery.TableCell(v=None),
            bigquery.TableCell(v=None),
            bigquery.TableCell(v=None),
            bigquery.TableCell(v=None),
            bigquery.TableCell(v=None),
            # REPEATED field without any values.
            bigquery.TableCell(v=None)])]
    return table_rows, schema, expected_rows

  def test_read_from_table(self):
    client = mock.Mock()
    client.jobs.Insert.return_value = bigquery.Job(
        jobReference=bigquery.JobReference(
            jobId='somejob'))
    table_rows, schema, expected_rows = self.get_test_rows()
    client.jobs.GetQueryResults.return_value = bigquery.GetQueryResultsResponse(
        jobComplete=True, rows=table_rows, schema=schema)
    actual_rows = []
    with beam.io.BigQuerySource('dataset.table').reader(client) as reader:
      for row in reader:
        actual_rows.append(row)
    self.assertEqual(actual_rows, expected_rows)
    self.assertEqual(schema, reader.schema)

  def test_read_from_query(self):
    client = mock.Mock()
    client.jobs.Insert.return_value = bigquery.Job(
        jobReference=bigquery.JobReference(
            jobId='somejob'))
    table_rows, schema, expected_rows = self.get_test_rows()
    client.jobs.GetQueryResults.return_value = bigquery.GetQueryResultsResponse(
        jobComplete=True, rows=table_rows, schema=schema)
    actual_rows = []
    with beam.io.BigQuerySource(query='query').reader(client) as reader:
      for row in reader:
        actual_rows.append(row)
    self.assertEqual(actual_rows, expected_rows)
    self.assertEqual(schema, reader.schema)
    self.assertTrue(reader.use_legacy_sql)
    self.assertTrue(reader.flatten_results)

  def test_read_from_query_sql_format(self):
    client = mock.Mock()
    client.jobs.Insert.return_value = bigquery.Job(
        jobReference=bigquery.JobReference(
            jobId='somejob'))
    table_rows, schema, expected_rows = self.get_test_rows()
    client.jobs.GetQueryResults.return_value = bigquery.GetQueryResultsResponse(
        jobComplete=True, rows=table_rows, schema=schema)
    actual_rows = []
    with beam.io.BigQuerySource(
        query='query', use_standard_sql=True).reader(client) as reader:
      for row in reader:
        actual_rows.append(row)
    self.assertEqual(actual_rows, expected_rows)
    self.assertEqual(schema, reader.schema)
    self.assertFalse(reader.use_legacy_sql)
    self.assertTrue(reader.flatten_results)

  def test_read_from_query_unflatten_records(self):
    client = mock.Mock()
    client.jobs.Insert.return_value = bigquery.Job(
        jobReference=bigquery.JobReference(
            jobId='somejob'))
    table_rows, schema, expected_rows = self.get_test_rows()
    client.jobs.GetQueryResults.return_value = bigquery.GetQueryResultsResponse(
        jobComplete=True, rows=table_rows, schema=schema)
    actual_rows = []
    with beam.io.BigQuerySource(
        query='query', flatten_results=False).reader(client) as reader:
      for row in reader:
        actual_rows.append(row)
    self.assertEqual(actual_rows, expected_rows)
    self.assertEqual(schema, reader.schema)
    self.assertTrue(reader.use_legacy_sql)
    self.assertFalse(reader.flatten_results)

  def test_using_both_query_and_table_fails(self):
    with self.assertRaisesRegexp(
        ValueError,
        r'Both a BigQuery table and a query were specified\. Please specify '
        r'only one of these'):
      beam.io.BigQuerySource(table='dataset.table', query='query')

  def test_using_neither_query_nor_table_fails(self):
    with self.assertRaisesRegexp(
        ValueError, r'A BigQuery table or a query must be specified'):
      beam.io.BigQuerySource()

