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var assert = require("assert");
var path = require("path");
var fse = require("fs-extra");

var garbageCollect = require("../utils/garbage_collect.js");
var leakTest = require("../utils/leak_test");

var local = path.join.bind(path, __dirname);

var exec = require("../../utils/execPromise");

describe("Commit", function() {
  var NodeGit = require("../../");
  var Repository = NodeGit.Repository;
  var Commit = NodeGit.Commit;
  var Diff = NodeGit.Diff;
  var Oid = NodeGit.Oid;

  var reposPath = local("../repos/workdir");
  var newRepoPath = local("../repos/new");
  var oid = "fce88902e66c72b5b93e75bdb5ae717038b221f6";

  function reinitialize(test) {
    return Repository.open(reposPath)
      .then(function(repository) {
        test.repository = repository;

        return repository.getCommit(oid);
      })
      .then(function(commit) {
        test.commit = commit;
      });
  }

  function commitFile(repo, fileName, fileContent, commitMessage) {
    var index;
    var treeOid;
    var parent;

    return fse.writeFile(path.join(repo.workdir(), fileName), fileContent)
    .then(function() {
      return repo.refreshIndex();
    })
    .then(function(indexResult) {
      index = indexResult;
    })
    .then(function() {
      return index.addByPath(fileName);
    })
    .then(function() {
      return index.write();
    })
    .then(function() {
      return index.writeTree();
    })
    .then(function(oidResult) {
      treeOid = oidResult;
      return NodeGit.Reference.nameToId(repo, "HEAD");
    })
    .then(function(head) {
      return repo.getCommit(head);
    })
    .then(function(parentResult) {
      parent = parentResult;
      return Promise.all([
        NodeGit.Signature.create("Foo Bar", "foo@bar.com", 123456789, 60),
        NodeGit.Signature.create("Foo A Bar", "foo@bar.com", 987654321, 90)
      ]);
    })
    .then(function(signatures) {
      var author = signatures[0];
      var committer = signatures[1];

      return repo.createCommit(
        "HEAD",
        author,
        committer,
        "message",
        treeOid,
        [parent]);
    });
  }

  function undoCommit() {
    return exec("git reset --hard HEAD~1", {cwd: reposPath});
  }

  beforeEach(function() {
    return reinitialize(this);
  });

  it("will fail with an invalid sha", function() {
    return this.repository.getCommit("invalid").then(null, function(err) {
      assert.ok(err instanceof Error);
    });
  });

  it("has a message", function() {
    assert.equal(this.commit.message(), "Update README.md");
  });

  it("has a raw message", function() {
    assert.equal(this.commit.messageRaw(), "Update README.md");
  });

  it("has a message encoding", function() {
    var encoding = this.commit.messageEncoding();
    assert.ok(encoding === "UTF-8" || encoding === undefined);
  });

  it("has a summary", function() {
    assert.equal(this.commit.summary(), "Update README.md");
  });

  it("has a sha", function() {
    assert.equal(this.commit.sha(), oid);
  });

  it("has a time", function() {
    assert.equal(this.commit.timeMs(), 1362012884000);
  });

  it("has a date", function() {
    assert.equal(this.commit.date().getTime(), 1362012884000);
  });

  it("has a time offset", function() {
    assert.equal(this.commit.timeOffset(), 780);
  });

  it("can call getTree on a parent commit", function() {
    return this.commit.parent(0)
    .then(function(parent) {
      return parent.getTree();
    })
    .then(function(tree) {
      assert.equal(
        tree.id().toString(), "327ff68e59f94f0c25d2c62fb0938efa01e8a107"
      );
    });
  });

  it("can create a commit", function() {
    var test = this;
    var expectedCommitId = "315e77328ef596f3bc065d8ac6dd2c72c09de8a5";
    var fileName = "newfile.txt";
    var fileContent = "hello world";

    var repo;
    var index;
    var treeOid;
    var parent;

    return NodeGit.Repository.open(reposPath)
    .then(function(repoResult) {
      repo = repoResult;
      return fse.writeFile(path.join(repo.workdir(), fileName), fileContent);
    })
    .then(function() {
      return repo.refreshIndex();
    })
    .then(function(indexResult) {
      index = indexResult;
    })
    .then(function() {
      return index.addByPath(fileName);
    })
    .then(function() {
      return index.write();
    })
    .then(function() {
      return index.writeTree();
    })
    .then(function(oidResult) {
      treeOid = oidResult;
      return NodeGit.Reference.nameToId(repo, "HEAD");
    })
    .then(function(head) {
      return repo.getCommit(head);
    })
    .then(function(parentResult) {
      parent = parentResult;
      return Promise.all([
        NodeGit.Signature.create("Foo Bar", "foo@bar.com", 123456789, 60),
        NodeGit.Signature.create("Foo A Bar", "foo@bar.com", 987654321, 90)
      ]);
    })
    .then(function(signatures) {
      var author = signatures[0];
      var committer = signatures[1];

      return repo.createCommit(
        "HEAD",
        author,
        committer,
        "message",
        treeOid,
        [parent]);
    })
    .then(function(commitId) {
      assert.equal(expectedCommitId, commitId);
      return undoCommit()
      .then(function(){
        return reinitialize(test);
      });
    }, function(reason) {
      return reinitialize(test)
        .then(function() {
          return Promise.reject(reason);
        });
    });
  });

  it("can create a commit as a buffer", function() {
    var test = this;
    var fileName = "newfile.txt";
    var fileContent = "hello world";

