/*
 * Copyright 2002-2020 the original author or authors.
 *
 * 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
 *
 *      https://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 org.springframework.web.reactive.function.client

import io.mockk.every
import io.mockk.mockk
import io.mockk.verify
import kotlinx.coroutines.runBlocking
import org.assertj.core.api.Assertions.assertThat
import org.junit.jupiter.api.Test
import org.springframework.core.ParameterizedTypeReference
import org.springframework.http.HttpStatus
import org.springframework.http.ResponseEntity
import reactor.core.publisher.Mono

/**
 * Mock object based tests for [ClientResponse] Kotlin extensions.
 *
 * @author Sebastien Deleuze
 * @author Igor Manushin
 */
class ClientResponseExtensionsTests {

	private val response = mockk<ClientResponse>(relaxed = true)

	@Test
	fun `bodyToMono with reified type parameters`() {
		response.bodyToMono<List<Foo>>()
		verify { response.bodyToMono(object : ParameterizedTypeReference<List<Foo>>() {}) }
	}

	@Test
	fun `bodyToFlux with reified type parameters`() {
		response.bodyToFlux<List<Foo>>()
		verify { response.bodyToFlux(object : ParameterizedTypeReference<List<Foo>>() {}) }
	}

	@Test
	fun `bodyToFlow with reified type parameters`() {
		response.bodyToFlow<List<Foo>>()
		verify { response.bodyToFlux(object : ParameterizedTypeReference<List<Foo>>() {}) }
	}

	@Test
	fun `bodyToFlow with KClass parameter`() {
		response.bodyToFlow(Foo::class)
		verify { response.bodyToFlux(Foo::class.java) }
	}

	@Test
	fun `toEntity with reified type parameters`() {
		response.toEntity<List<Foo>>()
		verify { response.toEntity(object : ParameterizedTypeReference<List<Foo>>() {}) }
	}

	@Test
	fun `ResponseSpec#toEntityList with reified type parameters`() {
		response.toEntityList<List<Foo>>()
		verify { response.toEntityList(object : ParameterizedTypeReference<List<Foo>>() {}) }
	}

	@Test
	fun awaitBody() {
		val response = mockk<ClientResponse>()
		every { response.bodyToMono<String>() } returns Mono.just("foo")
		runBlocking {
			assertThat(response.awaitBody<String>()).isEqualTo("foo")
		}
	}

	@Test
	fun `awaitBody with KClass parameter`() {
		val response = mockk<ClientResponse>()
		every { response.bodyToMono(String::class.java) } returns Mono.just("foo")
		runBlocking {
			assertThat(response.awaitBody(String::class)).isEqualTo("foo")
		}
	}

	@Test
	fun awaitBodyOrNull() {
		val response = mockk<ClientResponse>()
		every { response.bodyToMono<String>() } returns Mono.empty()
		runBlocking {
			assertThat(response.awaitBodyOrNull<String>()).isNull()
		}
	}

	@Test
	fun `awaitBodyOrNullGeneric with KClass parameter`() {
		val response = mockk<ClientResponse>()
		every { response.bodyToMono(String::class.java) } returns Mono.empty()
		runBlocking {
			assertThat(response.awaitBodyOrNull(String::class)).isNull()
		}
	}

	@Test
	fun awaitEntity() {
		val response = mockk<ClientResponse>()
		val entity = ResponseEntity("foo", HttpStatus.OK)
		every { response.toEntity<String>() } returns Mono.just(entity)
		runBlocking {
			assertThat(response.awaitEntity<String>()).isEqualTo(entity)
		}
	}

	@Test
	fun `awaitEntity with KClass parameter`() {
		val response = mockk<ClientResponse>()
		val entity = ResponseEntity("foo", HttpStatus.OK)
		every { response.toEntity(String::class.java) } returns Mono.just(entity)
		runBlocking {
			assertThat(response.awaitEntity(String::class)).isEqualTo(entity)
		}
	}

	@Test
	fun awaitEntityList() {
		val response = mockk<ClientResponse>()
		val entity = ResponseEntity(listOf("foo"), HttpStatus.OK)
		every { response.toEntityList<String>() } returns Mono.just(entity)
		runBlocking {
			assertThat(response.awaitEntityList<String>()).isEqualTo(entity)
		}
	}

	@Test
	fun `awaitEntityList with KClass parameter`() {
		val response = mockk<ClientResponse>()
		val entity = ResponseEntity(listOf("foo"), HttpStatus.OK)
		every { response.toEntityList(String::class.java) } returns Mono.just(entity)
		runBlocking {
			assertThat(response.awaitEntityList(String::class)).isEqualTo(entity)
		}
	}

	@Test
	fun awaitBodilessEntity() {
		val response = mockk<ClientResponse>()
		val entity = mockk<ResponseEntity<Void>>()
		every { response.toBodilessEntity() } returns Mono.just(entity)
		runBlocking {
			assertThat(response.awaitBodilessEntity()).isEqualTo(entity)
		}
	}

	@Test
	fun createExceptionAndAwait() {
		val response = mockk<ClientResponse>()
		val exception = mockk<WebClientResponseException>()
		every { response.createException() } returns Mono.just(exception)
		runBlocking {
			assertThat(response.createExceptionAndAwait()).isEqualTo(exception)
		}
	}

	class Foo
}
