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Integration test module for ${project.groupId}:${project.artifactId}.
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/*
 * Copyright (c) 2018, salesforce.com, inc.
 * All rights reserved.
 * Licensed under the BSD 3-Clause license.
 * For full license text, see LICENSE.txt file in the repo root or
 * https://opensource.org/licenses/BSD-3-Clause
 */

package com.salesforce.dockerfileimageupdate.itest.tests;

import com.google.gson.JsonElement;
import com.google.gson.JsonParser;
import com.salesforce.dockerfileimageupdate.itest.MainJarFinder;
import com.salesforce.dockerfileimageupdate.utils.GitHubUtil;
import org.kohsuke.github.*;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.testng.annotations.AfterClass;
import org.testng.annotations.BeforeClass;
import org.testng.annotations.Test;

import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.UUID;

import static com.salesforce.dockerfileimageupdate.itest.tests.TestCommon.ORGS;
import static com.salesforce.dockerfileimageupdate.itest.tests.TestCommon.addVersionStoreRepo;
import static com.salesforce.dockerfileimageupdate.itest.tests.TestValidationCommon.checkIfSearchUpToDate;
import static org.testng.Assert.assertEquals;
import static org.testng.Assert.assertNotNull;

/**
 * Created by minho.park on 7/19/16.
 */
public class ParentCommandTest {
    private static final Logger log = LoggerFactory.getLogger(ParentCommandTest.class);

    private static final List REPOS = Arrays.asList(
            "dockerfileImageUpdateParentITest1", "dockerfileImageUpdateParentITest2",
            "dockerfileImageUpdateParentITest3", "dockerfileImageUpdateParentITest4");

    private static final List DUPLICATES = Arrays.asList(
            "dockerfileImageUpdateParentITest-Across1", "dockerfileImageUpdateParentITest-Across2");

    private static final List DUPLICATES_CREATED_BY_GIT_HUB = Arrays.asList(
            DUPLICATES.get(0), DUPLICATES.get(0)+"-1", DUPLICATES.get(0)+"-2",
            DUPLICATES.get(1), DUPLICATES.get(1)+"-1", DUPLICATES.get(1)+"-2");

    private static final String IMAGE_1 = UUID.randomUUID().toString();
    private static final String IMAGE_2 = UUID.randomUUID().toString();
    private static final String TAG = UUID.randomUUID().toString();
    private static final String STORE_NAME = REPOS.get(0) + "-Store";


    private List createdRepos = new ArrayList<>();
    private GitHubUtil gitHubUtil; //initialized in setUp
    private GitHub github = null; //initialized in setUp

    @BeforeClass
    public void setUp() throws Exception {
        String gitApiUrl = System.getenv("git_api_url");
        String token = System.getenv("git_api_token");
        github = new GitHubBuilder().withEndpoint(gitApiUrl)
                .withOAuthToken(token)
                .build();
        github.checkApiUrlValidity();
        gitHubUtil = new GitHubUtil(github);

        TestCommon.cleanBefore(REPOS, DUPLICATES_CREATED_BY_GIT_HUB, STORE_NAME, github);

        GHOrganization org = github.getOrganization(ORGS.get(0));
        TestCommon.initializeRepos(org, REPOS, IMAGE_1, createdRepos, gitHubUtil);

        for (String s: ORGS) {
            org = github.getOrganization(s);
            TestCommon.initializeRepos(org, DUPLICATES, IMAGE_2, createdRepos, gitHubUtil);
        }
        /* We need to wait because there is a delay on the search API used in the parent command; it takes time
         * for the search API to pick up recently created repositories.
         */
        checkIfSearchUpToDate("image1", IMAGE_1, REPOS.size(), github);
        checkIfSearchUpToDate("image2", IMAGE_2, DUPLICATES.size() * ORGS.size(), github);
    }

    @Test
    public void testParent() throws Exception {
        int exitcode = spawnParentProcess(IMAGE_1);
        assertEquals(exitcode, 0, "Parent command for testParent failed.");

        for (String repoName : REPOS) {
            TestValidationCommon.validateRepo(repoName, IMAGE_1, TAG, github, gitHubUtil);
        }
    }

    /**
     * This method spawns a dockerfile-image-update process with the parent command.
     *
     * @param imageName name of the image to update
     * @return exit code of parent process
     */
    private int spawnParentProcess(String imageName) throws IOException, InterruptedException {
        ProcessBuilder builder = new ProcessBuilder("java", "-jar", MainJarFinder.getName(), "parent",
                imageName, TAG, STORE_NAME);
        builder.redirectOutput(ProcessBuilder.Redirect.INHERIT);
        builder.redirectError(ProcessBuilder.Redirect.INHERIT);
        Process pc = builder.start(); // may throw IOException

        return pc.waitFor();
    }

    @Test(dependsOnMethods = "testParent")
    public void testIdempotency() throws Exception {
        testParent();
    }

    @Test
    public void testSameNameAcrossDifferentOrgs() throws Exception {
        int exitcode = spawnParentProcess(IMAGE_2);
        assertEquals(exitcode, 0, "Parent command for testSameNameAcrossDifferentOrgs failed.");

        for (String repoName : DUPLICATES_CREATED_BY_GIT_HUB) {
            TestValidationCommon.validateRepo(repoName, IMAGE_2, TAG, github, gitHubUtil);
        }
    }

    @Test(dependsOnMethods = {"testIdempotency", "testSameNameAcrossDifferentOrgs"})
    public void testStoreUpdate() throws Exception {
        String user = github.getMyself().getLogin();
        GHRepository storeRepo = github.getRepository(Paths.get(user, STORE_NAME).toString());
        String latestCommit = storeRepo.getBranches().get(storeRepo.getDefaultBranch()).getSHA1();
        GHContent store = storeRepo.getFileContent("store.json", latestCommit);
        try (InputStream stream = store.read(); InputStreamReader streamR = new InputStreamReader(stream)) {
            JsonElement json = JsonParser.parseReader(streamR);
            assertNotNull(json);
            JsonElement images = json.getAsJsonObject().get("images");
            assertNotNull(images);
            Object image1 = images.getAsJsonObject().get(IMAGE_1);
            assertNotNull(image1);
            Object image2 = images.getAsJsonObject().get(IMAGE_2);
            assertNotNull(image2);
            assertEquals(images.getAsJsonObject().get(IMAGE_1).getAsString(), TAG);
            assertEquals(images.getAsJsonObject().get(IMAGE_2).getAsString(), TAG);
        }
    }

    @AfterClass
    public void cleanUp() throws Exception {
        addVersionStoreRepo(github, createdRepos, STORE_NAME);
        TestCommon.cleanAllRepos(createdRepos, false);
    }
}