Haketilo

        'hash_key': f'sha256-{sha256(contents.encode()).digest().hex()}',

        'contents': contents

    'combined.js':              sample_file('console.log("hello!\\nbye!");\n'),

sample_files_by_hash = dict([[file['hash_key'], file['contents']]

                             for file in sample_files.values()])

    return {'file': file_name, 'hash_key': sample_files[file_name]['hash_key']}

def test_save_remove_item(execute_in_page, indexeddb_code):

        async function get_database_contents()

        const promise = start_items_transaction(["resources"], arguments[1])

            .then(ctx => save_item(arguments[0], ctx).then(() => ctx))

            .then(finalize_items_transaction)

            .then(get_database_contents);

        returnval(promise);

        sample_item, sample_files_by_hash)

    assert all([sample_files_by_hash[file['hash_key']] == file['contents']

    assert set([uses['hash_key'] for uses in database_contents['file_uses']]) \

        == set([file['hash_key'] for file in database_contents['files']])

    # See if trying to add an item without providing all its files ends in an

    # exception and aborts the transaction as it should.

    sample_item['scripts'].append(file_ref('combined.js'))

    incomplete_files = {**sample_files_by_hash}

    incomplete_files.pop(sample_files['combined.js']['hash_key'])

    print ('incomplete files:', incomplete_files)

    print ('sample item:', sample_item)

    result = execute_in_page(

        '''{

        console.log('sample item', arguments[0]);

        const promise = (async () => {

            const context =

                await start_items_transaction(["resources"], arguments[1]);

            try {

                await save_item(arguments[0], context);

                await finalize_items_transaction(context);

                return {};

            } catch(e) {

                var exception = e;

            }

            return {exception, db_contents: await get_database_contents()};

        })();

        returnval(promise);

        }''',

        sample_item, incomplete_files)

    assert result

    assert 'file not present' in result['exception']

    for key, val in database_contents.items():

        keyfun = lambda item: item.get('hash_key') or item['identifier']

        assert sorted(result['db_contents'][key], key=keyfun) \

            == sorted(val,                        key=keyfun)

    # See if adding another item that partially uses first's files works OK.

    sample_item = {

        'source_copyright': [

            file_ref('report.spdx'),

            file_ref('README.md')

        ],

        'type': 'mapping',

        'identifier': 'helloapple',

    }

    database_contents = execute_in_page(

        '''{

        const promise = start_items_transaction(["mappings"], arguments[1])

            .then(ctx => save_item(arguments[0], ctx).then(() => ctx))

            .then(finalize_items_transaction)

            .then(get_database_contents);

        returnval(promise);

        }''',

        sample_item, sample_files_by_hash)

    names = ['README.md', 'report.spdx', 'LICENSES/somelicense.txt', 'hello.js',

             'bye.js']

    sample_files_list = [sample_files[name] for name in names]

    uses_list = [1, 2, 1, 1, 1]

    uses = dict([(uses['hash_key'], uses['uses'])

                 for uses in database_contents['file_uses']])

    assert uses  == dict([(file['hash_key'], nr)

                          for file, nr in zip(sample_files_list, uses_list)])

    files = dict([(file['hash_key'], file['contents'])

                  for file in database_contents['files']])

    assert files == dict([(file['hash_key'], file['contents'])

                          for file in sample_files_list])

    assert database_contents['mappings'] == [sample_item]

    # Try removing the items to get an empty database again.

    results = [None, None]

    for i, item_type in enumerate(['resource', 'mapping']):

         results[i] = execute_in_page(

            f'''{{

            const remover = remove_{item_type};

            const promise =

                start_items_transaction(["{item_type}s"], {{}})

                .then(ctx => remover('helloapple', ctx).then(() => ctx))

                .then(finalize_items_transaction)

                .then(get_database_contents);

            returnval(promise);

            }}''')

    names = ['README.md', 'report.spdx']

    sample_files_list = [sample_files[name] for name in names]

    uses_list = [1, 1]

    uses = dict([(uses['hash_key'], uses['uses'])

                 for uses in results[0]['file_uses']])

    assert uses  == dict([(file['hash_key'], 1) for file in sample_files_list])

    files = dict([(file['hash_key'], file['contents'])

                  for file in results[0]['files']])

    assert files == dict([(file['hash_key'], file['contents'])

                          for file in sample_files_list])

    assert results[0]['resources'] == []

    assert results[0]['mappings'] == [sample_item]

    assert results[1] == dict([(key, []) for key in  results[0].keys()])