def deploy_service_registry_and_set_urls(
    private_keys, web3, contract_manager, service_registry_address
) -> Tuple[ServiceRegistry, List[str]]:
    urls = ["http://foo", "http://boo", "http://coo"]
    c1_client = JSONRPCClient(web3, private_keys[0])
    c1_service_proxy = ServiceRegistry(
        jsonrpc_client=c1_client,
        service_registry_address=service_registry_address,
        contract_manager=contract_manager,
    )
    c2_client = JSONRPCClient(web3, private_keys[1])
    c2_service_proxy = ServiceRegistry(
        jsonrpc_client=c2_client,
        service_registry_address=service_registry_address,
        contract_manager=contract_manager,
    )
    c3_client = JSONRPCClient(web3, private_keys[2])
    c3_service_proxy = ServiceRegistry(
        jsonrpc_client=c3_client,
        service_registry_address=service_registry_address,
        contract_manager=contract_manager,
    )

    # Test that getting a random service for an empty registry returns None
    pfs_address = get_random_service(c1_service_proxy, "latest")
    assert pfs_address is None

    # Test that setting the urls works
    c1_service_proxy.set_url(urls[0])
    c2_service_proxy.set_url(urls[1])
    c3_service_proxy.set_url(urls[2])

    return c1_service_proxy, urls
def test_convert_html_in_suggestion_change(self):
        html_content = (
            '<p>Value</p><oppia-noninteractive-math raw_latex-with-value="&a'
            'mp;quot;+,-,-,+&amp;quot;"></oppia-noninteractive-math>')
        expected_html_content = (
            '<p>Value</p><oppia-noninteractive-math math_content-with-value='
            '"{&amp;quot;raw_latex&amp;quot;: &amp;quot;+,-,-,+&amp;quot;, &'
            'amp;quot;svg_filename&amp;quot;: &amp;quot;&amp;quot;}"></oppia'
            '-noninteractive-math>')
        change_dict = {
            'cmd': exp_domain.CMD_ADD_WRITTEN_TRANSLATION,
            'state_name': 'Introduction',
            'content_id': 'content',
            'language_code': 'hi',
            'content_html': html_content,
            'translation_html': '<p>This is translated html.</p>',
            'data_format': 'html'
        }
        suggestion = suggestion_registry.SuggestionTranslateContent(
            self.suggestion_dict['suggestion_id'],
            self.suggestion_dict['target_id'],
            self.suggestion_dict['target_version_at_submission'],
            self.suggestion_dict['status'], self.author_id,
            self.reviewer_id, change_dict,
            self.suggestion_dict['score_category'],
            self.suggestion_dict['language_code'], False, self.fake_date)
        suggestion.convert_html_in_suggestion_change(
            html_validation_service.add_math_content_to_math_rte_components)
        self.assertEqual(
            suggestion.change.content_html, expected_html_content)