Programatically test the naming convention of OpenAPI in spring boot

OpenApiNamingConventionTest.class

import java.util.regex.Pattern;

import static org.assertj.core.api.Assertions.assertThat;
import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
import com.fasterxml.jackson.databind.ObjectMapper;
import io.swagger.v3.oas.models.OpenAPI;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.web.servlet.MockMvc;
import org.springframework.test.web.servlet.MvcResult;

@SpringBootTest
@AutoConfigureMockMvc
class OpenApiNamingConventionTest {

    @Autowired
    private MockMvc mockMvc;

    private static final Pattern ALLOWED_PATH_CHARS = Pattern.compile("[a-z/{}-]+");

    @Test
    public void thatOpenApiNamingConventionsAreCorrect() throws Exception {
        // given
        OpenAPI openAPI = loadOpenApi();

        openAPI.getPaths().forEach((pathKey, pathItem) -> {
            assertThat(pathKey).matches(ALLOWED_PATH_CHARS);           
        });
    }

    private OpenAPI loadOpenApi() throws Exception {
        MvcResult result = mockMvc.perform(get("/v3/api-docs")) // Access the OpenAPI definition
            .andExpect(status().isOk())
            .andReturn();
        String content = result.getResponse().getContentAsString();
        ObjectMapper objectMapper = new ObjectMapper();
        return objectMapper.readValue(content, OpenAPI.class);
    }
}