  def test_read_from_table_as_tablerows(self):
    client = mock.Mock()
    client.jobs.Insert.return_value = bigquery.Job(
        jobReference=bigquery.JobReference(
            jobId='somejob'))
    table_rows, schema, _ = self.get_test_rows()
    client.jobs.GetQueryResults.return_value = bigquery.GetQueryResultsResponse(
        jobComplete=True, rows=table_rows, schema=schema)
    actual_rows = []
    # We set the coder to TableRowJsonCoder, which is a signal that
    # the caller wants to see the rows as TableRows.
    with beam.io.BigQuerySource(
        'dataset.table', coder=TableRowJsonCoder).reader(client) as reader:
      for row in reader:
        actual_rows.append(row)
    self.assertEqual(actual_rows, table_rows)
    self.assertEqual(schema, reader.schema)

  @mock.patch('time.sleep', return_value=None)
  def test_read_from_table_and_job_complete_retry(self, patched_time_sleep):
    client = mock.Mock()
    client.jobs.Insert.return_value = bigquery.Job(
        jobReference=bigquery.JobReference(
            jobId='somejob'))
    table_rows, schema, expected_rows = self.get_test_rows()
    # Return jobComplete=False on first call to trigger the code path where
    # query needs to handle waiting a bit.
    client.jobs.GetQueryResults.side_effect = [
        bigquery.GetQueryResultsResponse(
            jobComplete=False),
        bigquery.GetQueryResultsResponse(
            jobComplete=True, rows=table_rows, schema=schema)]
    actual_rows = []
    with beam.io.BigQuerySource('dataset.table').reader(client) as reader:
      for row in reader:
        actual_rows.append(row)
    self.assertEqual(actual_rows, expected_rows)

  def test_read_from_table_and_multiple_pages(self):
    client = mock.Mock()
    client.jobs.Insert.return_value = bigquery.Job(
        jobReference=bigquery.JobReference(
            jobId='somejob'))
    table_rows, schema, expected_rows = self.get_test_rows()
    # Return a pageToken on first call to trigger the code path where
    # query needs to handle multiple pages of results.
    client.jobs.GetQueryResults.side_effect = [
        bigquery.GetQueryResultsResponse(
            jobComplete=True, rows=table_rows, schema=schema,
            pageToken='token'),
        bigquery.GetQueryResultsResponse(
            jobComplete=True, rows=table_rows, schema=schema)]
    actual_rows = []
    with beam.io.BigQuerySource('dataset.table').reader(client) as reader:
      for row in reader:
        actual_rows.append(row)
    # We return expected rows for each of the two pages of results so we
    # adjust our expectation below accordingly.
    self.assertEqual(actual_rows, expected_rows * 2)

  def test_table_schema_without_project(self):
    # Reader should pick executing project by default.
    source = beam.io.BigQuerySource(table='mydataset.mytable')
    options = PipelineOptions(flags=['--project', 'myproject'])
    source.pipeline_options = options
    reader = source.reader()
    self.assertEqual('SELECT * FROM [myproject:mydataset.mytable];',
                     reader.query)


@unittest.skipIf(HttpError is None, 'GCP dependencies are not installed')
class TestBigQueryWriter(unittest.TestCase):

  @mock.patch('time.sleep', return_value=None)
  def test_no_table_and_create_never(self, patched_time_sleep):
    client = mock.Mock()
    client.tables.Get.side_effect = HttpError(
        response={'status': '404'}, url='', content='')
    create_disposition = beam.io.BigQueryDisposition.CREATE_NEVER
    with self.assertRaisesRegexp(
        RuntimeError, r'Table project:dataset\.table not found but create '
                      r'disposition is CREATE_NEVER'):
      with beam.io.BigQuerySink(
          'project:dataset.table',
          create_disposition=create_disposition).writer(client):
        pass

  def test_no_table_and_create_if_needed(self):
    client = mock.Mock()
    table = bigquery.Table(
        tableReference=bigquery.TableReference(
            projectId='project', datasetId='dataset', tableId='table'),
        schema=bigquery.TableSchema())
    client.tables.Get.side_effect = HttpError(
        response={'status': '404'}, url='', content='')
    client.tables.Insert.return_value = table
    create_disposition = beam.io.BigQueryDisposition.CREATE_IF_NEEDED
    with beam.io.BigQuerySink(
        'project:dataset.table',
        schema='somefield:INTEGER',
        create_disposition=create_disposition).writer(client):
      pass
    self.assertTrue(client.tables.Get.called)
    self.assertTrue(client.tables.Insert.called)

