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How to use foreign_key_name method in autotest

Best Python code snippet using autotest_python

test_foreign_keys.py

Source:test_foreign_keys.py

1# nuScenes dev-kit.2# Code written by Holger Caesar, 2020.3import itertools4import os5import unittest6from collections import defaultdict7from typing import List, Dict, Any8from nuimages.nuimages import NuImages9class TestForeignKeys(unittest.TestCase):10    def __init__(self, _: Any = None, version: str = 'v1.0-mini', dataroot: str = None):11        """12        Initialize TestForeignKeys.13        Note: The second parameter is a dummy parameter required by the TestCase class.14        :param version: The NuImages version.15        :param dataroot: The root folder where the dataset is installed.16        """17        super().__init__()18        self.version = version19        if dataroot is None:20            self.dataroot = os.environ['NUIMAGES']21        else:22            self.dataroot = dataroot23        self.nuim = NuImages(version=self.version, dataroot=self.dataroot, verbose=False)24    def runTest(self) -> None:25        """26        Dummy function required by the TestCase class.27        """28        pass29    def test_foreign_keys(self) -> None:30        """31        Test that every foreign key points to a valid token.32        """33        # Index the tokens of all tables.34        index = dict()35        for table_name in self.nuim.table_names:36            print('Indexing table %s...' % table_name)37            table: list = self.nuim.__getattr__(table_name)38            tokens = [row['token'] for row in table]39            index[table_name] = set(tokens)40        # Go through each table and check the foreign_keys.41        for table_name in self.nuim.table_names:42            table: List[Dict[str, Any]] = self.nuim.__getattr__(table_name)43            if self.version.endswith('-test') and len(table) == 0:  # Skip test annotations.44                continue45            keys = table[0].keys()46            # Check 1-to-1 link.47            one_to_one_names = [k for k in keys if k.endswith('_token') and not k.startswith('key_')]48            for foreign_key_name in one_to_one_names:49                print('Checking one-to-one key %s in table %s...' % (foreign_key_name, table_name))50                foreign_table_name = foreign_key_name.replace('_token', '')51                foreign_tokens = set([row[foreign_key_name] for row in table])52                # Check all tokens are valid.53                if self.version.endswith('-mini') and foreign_table_name == 'category':54                    continue  # Mini does not cover all categories.55                foreign_index = index[foreign_table_name]56                self.assertTrue(foreign_tokens.issubset(foreign_index))57                # Check all tokens are covered.58                # By default we check that all tokens are covered. Exceptions are listed below.59                if table_name == 'object_ann':60                    if foreign_table_name == 'category':61                        remove = set([cat['token'] for cat in self.nuim.category if cat['name']62                                      in ['vehicle.ego', 'flat.driveable_surface']])63                        foreign_index = foreign_index.difference(remove)64                    elif foreign_table_name == 'sample_data':65                        foreign_index = None  # Skip as sample_datas may have no object_ann.66                elif table_name == 'surface_ann':67                    if foreign_table_name == 'category':68                        remove = set([cat['token'] for cat in self.nuim.category if cat['name']69                                      not in ['vehicle.ego', 'flat.driveable_surface']])70                        foreign_index = foreign_index.difference(remove)71                    elif foreign_table_name == 'sample_data':72                        foreign_index = None  # Skip as sample_datas may have no surface_ann.73                if foreign_index is not None:74                    self.assertEqual(foreign_tokens, foreign_index)75            # Check 1-to-many link.76            one_to_many_names = [k for k in keys if k.endswith('_tokens')]77            for foreign_key_name in one_to_many_names:78                print('Checking one-to-many key %s in table %s...' % (foreign_key_name, table_name))79                foreign_table_name = foreign_key_name.replace('_tokens', '')80                foreign_tokens_nested = [row[foreign_key_name] for row in table]81                foreign_tokens = set(itertools.chain(*foreign_tokens_nested))82                # Check that all tokens are valid.83                foreign_index = index[foreign_table_name]84                self.assertTrue(foreign_tokens.issubset(foreign_index))85                # Check all tokens are covered.86                if self.version.endswith('-mini') and foreign_table_name == 'attribute':87                    continue  # Mini does not cover all categories.88                if foreign_index is not None:89                    self.assertEqual(foreign_tokens, foreign_index)90            # Check prev and next.91            prev_next_names = [k for k in keys if k in ['previous', 'next']]92            for foreign_key_name in prev_next_names:93                print('Checking prev-next key %s in table %s...' % (foreign_key_name, table_name))94                foreign_table_name = table_name95                foreign_tokens = set([row[foreign_key_name] for row in table if len(row[foreign_key_name]) > 0])96                # Check that all tokens are valid.97                foreign_index = index[foreign_table_name]98                self.assertTrue(foreign_tokens.issubset(foreign_index))99    def test_prev_next(self) -> None:100        """101        Test that the prev and next points in sample_data cover all entries and have the correct ordering.102        """103        # Register all sample_datas.104        sample_to_sample_datas = defaultdict(lambda: [])105        for sample_data in self.nuim.sample_data:106            sample_to_sample_datas[sample_data['sample_token']].append(sample_data['token'])107        print('Checking prev-next pointers for completeness and correct ordering...')108        for sample in self.nuim.sample:109            # Compare the above sample_datas against those retrieved by using prev and next pointers.110            sd_tokens_pointers = self.nuim.get_sample_content(sample['token'])111            sd_tokens_all = sample_to_sample_datas[sample['token']]112            self.assertTrue(set(sd_tokens_pointers) == set(sd_tokens_all),113                            'Error: Inconsistency in prev/next pointers!')114            timestamps = []115            for sd_token in sd_tokens_pointers:116                sample_data = self.nuim.get('sample_data', sd_token)117                timestamps.append(sample_data['timestamp'])118            self.assertTrue(sorted(timestamps) == timestamps, 'Error: Timestamps not properly sorted!')119if __name__ == '__main__':120    # Runs the tests without aborting on error.121    for nuim_version in ['v1.0-train', 'v1.0-val', 'v1.0-test', 'v1.0-mini']:122        print('Running TestForeignKeys for version %s...' % nuim_version)123        test = TestForeignKeys(version=nuim_version)124        test.test_foreign_keys()125        test.test_prev_next()...

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