    const expectedCommitContent =
      "tree 11c8685af551550e73e5ab89fa554576bd92ef3f\n" +
      "parent 32789a79e71fbc9e04d3eff7425e1771eb595150\n" +
      "author Foo Bar  123456789 +0100\n" +
      "committer Foo A Bar  987654321 +0130\n\n" +
      "message";

    var repo;
    var index;
    var treeOid;
    var parent;

    return NodeGit.Repository.open(reposPath)
    .then(function(repoResult) {
      repo = repoResult;
      return fse.writeFile(path.join(repo.workdir(), fileName), fileContent);
    })
    .then(function() {
      return repo.refreshIndex();
    })
    .then(function(indexResult) {
      index = indexResult;
    })
    .then(function() {
      return index.addByPath(fileName);
    })
    .then(function() {
      return index.write();
    })
    .then(function() {
      return index.writeTree();
    })
    .then(function(oidResult) {
      treeOid = oidResult;
      return NodeGit.Reference.nameToId(repo, "HEAD");
    })
    .then(function(head) {
      return repo.getCommit(head);
    })
    .then(function(parentResult) {
      parent = parentResult;
      return Promise.all([
        NodeGit.Signature.create("Foo Bar", "foo@bar.com", 123456789, 60),
        NodeGit.Signature.create("Foo A Bar", "foo@bar.com", 987654321, 90)
      ]);
    })
    .then(function(signatures) {
      var author = signatures[0];
      var committer = signatures[1];

      return repo.createCommitBuffer(
        author,
        committer,
        "message",
        treeOid,
        [parent]);
    })
    .then(function(commitContent) {
      assert.equal(expectedCommitContent, commitContent);
      return reinitialize(test);
    }, function(reason) {
      return reinitialize(test)
        .then(function() {
          return Promise.reject(reason);
        });
    });
  });

  it("can amend commit", function(){
    var commitToAmendId = "315e77328ef596f3bc065d8ac6dd2c72c09de8a5";
    var expectedAmendedCommitId = "a41de0d1c3dc169c873dd03bd9240d9f88e60ffc";
    var fileName = "newfile.txt";
    var fileContent = "hello world";
    var newFileName = "newerfile.txt";
    var newFileContent = "goodbye world";
    var messageEncoding = "US-ASCII";
    var message = "First commit";

    var repo;
    var index;
    var treeOid;
    var parent;
    var author;
    var committer;
    var amendedCommitId;

    return NodeGit.Repository.open(reposPath)
    .then(function(repoResult) {
      repo = repoResult;
      return fse.writeFile(path.join(repo.workdir(), fileName), fileContent);
    })
    .then(function() {
      return repo.refreshIndex();
    })
    .then(function(indexResult) {
      index = indexResult;
    })
    .then(function() {
      return index.addByPath(fileName);
    })
    .then(function() {
      return index.write();
    })
    .then(function() {
      return index.writeTree();
    })
    .then(function(oidResult) {
      treeOid = oidResult;
      return NodeGit.Reference.nameToId(repo, "HEAD");
    })
    .then(function(head) {
      return repo.getCommit(head);
    })
    .then(function(parentResult) {
      parent = parentResult;
      return Promise.all([
        NodeGit.Signature.create("Foo Bar", "foo@bar.com", 123456789, 60),
        NodeGit.Signature.create("Foo A Bar", "foo@bar.com", 987654321, 90)
      ]);
    })
    .then(function(signatures) {
      var author = signatures[0];
      var committer = signatures[1];

      return repo.createCommit(
        "HEAD",
        author,
        committer,
        "message",
        treeOid,
        [parent]);
    })
    .then(function() {
      return fse.writeFile(
        path.join(repo.workdir(), newFileName),
        newFileContent
      );
    })
    .then(function() {
      return repo.refreshIndex();
    })
    .then(function(indexResult) {
      index = indexResult;
    })
    .then(function() {
      return index.addByPath(newFileName);
    })
    .then(function() {
      return index.write();
    })
    .then(function() {
      return index.writeTree();
    })
    .then(function(resultOid){
      treeOid = resultOid;
       return Promise.all([
         repo.getCommit(commitToAmendId),
         NodeGit.Signature.create(
           "New Foo Bar",
           "newfoo@bar.com",
           246802468,
           12
         ),
         NodeGit.Signature.create(
           "New Foo A Bar",
           "newfoo@bar.com",
           4807891730,
           32
         )
       ]);

    })
    .then(function(amendInfo){
      var commit = amendInfo[0];
      author = amendInfo[1];
      committer = amendInfo[2];
      return commit.amend(
        "HEAD",
        author,
        committer,
        messageEncoding,
        message,
        treeOid
      );
    })
    .then(function(commitId){
      amendedCommitId = commitId;
      return undoCommit();
    })
    .then(function(){
      assert.equal(amendedCommitId, expectedAmendedCommitId);
    });
  });

  it("can amend commit and update reference separately", function() {
    var customReflogMessage = "updating reference manually";

    var head, repo, oid, originalReflogCount;

