Code review comment: Please check all `assertEquals` and replace with `assertThat`.

Code under review:
public void assertDataSourceGeneratedDatabaseConfiguration() {
        String url = "jdbc:mysql:
        String username = "root";
        String password = "root";
        ConnectionConfiguration configuration = new ConnectionConfiguration(url, username, password);
        PoolConfiguration poolConfiguration = new PoolConfiguration(2000L, 1000L, 1000L, 6, 2, false, new Properties());
        DataSourceConfiguration dataSourceConfiguration = new DataSourceConfiguration(configuration, poolConfiguration);
        Map<String, DataSourceConfiguration> dataSources = new HashMap<>(1);
        dataSources.put("dsc", dataSourceConfiguration);
        DataSourceGeneratedDatabaseConfiguration databaseConfiguration = new DataSourceGeneratedDatabaseConfiguration(dataSources,
                Collections.singletonList(new FixtureRuleConfiguration("rule0")));
        DataSource dataSource = databaseConfiguration.getDataSources().get("dsc");
        assertThat(dataSource, instanceOf(HikariDataSource.class));
        assertThat(((HikariDataSource) dataSource).getUsername(), is(username));
        assertThat(((HikariDataSource) dataSource).getPassword(), is(password));
        assertThat(((HikariDataSource) dataSource).getJdbcUrl(), is(url));
        FixtureRuleConfiguration next =
                (FixtureRuleConfiguration) databaseConfiguration.getRuleConfigurations().iterator().next();
        assertEquals(next.getName(), "rule0");
        DataSourceProperties properties = databaseConfiguration.getDataSourceProperties().get("dsc");
        assertThat(properties.getPoolPropertySynonyms().getStandardPropertyKeys().size(), is(6));
        assertEquals(url, properties.getConnectionPropertySynonyms().getStandardProperties().get("url"));
        assertEquals(username, properties.getConnectionPropertySynonyms().getStandardProperties().get("username"));
        assertEquals(password, properties.getConnectionPropertySynonyms().getStandardProperties().get("password"));
    }

Line commented on: assertEquals(password, properties.getConnectionPropertySynonyms().getStandardProperties().get("password"));

Revised code:
public void assertDataSourceGeneratedDatabaseConfiguration() {
        String url = "jdbc:mysql:
        String username = "root";
        String password = "root";
        ConnectionConfiguration configuration = new ConnectionConfiguration(url, username, password);
        PoolConfiguration poolConfiguration = new PoolConfiguration(2000L, 1000L, 1000L, 6, 2, false, new Properties());
        DataSourceConfiguration dataSourceConfiguration = new DataSourceConfiguration(configuration, poolConfiguration);
        Map<String, DataSourceConfiguration> dataSources = new HashMap<>(1);
        dataSources.put("dsc", dataSourceConfiguration);
        DataSourceGeneratedDatabaseConfiguration databaseConfiguration = new DataSourceGeneratedDatabaseConfiguration(dataSources,
                Collections.singletonList(new FixtureRuleConfiguration("rule0")));
        DataSource dataSource = databaseConfiguration.getDataSources().get("dsc");
        assertThat(dataSource, instanceOf(HikariDataSource.class));
        assertThat(((HikariDataSource) dataSource).getUsername(), is(username));
        assertThat(((HikariDataSource) dataSource).getPassword(), is(password));
        assertThat(((HikariDataSource) dataSource).getJdbcUrl(), is(url));
        FixtureRuleConfiguration next =
                (FixtureRuleConfiguration) databaseConfiguration.getRuleConfigurations().iterator().next();
        assertThat(next.getName(), is("rule0"));
        DataSourceProperties properties = databaseConfiguration.getDataSourceProperties().get("dsc");
        assertThat(properties.getPoolPropertySynonyms().getStandardPropertyKeys().size(), is(6));
        assertThat(properties.getConnectionPropertySynonyms().getStandardProperties().get("url"), is(url));
        assertThat(properties.getConnectionPropertySynonyms().getStandardProperties().get("username"), is(username));
        assertThat(properties.getConnectionPropertySynonyms().getStandardProperties().get("password"), is(password));
    }