在模块的 androidTest 中运行仪器测试

Question

是否可以在没有活动但使用 AppCompat 依赖项的 Android 模块中运行仪器测试？我正在尝试运行一个简单的测试，但只有在移动到应用程序模块时才有效。

使用类进行测试

/**
 * Typical email validation
 * */
fun validateEmail(email: String?): ValidationResult {
    val emailInput: String? = email?.trim()
    return when {
        (emailInput.isNullOrBlank()) -> {
            ValidationResult(
                isSuccessful = false,
                errorMessageResource = R.string.field_required
            )
        }
        (Patterns.EMAIL_ADDRESS.matcher(emailInput).matches().not()) -> {
            ValidationResult(
                isSuccessful = false,
                errorMessageResource = R.string.invalid_email
            )
        }
        else -> {
            ValidationResult(
                isSuccessful = true
            )
        }
    }
}

测试脚本

@RunWith(AndroidJUnit4::class)
class ValidationUtilsTest {

   @Test
   fun invalidEmails_returnsFalse() {

     val invalidEmailList = listOf(
        "plainaddress",
        "#@%^%#$@#$@#.com",
        "@example.com",
        "Joe Smith <[email protected]>",
        "email.example.com",
        "email@[email protected]",
        "[email protected]",
        "[email protected]",
        "[email protected]",
        "あいうえお@example.com",
        "[email protected] (Joe Smith)",
        "email@example",
        "[email protected]",
        "[email protected]",
        "[email protected]",
        "[email protected]",
        "[email protected]"
    )

    val listResult = mutableListOf<Boolean>()

    for (invalidEmail in invalidEmailList) {
        val result = ValidationUtils.validateEmail(invalidEmail)
        listResult.add(result.isSuccessful)
    }

    assertThat(listResult.any { true }).isFalse()

  }

}

出现这些错误：

java.lang.RuntimeException: Unable to instantiate instrumentation ComponentInfo

Caused by: java.lang.ClassNotFoundException: Didn't find class "androidx.test.runner.AndroidJUnitRunner" on path: DexPathList

结构

 - app
   - libs
     - androidTest
     - test

Answer 1

终于找到问题了，需要添加runner依赖

androidx.test:runner

。