    return NodeGit.Repository.open(reposPath)
    .then(function(repoResult) {
      repo = repoResult;
      // grab the original reflog entry count (to make sure .amend
      // doesn't add a reflog entry when not given a reference)
      return NodeGit.Reflog.read(repo, "HEAD");
    })
    .then(function(reflog) {
      originalReflogCount = reflog.entrycount();
      // get the head reference and commit
      return repo.head();
    })
    .then(function(headResult) {
      head = headResult;
      return repo.getHeadCommit();
    })
    .then(function(headCommit) {
      // amend the commit but don't update any reference
      // (passing null as update_ref)
      return headCommit.amend(
        null,
        null,
        null,
        "message",
        null,
        null);
    }).then(function(oidResult) {
      oid = oidResult;
      // update the reference manually
      return head.setTarget(oid, customReflogMessage);
    }).then(function() {
      // load reflog and make sure the last message is what we expected
      return NodeGit.Reflog.read(repo, "HEAD");
    }).then(function(reflog) {
      var reflogEntry = reflog.entryByIndex(0);
      assert.equal(
        reflogEntry.message(),
        customReflogMessage
      );
      assert.equal(
        reflogEntry.idNew().toString(),
        oid
      );
      // only setTarget should have added to the entrycount
      assert.equal(reflog.entrycount(), originalReflogCount + 1);
    });
  });

  describe("amendWithSignature", function() {
    it("can amend with signature", function() {
      const signedData = "-----BEGIN PGP SIGNATURE-----\n" +
      "\n" +
      "iQJHBAEBCAAxFiEEKdxGpJ93wnkLaBKfURjJKedOfEMFAlxPKUYTHHN0ZXZla0Bh\n" +
      "eG9zb2Z0LmNvbQAKCRBRGMkp5058Q3vcD/0Uf6P68g98Kbvsgjg/aidM1ujruXaw\n" +
      "X5WSsCAw+wWGICOj0n+KBnmQruI4HSFz3zykEshuOpcBv1X/+huwDeB/hBqonCU8\n" +
      "QdexCdWR70YbT1bufesUwV9v1qwE4WOmFxWXgwh55K0wDRkc0u2aLcwrJkIEEVfs\n" +
      "HqZyFzU4kwbGekY/m7d1DsBhWyKEGW9/25WMYmjWOWOiaFjeBaHLlxiEM8KGnMLH\n" +
      "wx37NuFuaABgi23AAcBGdeWy04TEuU4S51+bHM3RotrZ2cryW2lEbkkXodhIJcq0\n" +
      "RgrStCbvR0ehnOPdYSiRbxK8JNLZuNjHlK2g7wVi+C83vwMQuhU4H6OlYHGVr664\n" +
      "4YzL83FdIo7wiMOFd2OOMLlCfHgTun60FvjCs4WHjrwH1fQl287FRPLa/4olBSQP\n" +
      "yUXJaZdxm4cB4L/1pmbb/J/XUiOio3MpaN3GFm2hZloUlag1uPDBtCxTl5odvj4a\n" +
      "GOmTBWznXxF/zrKnQVSvv+EccNxYFc0VVjAxGgNqPzIxDAKtw1lE5pbBkFpFpNHz\n" +
      "StmwZkP9QIJY4hJYQfM+pzHLe8xjexL+Kh/TrYXgY1m/4vJe0HJSsnRnaR8Yfqhh\n" +
      "LReqo94VHRYXR0rZQv4py0D9TrWaI8xHLve6ewhLPNRzyaI9fNrinbcPYZZOWnRi\n" +
      "ekgUBx+BX6nJOw==\n" +
      "=4Hy5\n" +
      "-----END PGP SIGNATURE-----";

      const onSignature = () => ({
        code: NodeGit.Error.CODE.OK,
        field: "gpgsig",
        signedData
      });

      var repo;
      var oid;
      var commit;
      var message;
      var parents;

      return NodeGit.Repository.open(reposPath)
      .then(function(repoResult) {
        repo = repoResult;
        return repo.getHeadCommit();
      })
      .then(function(headCommit) {
        message = headCommit.message() + "\n";
        parents = headCommit.parents();

        return headCommit.amendWithSignature(
          null,
          null,
          null,
          null,
          null,
          null,
          onSignature
        );
      })
      .then(function(oidResult) {
        oid = oidResult;
        return NodeGit.Commit.lookup(repo, oid);
      })
      .then(function(commitResult) {
        commit = commitResult;
        return commit.getSignature("gpgsig");
      })
      .then(function(signatureInfo) {
        assert.equal(signatureInfo.signature, signedData);
        assert.equal(commit.message(), message);
        assert.deepEqual(commit.parents(), parents);
      });
    });

    it("will respects overridden arguments", function() {
      const signedData = "-----BEGIN PGP SIGNATURE-----\n" +
      "\n" +
      "iQJHBAEBCAAxFiEEKdxGpJ93wnkLaBKfURjJKedOfEMFAlxPKUYTHHN0ZXZla0Bh\n" +
      "eG9zb2Z0LmNvbQAKCRBRGMkp5058Q3vcD/0Uf6P68g98Kbvsgjg/aidM1ujruXaw\n" +
      "X5WSsCAw+wWGICOj0n+KBnmQruI4HSFz3zykEshuOpcBv1X/+huwDeB/hBqonCU8\n" +
      "QdexCdWR70YbT1bufesUwV9v1qwE4WOmFxWXgwh55K0wDRkc0u2aLcwrJkIEEVfs\n" +
      "HqZyFzU4kwbGekY/m7d1DsBhWyKEGW9/25WMYmjWOWOiaFjeBaHLlxiEM8KGnMLH\n" +
      "wx37NuFuaABgi23AAcBGdeWy04TEuU4S51+bHM3RotrZ2cryW2lEbkkXodhIJcq0\n" +
      "RgrStCbvR0ehnOPdYSiRbxK8JNLZuNjHlK2g7wVi+C83vwMQuhU4H6OlYHGVr664\n" +
      "4YzL83FdIo7wiMOFd2OOMLlCfHgTun60FvjCs4WHjrwH1fQl287FRPLa/4olBSQP\n" +
      "yUXJaZdxm4cB4L/1pmbb/J/XUiOio3MpaN3GFm2hZloUlag1uPDBtCxTl5odvj4a\n" +
      "GOmTBWznXxF/zrKnQVSvv+EccNxYFc0VVjAxGgNqPzIxDAKtw1lE5pbBkFpFpNHz\n" +
      "StmwZkP9QIJY4hJYQfM+pzHLe8xjexL+Kh/TrYXgY1m/4vJe0HJSsnRnaR8Yfqhh\n" +
      "LReqo94VHRYXR0rZQv4py0D9TrWaI8xHLve6ewhLPNRzyaI9fNrinbcPYZZOWnRi\n" +
      "ekgUBx+BX6nJOw==\n" +
      "=4Hy5\n" +
      "-----END PGP SIGNATURE-----";

