org.trustedanalytics.h2oscoringengine.publisher.http.FilesDownloaderTest.java Source code

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Here is the source code for org.trustedanalytics.h2oscoringengine.publisher.http.FilesDownloaderTest.java

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/**
 * Copyright (c) 2015 Intel Corporation
 *
 * 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 org.trustedanalytics.h2oscoringengine.publisher.http;

import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.equalTo;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;

import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;

import org.apache.commons.codec.binary.Base64;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import org.springframework.http.HttpMethod;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.client.HttpClientErrorException;
import org.springframework.web.client.RestTemplate;

public class FilesDownloaderTest {

    private final BasicAuthServerCredentials testCredentials = new BasicAuthServerCredentials("somehost",
            "username", "password");
    private final String testResource = "/skjfks/asf";
    private Path testPath;
    private String testServerResponse = "Some server response";
    private final RestTemplate restTemplateMock = mock(RestTemplate.class);
    private final ResponseEntity<byte[]> responseMock = mock(ResponseEntity.class);

    @Rule
    public final ExpectedException thrown = ExpectedException.none();

    @Before
    public void setUp() throws IOException {
        this.testPath = Files.createTempFile("some", "file");

        when(restTemplateMock.exchange(testCredentials.getHost() + testResource, HttpMethod.GET,
                HttpCommunication.basicAuthRequest(testCredentials.getBasicAuthToken()), byte[].class))
                        .thenReturn(responseMock);
    }

    @Test
    public void download_serverResponse200_resourcesDownloaded() throws Exception {
        // given
        FilesDownloader downloader = new FilesDownloader(testCredentials, restTemplateMock);

        // when
        when(responseMock.getBody()).thenReturn(testServerResponse.getBytes());
        downloader.download(testResource, testPath);

        // then
        verify(restTemplateMock).exchange(testCredentials.getHost() + testResource, HttpMethod.GET,
                HttpCommunication.basicAuthRequest(testCredentials.getBasicAuthToken()), byte[].class);
        assertThat(new String(Files.readAllBytes(testPath)), equalTo(testServerResponse));
    }

    @Test
    public void download_serverResponse401_excpetionWithProperMessageThrown() throws IOException {
        // given
        FilesDownloader downloader = new FilesDownloader(testCredentials, restTemplateMock);
        String expectedExceptionMessage = "Login to " + testCredentials.getHost() + " with credentials "
                + new String(Base64.decodeBase64(testCredentials.getBasicAuthToken().getBytes())) + " failed";

        // when
        when(restTemplateMock.exchange(testCredentials.getHost() + testResource, HttpMethod.GET,
                HttpCommunication.basicAuthRequest(testCredentials.getBasicAuthToken()), byte[].class))
                        .thenThrow(new HttpClientErrorException(HttpStatus.UNAUTHORIZED));

        // then
        thrown.expect(IOException.class);
        thrown.expectMessage(expectedExceptionMessage);
        downloader.download(testResource, testPath);
    }

    @Test
    public void download_serverResponse404_excpetionWithProperMessageThrown() throws IOException {
        // given
        FilesDownloader downloader = new FilesDownloader(testCredentials, restTemplateMock);
        String expectedExceptionMessage = "Resource not found.";

        // when
        when(restTemplateMock.exchange(testCredentials.getHost() + testResource, HttpMethod.GET,
                HttpCommunication.basicAuthRequest(testCredentials.getBasicAuthToken()), byte[].class))
                        .thenThrow(new HttpClientErrorException(HttpStatus.NOT_FOUND));

        // then
        thrown.expect(IOException.class);
        thrown.expectMessage(expectedExceptionMessage);
        downloader.download(testResource, testPath);
    }

    @Test
    public void download_serverResponseErrorOtherThan401And404_excpetionWithProperMessageThrown()
            throws IOException {
        // given
        FilesDownloader downloader = new FilesDownloader(testCredentials, restTemplateMock);
        HttpStatus expectedErrorStatus = HttpStatus.BAD_GATEWAY;
        String expectedExceptionMessage = "Server response status: " + expectedErrorStatus;

        // when
        when(restTemplateMock.exchange(testCredentials.getHost() + testResource, HttpMethod.GET,
                HttpCommunication.basicAuthRequest(testCredentials.getBasicAuthToken()), byte[].class))
                        .thenThrow(new HttpClientErrorException(expectedErrorStatus));

        // then
        thrown.expect(IOException.class);
        thrown.expectMessage(expectedExceptionMessage);
        downloader.download(testResource, testPath);
    }

}