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DefaultDataFetcherExceptionHandlerTest.kt
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DefaultDataFetcherExceptionHandlerTest.kt
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/*
* Copyright 2021 Netflix, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.netflix.graphql.dgs.exceptions
import com.netflix.graphql.types.errors.ErrorType
import graphql.execution.DataFetcherExceptionHandlerParameters
import graphql.execution.ResultPath
import io.mockk.MockKAnnotations
import io.mockk.every
import io.mockk.impl.annotations.MockK
import org.assertj.core.api.Assertions.assertThat
import org.junit.jupiter.api.BeforeEach
import org.junit.jupiter.api.Test
import org.springframework.security.access.AccessDeniedException
import java.util.concurrent.CompletionException
internal class DefaultDataFetcherExceptionHandlerTest {
@MockK
lateinit var dataFetcherExceptionHandlerParameters: DataFetcherExceptionHandlerParameters
@BeforeEach
fun setup() {
MockKAnnotations.init(this)
every { dataFetcherExceptionHandlerParameters.path }.returns(ResultPath.parse("/Query/test"))
}
@Test
fun securityError() {
every { dataFetcherExceptionHandlerParameters.exception }.returns(AccessDeniedException("Denied"))
val result = DefaultDataFetcherExceptionHandler().handleException(dataFetcherExceptionHandlerParameters).get()
assertThat(result.errors.size).isEqualTo(1)
val extensions = result.errors[0].extensions
assertThat(extensions["errorType"]).isEqualTo("PERMISSION_DENIED")
// We return null here because we don't want graphql-java to write classification field
assertThat(result.errors[0].errorType).isNull()
}
@Test
fun normalError() {
every { dataFetcherExceptionHandlerParameters.exception }.returns(RuntimeException("Something broke"))
val result = DefaultDataFetcherExceptionHandler().handleException(dataFetcherExceptionHandlerParameters).get()
assertThat(result.errors.size).isEqualTo(1)
val extensions = result.errors[0].extensions
assertThat(extensions["errorType"]).isEqualTo("INTERNAL")
// We return null here because we don't want graphql-java to write classification field
assertThat(result.errors[0].errorType).isNull()
}
@Test
fun normalErrorWithSpecialCharacterString() {
every { dataFetcherExceptionHandlerParameters.exception }.returns(RuntimeException("/bgt_budgetingProject/specificPass: not a PassId: bdgt%3Apass%2F3"))
val result = DefaultDataFetcherExceptionHandler().handleException(dataFetcherExceptionHandlerParameters).get()
assertThat(result.errors.size).isEqualTo(1)
val extensions = result.errors[0].extensions
assertThat(extensions["errorType"]).isEqualTo("INTERNAL")
// We return null here because we don't want graphql-java to write classification field
assertThat(result.errors[0].errorType).isNull()
}
@Test
fun entityNotFoundException() {
every { dataFetcherExceptionHandlerParameters.exception }.returns(DgsEntityNotFoundException("Movie with movieId '1' was not found"))
val result = DefaultDataFetcherExceptionHandler().handleException(dataFetcherExceptionHandlerParameters).get()
assertThat(result.errors.size).isEqualTo(1)
val extensions = result.errors[0].extensions
assertThat(extensions["errorType"]).isEqualTo("NOT_FOUND")
// We return null here because we don't want graphql-java to write classification field
assertThat(result.errors[0].errorType).isNull()
}
@Test
fun badRequestException() {
every { dataFetcherExceptionHandlerParameters.exception }.returns(DgsBadRequestException("Malformed movie request"))
val result = DefaultDataFetcherExceptionHandler().handleException(dataFetcherExceptionHandlerParameters).get()
assertThat(result.errors.size).isEqualTo(1)
val extensions = result.errors[0].extensions
assertThat(extensions["errorType"]).isEqualTo("BAD_REQUEST")
// We return null here because we don't want graphql-java to write classification field
assertThat(result.errors[0].errorType).isNull()
}
@Test
fun `custom DGS exception should return custom error`() {
val customDgsExceptionMessage = "Studio Search Who"
val customDgsExceptionType = ErrorType.FAILED_PRECONDITION
class CustomDgsException() :
DgsException(message = customDgsExceptionMessage, errorType = customDgsExceptionType)
every { dataFetcherExceptionHandlerParameters.exception }.returns(CustomDgsException())
val result = DefaultDataFetcherExceptionHandler().handleException(dataFetcherExceptionHandlerParameters).get()
assertThat(result.errors.size).isEqualTo(1)
val extensions = result.errors[0].extensions
assertThat(extensions["errorType"]).isEqualTo(customDgsExceptionType.name)
// We return null here because we don't want graphql-java to write classification field
assertThat(result.errors[0].errorType).isNull()
}
@Test
fun `CompletionException returns wrapped error code`() {
val completionException = CompletionException("com.netflix.graphql.dgs.exceptions.DgsEntityNotFoundException: Requested entity not found",
DgsEntityNotFoundException())
every { dataFetcherExceptionHandlerParameters.exception }.returns(completionException)
val result = DefaultDataFetcherExceptionHandler().handleException(dataFetcherExceptionHandlerParameters).get()
assertThat(result.errors.size).isEqualTo(1)
val extensions = result.errors[0].extensions
assertThat(extensions["errorType"]).isEqualTo("NOT_FOUND")
// We return null here because we don't want graphql-java to write classification field
assertThat(result.errors[0].errorType).isNull()
}
}