      const onSignature = () => ({
        code: NodeGit.Error.CODE.OK,
        field: "gpgsig",
        signedData
      });

      var repo;
      var oid;
      var commit;
      var message;
      var parents;
      var commitTree;

      var author = NodeGit.Signature.create(
        "Scooby Doo",
        "scoob@mystery.com",
        123456789,
        60
      );
      var committer = NodeGit.Signature.create(
        "Shaggy Rogers",
        "shaggy@mystery.com",
        987654321,
        90
      );
      var tree = Oid.fromString("f4661419a6fbbe865f78644fec722c023ce4b65f");

      return NodeGit.Repository.open(reposPath)
      .then(function(repoResult) {
        repo = repoResult;
        return repo.getHeadCommit();
      })
      .then(function(headCommit) {
        message = headCommit.message() + "\n";
        parents = headCommit.parents();

        return headCommit.amendWithSignature(
          null,
          author,
          committer,
          null,
          null,
          tree,
          onSignature
        );
      })
      .then(function(oidResult) {
        oid = oidResult;
        return NodeGit.Commit.lookup(repo, oid);
      })
      .then(function(commitResult) {
        commit = commitResult;
        return commit.getTree();
      })
      .then(function(commitTreeResult) {
        commitTree = commitTreeResult;
        return commit.getSignature("gpgsig");
      })
      .then(function(signatureInfo) {
        assert.equal(signatureInfo.signature, signedData);
        assert.equal(commit.message(), message);
        assert.deepEqual(commit.parents(), parents);
        assert.deepEqual(commitTree.id(), tree);
        assert.deepEqual(commit.author(), author);
        assert.deepEqual(commit.committer(), committer);
      });
    });

    it("can optionally skip signing process", function() {
      const onSignature = () => ({
        code: NodeGit.Error.CODE.PASSTHROUGH
      });

      var repo;
      var oid;
      var commit;
      var message;
      var parents;

      return NodeGit.Repository.open(reposPath)
      .then(function(repoResult) {
        repo = repoResult;
        return repo.getHeadCommit();
      })
      .then(function(headCommit) {
        message = headCommit.message();
        parents = headCommit.parents();

        return headCommit.amendWithSignature(
          null,
          null,
          null,
          null,
          null,
          null,
          onSignature
        );
      })
      .then(function(oidResult) {
        oid = oidResult;
        return NodeGit.Commit.lookup(repo, oid);
      })
      .then(function(commitResult) {
        commit = commitResult;
        return commit.getSignature("gpgsig")
        .then(function() {
          assert.fail("Should not have a signature");
        }, function(error) {
          if (error && error.message === "this commit is not signed") {
            return;
          }
          throw error;
        });
      })
      .then(function(signatureInfo) {
        assert.equal(commit.message(), message);
        assert.deepEqual(commit.parents(), parents);
      });
    });

    it("will throw if signing callback returns an error code", function() {
      const onSignature = () => ({
        code: NodeGit.Error.CODE.ERROR
      });

      return NodeGit.Repository.open(reposPath)
      .then(function(repo) {
        return repo.getHeadCommit();
      })
      .then(function(headCommit) {
        return headCommit.amendWithSignature(
          null,
          null,
          null,
          null,
          null,
          null,
          onSignature
        );
      })
      .then(function() {
        assert.fail("amendWithSignature should have failed.");
      }, function(error) {
        if (error && error.errno === NodeGit.Error.CODE.ERROR) {
          return;
        }
        throw error;
      });
    });
  });

  it("has an owner", function() {
    var owner = this.commit.owner();
    assert.ok(owner instanceof Repository);
  });

  it("can walk its repository's history", function(done) {
    var historyCount = 0;
    var expectedHistoryCount = 364;

    var history = this.commit.history();

    history.on("commit", function(commit) {
      historyCount++;
    });

    history.on("end", function(commits) {
      assert.equal(historyCount, expectedHistoryCount);
      assert.equal(commits.length, expectedHistoryCount);

      done();
    });

    history.on("error", function(err) {
      assert.ok(false);
    });

    history.start();
  });

  it("can fetch the master branch HEAD", function() {
    var repository = this.repository;

    return repository.getBranchCommit("master").then(function(commit) {
      return repository.getCommit(commit.sha());
    });
  });

  it("can fetch all of its parents", function() {
    return this.commit.getParents().then(function(parents) {
      assert.equal(parents.length, 1);