  @mock.patch('time.sleep', return_value=None)
  def test_no_table_and_create_if_needed_and_no_schema(
      self, patched_time_sleep):
    client = mock.Mock()
    client.tables.Get.side_effect = HttpError(
        response={'status': '404'}, url='', content='')
    create_disposition = beam.io.BigQueryDisposition.CREATE_IF_NEEDED
    with self.assertRaisesRegexp(
        RuntimeError, r'Table project:dataset\.table requires a schema\. None '
                      r'can be inferred because the table does not exist'):
      with beam.io.BigQuerySink(
          'project:dataset.table',
          create_disposition=create_disposition).writer(client):
        pass

  @mock.patch('time.sleep', return_value=None)
  def test_table_not_empty_and_write_disposition_empty(
      self, patched_time_sleep):
    client = mock.Mock()
    client.tables.Get.return_value = bigquery.Table(
        tableReference=bigquery.TableReference(
            projectId='project', datasetId='dataset', tableId='table'),
        schema=bigquery.TableSchema())
    client.tabledata.List.return_value = bigquery.TableDataList(totalRows=1)
    write_disposition = beam.io.BigQueryDisposition.WRITE_EMPTY
    with self.assertRaisesRegexp(
        RuntimeError, r'Table project:dataset\.table is not empty but write '
                      r'disposition is WRITE_EMPTY'):
      with beam.io.BigQuerySink(
          'project:dataset.table',
          write_disposition=write_disposition).writer(client):
        pass

  def test_table_empty_and_write_disposition_empty(self):
    client = mock.Mock()
    table = bigquery.Table(
        tableReference=bigquery.TableReference(
            projectId='project', datasetId='dataset', tableId='table'),
        schema=bigquery.TableSchema())
    client.tables.Get.return_value = table
    client.tabledata.List.return_value = bigquery.TableDataList(totalRows=0)
    client.tables.Insert.return_value = table
    write_disposition = beam.io.BigQueryDisposition.WRITE_EMPTY
    with beam.io.BigQuerySink(
        'project:dataset.table',
        write_disposition=write_disposition).writer(client):
      pass
    self.assertTrue(client.tables.Get.called)
    self.assertTrue(client.tabledata.List.called)
    self.assertFalse(client.tables.Delete.called)
    self.assertFalse(client.tables.Insert.called)

  @mock.patch('time.sleep', return_value=None)
  def test_table_with_write_disposition_truncate(self, _patched_sleep):
    client = mock.Mock()
    table = bigquery.Table(
        tableReference=bigquery.TableReference(
            projectId='project', datasetId='dataset', tableId='table'),
        schema=bigquery.TableSchema())
    client.tables.Get.return_value = table
    client.tables.Insert.return_value = table
    write_disposition = beam.io.BigQueryDisposition.WRITE_TRUNCATE
    with beam.io.BigQuerySink(
        'project:dataset.table',
        write_disposition=write_disposition).writer(client):
      pass
    self.assertTrue(client.tables.Get.called)
    self.assertTrue(client.tables.Delete.called)
    self.assertTrue(client.tables.Insert.called)

  def test_table_with_write_disposition_append(self):
    client = mock.Mock()
    table = bigquery.Table(
        tableReference=bigquery.TableReference(
            projectId='project', datasetId='dataset', tableId='table'),
        schema=bigquery.TableSchema())
    client.tables.Get.return_value = table
    client.tables.Insert.return_value = table
    write_disposition = beam.io.BigQueryDisposition.WRITE_APPEND
    with beam.io.BigQuerySink(
        'project:dataset.table',
        write_disposition=write_disposition).writer(client):
      pass
    self.assertTrue(client.tables.Get.called)
    self.assertFalse(client.tables.Delete.called)
    self.assertFalse(client.tables.Insert.called)

