Azure运行Android测试遇类型不匹配错误，指向HttpLoggingInterceptor

问题现象 #

在Azure流水线执行Android项目test步骤时，compileDebugKotlin和compileReleaseKotlin两个Gradle任务失败，错误信息：

Type mismatch: inferred type is () -> String? but String? was expected

问题指向HttpLoggingInterceptor相关代码，但本地执行相同Gradle任务无异常。已更新Interceptor依赖，本地与Azure均使用Gradle Wrapper 8.0。

相关代码 #

OkHttpClient构建代码 #

private fun getHttpClient(
    ): OkHttpClient {

        val logger = HttpLoggingInterceptor()
        logger.level = HttpLoggingInterceptor.Level.BODY

        val customLoggingInterceptor = CustomLoggingInterceptor(logger)

        return OkHttpClient.Builder()
            .addInterceptor(
                BearerInterceptor { token }
            )
            .addInterceptor(
                customLoggingInterceptor
            )
            .addInterceptor(
                logger
            )
            .connectTimeout(
                CONNECTION_TIMEOUT_IN_SECONDS,
                TimeUnit.SECONDS
            )
            .readTimeout(
                CONNECTION_TIMEOUT_IN_SECONDS,
                TimeUnit.SECONDS
            )
            .build()
    }

Azure流水线YAML配置 #

# Android
# Build your Android project with Gradle.
# Add steps that test, sign, and distribute the APK, save build artifacts, and more:
# https://docs.microsoft.com/azure/devops/pipelines/languages/android

# Pipeline to run the tests as a precondition to every direct commit / Pull Request to develop/main branches
trigger:
  branches:
    include:
      - develop
      - main

pr:
  branches:
    include:
      - develop
      - main

pool:
  vmImage: 'ubuntu-latest'

resources:
  repositories:
    - repository: my_subrepository
      type: git
      name: TheAzureProject/TheMainRepository

steps:
- checkout: self
- checkout: my_subrepository
  path: s/TheMainRepository/my_subrepository

- task: JavaToolInstaller@0
  displayName: Setup Java 17
  inputs:
    versionSpec: '17'
    jdkArchitectureOption: 'x64'
    jdkSourceOption: 'PreInstalled'

- task: Gradle@3
  displayName: Run Tests
  inputs:
    workingDirectory: 'TheMainRepository'
    gradleWrapperFile: 'TheMainRepository/gradlew'
    gradleOptions: '-Xmx3072m'
    javaHomeOption: 'JDKVersion'
    publishJUnitResults: true
    testResultsFiles: '**/TEST-*.xml'
    tasks: 'test'

解决方案 #

核心代码修正 #

错误的直接原因是BearerInterceptor的参数传递错误：当前代码BearerInterceptor { token }传递的是一个lambda表达式（类型为() -> String?），但BearerInterceptor的构造函数期望接收String?类型的参数。只需去掉lambda的大括号，直接传入token变量即可：

.addInterceptor(
    BearerInterceptor(token)
)

额外排查方向（若上述修正无效） #

如果BearerInterceptor设计上确实需要接收一个提供token的函数（参数类型为() -> String?），需检查：

• 流水线中拉取的子仓库my_subrepository里，BearerInterceptor的实现是否与本地一致，避免因代码同步不及时导致的定义差异。
• 确认依赖更新是否在流水线中生效，可在流水线中添加./gradlew dependencies任务查看依赖版本。

内容的提问来源于stack exchange，提问作者Pedro Gonzalez