      var sha = parents[0].sha();
      assert.equal(sha, "ecfd36c80a3e9081f200dfda2391acadb56dac27");
    });
  });

  it("can specify a parents limit", function() {
    return this.commit.getParents(0).then(function(parents) {
      assert.equal(parents.length, 0);
    });
  });

  it("can specify limit higher than actual parents", function() {
    return this.commit.getParents(2).then(function(parents) {
      assert.equal(parents.length, 1);
    });
  });

  it("can fetch parents of a merge commit", function () {
    return NodeGit.Repository.open(reposPath)
    .then(function (repo) {
      return repo.getCommit("bf1da765e357a9b936d6d511f2c7b78e0de53632");
    })
    .then(function (commit) {
      return commit.getParents();
    })
    .then(function (parents) {
      assert.equal(parents.length, 2);
    });
  });

  it("has a parent count", function() {
    assert.equal(1, this.commit.parentcount());
  });

  it("can fetch a single parent", function() {
    return this.commit.parent(0).then(function(parent) {
      assert.strictEqual(parent.sha(),
                         "ecfd36c80a3e9081f200dfda2391acadb56dac27");
      // This used to crash due to a missing .repo property on the retrieved
      // parent.
      return parent.getTree().then(tree => assert(tree));
    });
  });

  it("can retrieve and walk a commit tree", function() {
    var commitTreeEntryCount = 0;
    var expectedCommitTreeEntryCount = 198;

    return this.commit.getTree().then(function(tree) {
      return new Promise(function(resolve, fail) {

        var treeWalker = tree.walk();

        treeWalker.on("entry", function(entry) {
          commitTreeEntryCount++;
        });

        treeWalker.on("error", function(error) {
          fail(error);
        });

        treeWalker.on("end", function(entries) {
          try {
            assert.equal(commitTreeEntryCount, expectedCommitTreeEntryCount);
            resolve();
          }
          catch (e) {
            fail(e);
          }
        });

        treeWalker.start();
      });
    });
  });

  it("can get the commit diff", function() {
    return this.commit.getDiff().then(function(diff) {
      assert.equal(diff.length, 1);
    });
  });

  // it("can get the commit diff in large context", function() {
    // For displaying the full file we can set context_lines of options.
    // Eventually this should work, but right now there is a
    // comment in diff.c in libgit2 of "/* TODO: parse thresholds */"
    // It will add the "--unified" but not with the "=x" part.
    // options.context_lines = 20000;
  // });

  it("can get the commit diff without whitespace", function() {
    var repo;
    var options = {};
    var GIT_DIFF_IGNORE_WHITESPACE = (1  ({
        code: NodeGit.Error.CODE.OK,
        field: "gpgsig",
        signedData
      });

      var test = this;
      var expectedCommitId = "ccb99bb20716ef7c37e92c7b8db029a7af7f747b";
      var fileName = "newfile.txt";
      var fileContent = "hello world";

      var repo;
      var index;
      var treeOid;
      var parent;

      return NodeGit.Repository.open(reposPath)
      .then(function(repoResult) {
        repo = repoResult;
        return fse.writeFile(path.join(repo.workdir(), fileName), fileContent);
      })
      .then(function() {
        return repo.refreshIndex();
      })
      .then(function(indexResult) {
        index = indexResult;
      })
      .then(function() {
        return index.addByPath(fileName);
      })
      .then(function() {
        return index.write();
      })
      .then(function() {
        return index.writeTree();
      })
      .then(function(oidResult) {
        treeOid = oidResult;
        return NodeGit.Reference.nameToId(repo, "HEAD");
      })
      .then(function(head) {
        return repo.getCommit(head);
      })
      .then(function(parentResult) {
        parent = parentResult;
        return Promise.all([
          NodeGit.Signature.create("Foo Bar", "foo@bar.com", 123456789, 60),
          NodeGit.Signature.create("Foo A Bar", "foo@bar.com", 987654321, 90)
        ]);
      })
      .then(function(signatures) {
        var author = signatures[0];
        var committer = signatures[1];

        return repo.createCommitWithSignature(
          null,
          author,
          committer,
          "message",
          treeOid,
          [parent],
          onSignature
        );
      })
      .then(function(commitId) {
        assert.equal(expectedCommitId, commitId);
        return NodeGit.Commit.lookup(repo, commitId);
      })
      .then(function(commit) {
        return commit.getSignature("gpgsig");
      })
      .then(function(signatureInfo) {
        assert.equal(signedData, signatureInfo.signature);
        return reinitialize(test);
      }, function(reason) {
        return reinitialize(test)
          .then(function() {
            return Promise.reject(reason);
          });
      });
    });