  def test_rows_are_written(self):
    client = mock.Mock()
    table = bigquery.Table(
        tableReference=bigquery.TableReference(
            projectId='project', datasetId='dataset', tableId='table'),
        schema=bigquery.TableSchema())
    client.tables.Get.return_value = table
    write_disposition = beam.io.BigQueryDisposition.WRITE_APPEND

    insert_response = mock.Mock()
    insert_response.insertErrors = []
    client.tabledata.InsertAll.return_value = insert_response

    with beam.io.BigQuerySink(
        'project:dataset.table',
        write_disposition=write_disposition).writer(client) as writer:
      writer.Write({'i': 1, 'b': True, 's': 'abc', 'f': 3.14})

    sample_row = {'i': 1, 'b': True, 's': 'abc', 'f': 3.14}
    expected_rows = []
    json_object = bigquery.JsonObject()
    for k, v in iteritems(sample_row):
      json_object.additionalProperties.append(
          bigquery.JsonObject.AdditionalProperty(
              key=k, value=to_json_value(v)))
    expected_rows.append(
        bigquery.TableDataInsertAllRequest.RowsValueListEntry(
            insertId='_1',  # First row ID generated with prefix ''
            json=json_object))
    client.tabledata.InsertAll.assert_called_with(
        bigquery.BigqueryTabledataInsertAllRequest(
            projectId='project', datasetId='dataset', tableId='table',
            tableDataInsertAllRequest=bigquery.TableDataInsertAllRequest(
                rows=expected_rows, skipInvalidRows=False,)))

  def test_table_schema_without_project(self):
    # Writer should pick executing project by default.
    sink = beam.io.BigQuerySink(table='mydataset.mytable')
    options = PipelineOptions(flags=['--project', 'myproject'])
    sink.pipeline_options = options
    writer = sink.writer()
    self.assertEqual('myproject', writer.project_id)


@unittest.skipIf(HttpError is None, 'GCP dependencies are not installed')
class TestRowAsDictJsonCoder(unittest.TestCase):

  def test_row_as_dict(self):
    coder = RowAsDictJsonCoder()
    test_value = {'s': 'abc', 'i': 123, 'f': 123.456, 'b': True}
    self.assertEqual(test_value, coder.decode(coder.encode(test_value)))

  def test_decimal_in_row_as_dict(self):
    decimal_value = decimal.Decimal('123456789.987654321')
    coder = RowAsDictJsonCoder()
    # Bigquery IO uses decimals to represent NUMERIC types.
    # To export to BQ, it's necessary to convert to strings, due to the
    # lower precision of JSON numbers. This means that we can't recognize
    # a NUMERIC when we decode from JSON, thus we match the string here.
    test_value = {'f': 123.456,
                  'b': True,
                  'numerico': decimal_value}
    output_value = {'f': 123.456,
                    'b': True,
                    'numerico': str(decimal_value)}
    self.assertEqual(output_value, coder.decode(coder.encode(test_value)))

  def json_compliance_exception(self, value):
    with self.assertRaisesRegexp(ValueError, re.escape(JSON_COMPLIANCE_ERROR)):
      coder = RowAsDictJsonCoder()
      test_value = {'s': value}
      coder.decode(coder.encode(test_value))

  def test_invalid_json_nan(self):
    self.json_compliance_exception(float('nan'))

  def test_invalid_json_inf(self):
    self.json_compliance_exception(float('inf'))

  def test_invalid_json_neg_inf(self):
    self.json_compliance_exception(float('-inf'))


if __name__ == '__main__':
  logging.getLogger().setLevel(logging.INFO)
  unittest.main()