    it("Can create a signed commit in a repo and update existing ref",
      function() {
      var signedData = "-----BEGIN PGP SIGNATURE-----\n" +
        "Version: GnuPG v1.4.12 (Darwin)\n" +
        "\n" +
        "iQIcBAABAgAGBQJQ+FMIAAoJEH+LfPdZDSs1e3EQAJMjhqjWF+WkGLHju7pTw2al\n" +
        "o6IoMAhv0Z/LHlWhzBd9e7JeCnanRt12bAU7yvYp9+Z+z+dbwqLwDoFp8LVuigl8\n" +
        "JGLcnwiUW3rSvhjdCp9irdb4+bhKUnKUzSdsR2CK4/hC0N2i/HOvMYX+BRsvqweq\n" +
        "AsAkA6dAWh+gAfedrBUkCTGhlNYoetjdakWqlGL1TiKAefEZrtA1TpPkGn92vbLq\n" +
        "SphFRUY9hVn1ZBWrT3hEpvAIcZag3rTOiRVT1X1flj8B2vGCEr3RrcwOIZikpdaW\n" +
        "who/X3xh/DGbI2RbuxmmJpxxP/8dsVchRJJzBwG+yhwU/iN3MlV2c5D69tls/Dok\n" +
        "6VbyU4lm/ae0y3yR83D9dUlkycOnmmlBAHKIZ9qUts9X7mWJf0+yy2QxJVpjaTGG\n" +
        "cmnQKKPeNIhGJk2ENnnnzjEve7L7YJQF6itbx5VCOcsGh3Ocb3YR7DMdWjt7f8pu\n" +
        "c6j+q1rP7EpE2afUN/geSlp5i3x8aXZPDj67jImbVCE/Q1X9voCtyzGJH7MXR0N9\n" +
        "ZpRF8yzveRfMH8bwAJjSOGAFF5XkcR/RNY95o+J+QcgBLdX48h+ZdNmUf6jqlu3J\n" +
        "7KmTXXQcOVpN6dD3CmRFsbjq+x6RHwa8u1iGn+oIkX908r97ckfB/kHKH7ZdXIJc\n" +
        "cpxtDQQMGYFpXK/71stq\n" +
        "=ozeK\n" +
        "-----END PGP SIGNATURE-----";

      const onSignature = () => ({
        code: NodeGit.Error.CODE.OK,
        field: "gpgsig",
        signedData
      });

      var test = this;
      var expectedCommitId = "ccb99bb20716ef7c37e92c7b8db029a7af7f747b";
      var fileName = "newfile.txt";
      var fileContent = "hello world";

      var repo;
      var index;
      var treeOid;
      var parent;

      return NodeGit.Repository.open(reposPath)
      .then(function(repoResult) {
        repo = repoResult;
        return fse.writeFile(path.join(repo.workdir(), fileName), fileContent);
      })
      .then(function() {
        return repo.refreshIndex();
      })
      .then(function(indexResult) {
        index = indexResult;
      })
      .then(function() {
        return index.addByPath(fileName);
      })
      .then(function() {
        return index.write();
      })
      .then(function() {
        return index.writeTree();
      })
      .then(function(oidResult) {
        treeOid = oidResult;
        return NodeGit.Reference.nameToId(repo, "HEAD");
      })
      .then(function(head) {
        return repo.getCommit(head);
      })
      .then(function(parentResult) {
        parent = parentResult;
        return Promise.all([
          NodeGit.Signature.create("Foo Bar", "foo@bar.com", 123456789, 60),
          NodeGit.Signature.create("Foo A Bar", "foo@bar.com", 987654321, 90)
        ]);
      })
      .then(function(signatures) {
        var author = signatures[0];
        var committer = signatures[1];

        return repo.createCommitWithSignature(
          "HEAD",
          author,
          committer,
          "message",
          treeOid,
          [parent],
          onSignature);
      })
      .then(function(commitId) {
        assert.equal(expectedCommitId, commitId);
        return NodeGit.Commit.lookup(repo, commitId);
      })
      .then(function(commit) {
        return commit.getSignature("gpgsig");
      })
      .then(function(signatureInfo) {
        assert.equal(signedData, signatureInfo.signature);
        return repo.getHeadCommit();
      })
      .then(function(headCommit) {
        assert.equal(expectedCommitId, headCommit.id());
        return undoCommit()
        .then(function(){
          return reinitialize(test);
        });
      }, function(reason) {
        return reinitialize(test)
          .then(function() {
            return Promise.reject(reason);
          });
      });
    });

    it("Can create a signed commit in bare a repo and update non-existent ref",
      function() {
      var signedData = "-----BEGIN PGP SIGNATURE-----\n" +
        "\n" +
        "iQIzBAABCAAdFiEEHYpzGBSIRCy6QrNr0R10kNTwiG8FAlxcuSoACgkQ0R10kNTw\n" +
        "iG9sZA//Z6mrX5l//gjtn7Fy3Cg5khasNMZA15JUPzfoSyVkaYM7g/iZrJr4uZmm\n" +
        "lrhqxTDP4SUEL6dMOT0fjAudulP19Stv0mUMOoQ9cfvU0DAuFlI1z2Ny9IR+3hJK\n" +
        "XpIQCHZAAY9KrGajJvDO+WqukrMwKh2dwaQLgB2+cS7ehBpbW45+l+Bq4hTlULiJ\n" +
        "ohZ2SQhqj65knErdbfJ2B7yVlQbfG2vbD6qN4qJOkJpkFRdDhLmGnNjUj+vcmYO2\n" +
        "Be5CLyjuhYszzUqys6ix4UHr10KihFk31N17CgA2ZsDSzE3VsMCPlVPV9jWuMceJ\n" +
        "0IFsJEXFR4SOlRAq23BxD7aaYao6AF/YBhCQnDiuiQLCJ7WdUAmja6VPyEajAjoX\n" +
        "CkdDs1P4N9IeIPvJECn8Df4NEEkzW8sV3i96ryk066m1ZmZWemJ2zdGVbfR+AuFZ\n" +
        "7QwgBRidj3thIk0geh9g10+pbRuTzxNXklqxq4DQb3VEXIIJMUcqtN1bUPEPiLyA\n" +
        "SU3uJ1THyYznAVZy6aqw+mNq7Lg9gV65LRd0WtNqgneknDZoH3zXyzlcJexjHkRF\n" +
        "qt4K6w9TDA2Erda3wE4BM4MCgl1Hc629kH3ROCyWTFuJAEZtNDJPgIc2LTRDhHNd\n" +
        "+K937RhWU8lUnI2jJLmKdQDk2dnS1ZepFqA5Ynwza1qDSOgUqVw=\n" +
        "=M81P\n" +
        "-----END PGP SIGNATURE-----";

      const onSignature = () => ({
        code: NodeGit.Error.CODE.OK,
        field: "gpgsig",
        signedData
      });

      var expectedCommitId = "ef11571eb3590007712c7ee3b4a11cd9c6094e30";
      var fileName = "newfile.txt";
      var fileContent = "hello world";

      var repo;
      var index;
      var treeOid;

      return NodeGit.Repository.init(newRepoPath, 0)
      .then(function(repoResult) {
        repo = repoResult;
        return fse.writeFile(path.join(repo.workdir(), fileName), fileContent);
      })
      .then(function() {
        return repo.refreshIndex();
      })
      .then(function(indexResult) {
        index = indexResult;
      })
      .then(function() {
        return index.addByPath(fileName);
      })
      .then(function() {
        return index.write();
      })
      .then(function() {
        return index.writeTree();
      })
      .then(function(oidResult) {
        treeOid = oidResult;
        return Promise.all([
          NodeGit.Signature.create("Foo Bar", "foo@bar.com", 123456789, 60),
          NodeGit.Signature.create("Foo A Bar", "foo@bar.com", 987654321, 90)
        ]);
      })
      .then(function(signatures) {
        var author = signatures[0];
        var committer = signatures[1];

        return repo.createCommitWithSignature(
          "HEAD",
          author,
          committer,
          "message",
          treeOid,
          [],
          onSignature);
      })
      .then(function(commitId) {
        assert.equal(expectedCommitId, commitId);
        return NodeGit.Commit.lookup(repo, commitId);
      })
      .then(function(commit) {
        return commit.getSignature("gpgsig");
      })
      .then(function(signatureInfo) {
        assert.equal(signedData, signatureInfo.signature);
        return repo.getHeadCommit();
      })
      .then(function(headCommit) {
        assert.equal(expectedCommitId, headCommit.id());
      });
    });

    it("Can create a signed commit raw", function() {
      var expectedCommitId = "cc1401eaac4e9e77190e98a9353b305f0c6313d8";

      var signature = "-----BEGIN PGP SIGNATURE-----\n\n" +
       "iQEcBAABCAAGBQJarBhIAAoJEE8pfTd/81lKQA4IAL8Mu5kc4B/MX9s4XB26Ahap\n" +
       "n06kCx3RQ1KHMZIRomAjCnb48WieNVuy1y+Ut0RgfCxxrJ1ZnzFG3kF2bIKwIxNI\n" +
       "tYIC76iWny+mrVnb2mjKYjn/3F4c4VJGENq9ITiV1WeE4yJ8dHw2ox2D+hACzTvQ\n" +
       "KVroedk8BDFJxS6DFb20To35xbAVhwBnAGRcII4Wi5PPMFpqAhGLfq3Czv95ddSz\n" +
       "BHlyp27+YWSpV0Og0dqOEhsdDYaPrOBGRcoRiqjue+l5tgK/QerLFZ4aovZzpuEP\n" +
       "Xx1yZfqXIiy4Bo40qScSrdnmnp/kMq/NQGR3jYU+SleFHVKNFsya9UwurMaezY0=\n" +
       "=eZzi\n-----END PGP SIGNATURE-----";

      var commit_content = "tree f4661419a6fbbe865f78644fec722c023ce4b65f\n" +
       "parent 32789a79e71fbc9e04d3eff7425e1771eb595150\n" +
       "author Tyler Ang-Wanek  1521227848 -0700\n" +
       "committer Tyler Ang-Wanek  1521227848 -0700\n\n" +
       "GPG Signed commit\n";

      var repo;
      var commit;

      return NodeGit.Repository.open(reposPath)
      .then(function(repoResult) {
        repo = repoResult;
        return Commit.createWithSignature(
          repo,
          commit_content,
          signature,
          "gpgsig");
      })
      .then(function(commitId) {
        assert.equal(expectedCommitId, commitId);
        return NodeGit.Commit.lookup(repo, commitId);
      })
      .then(function(commitResult) {
        commit = commitResult;
        return commit.getSignature();
      })
      .then(function(signatureInfoDefault) {
        assert.equal(signature, signatureInfoDefault.signature);
        assert.equal(commit_content, signatureInfoDefault.signedData);

        return commit.getSignature("gpgsig");
      })
      .then(function(signatureInfo) {
        assert.equal(signature, signatureInfo.signature);
        assert.equal(commit_content, signatureInfo.signedData);
      });
    });

    it("Can retrieve the gpg signature from a commit", function() {
      var expectedSignedData =
        "tree f4661419a6fbbe865f78644fec722c023ce4b65f\n" +
        "parent 32789a79e71fbc9e04d3eff7425e1771eb595150\n" +
        "author Tyler Ang-Wanek  1521227848 -0700\n" +
        "committer Tyler Ang-Wanek  1521227848 -0700\n\n" +
        "GPG Signed commit\n";

      var expectedSignature =
        "-----BEGIN PGP SIGNATURE-----\n\n" +
        "iQEcBAABCAAGBQJarBhIAAoJEE8pfTd/81lKQA4IAL8Mu5kc4B/MX9s4XB26Ahap\n" +
        "n06kCx3RQ1KHMZIRomAjCnb48WieNVuy1y+Ut0RgfCxxrJ1ZnzFG3kF2bIKwIxNI\n" +
        "tYIC76iWny+mrVnb2mjKYjn/3F4c4VJGENq9ITiV1WeE4yJ8dHw2ox2D+hACzTvQ\n" +
        "KVroedk8BDFJxS6DFb20To35xbAVhwBnAGRcII4Wi5PPMFpqAhGLfq3Czv95ddSz\n" +
        "BHlyp27+YWSpV0Og0dqOEhsdDYaPrOBGRcoRiqjue+l5tgK/QerLFZ4aovZzpuEP\n" +
        "Xx1yZfqXIiy4Bo40qScSrdnmnp/kMq/NQGR3jYU+SleFHVKNFsya9UwurMaezY0=\n" +
        "=eZzi\n-----END PGP SIGNATURE-----";

      return NodeGit.Commit.lookup(
        this.repository,
        "cc1401eaac4e9e77190e98a9353b305f0c6313d8"
      )
        .then(function(commit) {
          return commit.getSignature();
        })
        .then(function(extractSignature) {
          assert.equal(
            extractSignature.signature,
            expectedSignature
          );
          assert.equal(
            extractSignature.signedData,
            expectedSignedData
          );
        });
    });

    it("Can be optionally skipped to create without signature", function() {
      const onSignature = () => ({
        code: NodeGit.Error.CODE.PASSTHROUGH
      });

      var test = this;
      var expectedCommitId = "c9bffe040519231d32431c101bca4efc0917f64c";
      var fileName = "newfile.txt";
      var fileContent = "hello world";

      var repo;
      var index;
      var treeOid;
      var parent;

      return NodeGit.Repository.open(reposPath)
      .then(function(repoResult) {
        repo = repoResult;
        return fse.writeFile(path.join(repo.workdir(), fileName), fileContent);
      })
      .then(function() {
        return repo.refreshIndex();
      })
      .then(function(indexResult) {
        index = indexResult;
      })
      .then(function() {
        return index.addByPath(fileName);
      })
      .then(function() {
        return index.write();
      })
      .then(function() {
        return index.writeTree();
      })
      .then(function(oidResult) {
        treeOid = oidResult;
        return NodeGit.Reference.nameToId(repo, "HEAD");
      })
      .then(function(head) {
        return repo.getCommit(head);
      })
      .then(function(parentResult) {
        parent = parentResult;
        return Promise.all([
          NodeGit.Signature.create("Foo Bar", "foo@bar.com", 123456789, 60),
          NodeGit.Signature.create("Foo A Bar", "foo@bar.com", 987654321, 90)
        ]);
      })
      .then(function(signatures) {
        var author = signatures[0];
        var committer = signatures[1];

        return repo.createCommitWithSignature(
          null,
          author,
          committer,
          "message",
          treeOid,
          [parent],
          onSignature
        );
      })
      .then(function(commitId) {
        assert.equal(expectedCommitId, commitId);
        return NodeGit.Commit.lookup(repo, commitId);
      })
      .then(function(commit) {
        return commit.getSignature("gpgsig")
          .then(function() {
            assert.fail("Should not have been able to retrieve gpgsig");
          }, function(error) {
            if (error && error.message === "this commit is not signed") {
              return;
            }
            throw error;
          });
      })
      .then(function() {
        return reinitialize(test);
      }, function(reason) {
        return reinitialize(test)
          .then(function() {
            return Promise.reject(reason);
          });
      });
    });

    it("Will throw if the signing cb returns an error code", function() {
      const onSignature = () => ({
        code: NodeGit.Error.CODE.ERROR
      });

      var test = this;
      var fileName = "newfile.txt";
      var fileContent = "hello world";

      var repo;
      var index;
      var treeOid;
      var parent;

      return NodeGit.Repository.open(reposPath)
      .then(function(repoResult) {
        repo = repoResult;
        return fse.writeFile(path.join(repo.workdir(), fileName), fileContent);
      })
      .then(function() {
        return repo.refreshIndex();
      })
      .then(function(indexResult) {
        index = indexResult;
      })
      .then(function() {
        return index.addByPath(fileName);
      })
      .then(function() {
        return index.write();
      })
      .then(function() {
        return index.writeTree();
      })
      .then(function(oidResult) {
        treeOid = oidResult;
        return NodeGit.Reference.nameToId(repo, "HEAD");
      })
      .then(function(head) {
        return repo.getCommit(head);
      })
      .then(function(parentResult) {
        parent = parentResult;
        return Promise.all([
          NodeGit.Signature.create("Foo Bar", "foo@bar.com", 123456789, 60),
          NodeGit.Signature.create("Foo A Bar", "foo@bar.com", 987654321, 90)
        ]);
      })
      .then(function(signatures) {
        var author = signatures[0];
        var committer = signatures[1];

        return repo.createCommitWithSignature(
          null,
          author,
          committer,
          "message",
          treeOid,
          [parent],
          onSignature
        );
      })
      .then(function() {
        assert.fail("createCommitWithSignature should have failed.");
      }, function(error) {
        if (error && error.errno === NodeGit.Error.CODE.ERROR) {
          return;
        }
        throw error;
      })
      .then(function() {
        return reinitialize(test);
      }, function(reason) {
        return reinitialize(test)
          .then(function() {
            return Promise.reject(reason);
          });
      });
    });
  });
});

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