var assert = require("assert");
var path = require("path");
var local = path.join.bind(path, __dirname);
var promisify = require("promisify-node");
var fse = promisify(require("fs-extra"));

describe("Rebase", function() {
  var NodeGit = require("../../");
  var RepoUtils = require("../utils/repository_setup");

  var repoPath = local("../repos/rebase");
  var ourBranchName = "ours";
  var theirBranchName = "theirs";

  var removeFileFromIndex = function(repository, fileName) {
    return repository.refreshIndex()
      .then(function(index) {
        return index.removeByPath(fileName)
          .then(function() {
            return index.write();
          })
          .then(function() {
            return index.writeTree();
          });
      });
  };

  beforeEach(function() {
    var test = this;
    return RepoUtils.createRepository(repoPath)
      .then(function(repo) {
        test.repository = repo;
      });
  });

  after(function() {
    return fse.remove(repoPath);
  });

  it("can cleanly fast-forward via rebase", function() {
    var ourFileName = "ourNewFile.txt";
    var theirFileName = "theirNewFile.txt";

    var ourFileContent = "I like Toll Roads. I have an EZ-Pass!";
    var theirFileContent = "I'm skeptical about Toll Roads";

    var ourSignature = NodeGit.Signature.create
          ("Ron Paul", "RonPaul@TollRoadsRBest.info", 123456789, 60);
    var theirSignature = NodeGit.Signature.create
          ("Greg Abbott", "Gregggg@IllTollYourFace.us", 123456789, 60);

    var repository = this.repository;
    var ourCommit;
    var theirBranch;

    return fse.writeFile(path.join(repository.workdir(), ourFileName),
        ourFileContent)
      // Load up the repository index and make our initial commit to HEAD
      .then(function() {
        return RepoUtils.addFileToIndex(repository, ourFileName);
      })
      .then(function(oid) {
        assert.equal(oid.toString(),
          "11ead82b1135b8e240fb5d61e703312fb9cc3d6a");

        return repository.createCommit("HEAD", ourSignature,
          ourSignature, "we made a commit", oid, []);
      })
      .then(function(commitOid) {
        assert.equal(commitOid.toString(),
          "91a183f87842ebb7a9b08dad8bc2473985796844");

        return repository.getCommit(commitOid).then(function(commit) {
          ourCommit = commit;
        }).then(function() {
          return repository.createBranch(ourBranchName, commitOid)
            .then(function(branch) {
              return repository.createBranch(theirBranchName, commitOid);
            });
        });
      })
      .then(function(branch) {
        theirBranch = branch;
        return fse.writeFile(path.join(repository.workdir(), theirFileName),
          theirFileContent);
      })
      .then(function() {
        return RepoUtils.addFileToIndex(repository, theirFileName);
      })
      .then(function(oid) {
        assert.equal(oid.toString(),
          "76631cb5a290dafe2959152626bb90f2a6d8ec94");

        return repository.createCommit(theirBranch.name(), theirSignature,
          theirSignature, "they made a commit", oid, [ourCommit]);
      })
      .then(function(commitOid) {
        assert.equal(commitOid.toString(),
          "0e9231d489b3f4303635fc4b0397830da095e7e7");
      })
      .then(function() {
        // unstage changes so that we can begin a rebase
        return removeFileFromIndex(repository, theirFileName);
      })
      .then(function() {
        return Promise.all([
          repository.getReference(ourBranchName),
          repository.getReference(theirBranchName)
        ]);
      })
      .then(function(refs) {
        assert.equal(refs.length, 2);

        return Promise.all([
          NodeGit.AnnotatedCommit.fromRef(repository, refs[0]),
          NodeGit.AnnotatedCommit.fromRef(repository, refs[1])
        ]);
      })
      .then(function(annotatedCommits) {
        assert.equal(annotatedCommits.length, 2);

        var ourAnnotatedCommit = annotatedCommits[0];
        var theirAnnotatedCommit = annotatedCommits[1];

        assert.equal(ourAnnotatedCommit.id().toString(),
          "91a183f87842ebb7a9b08dad8bc2473985796844");
        assert.equal(theirAnnotatedCommit.id().toString(),
          "0e9231d489b3f4303635fc4b0397830da095e7e7");

        return NodeGit.Rebase.init(repository, ourAnnotatedCommit,
          theirAnnotatedCommit, theirAnnotatedCommit);
      })
      .then(function(rebase) {
        assert.equal(rebase.operationEntrycount(), 0);

        return rebase.finish(ourSignature);
      })
      .then(function() {
        return repository.getBranchCommit(ourBranchName);
      })
      .then(function(commit) {
        assert.equal(commit.id().toString(),
          "0e9231d489b3f4303635fc4b0397830da095e7e7");
      });
  });

  it("can cleanly rebase a branch onto another branch", function() {
    var baseFileName = "baseNewFile.txt";
    var ourFileName = "ourNewFile.txt";
    var theirFileName = "theirNewFile.txt";

    var baseFileContent = "How do you feel about Toll Roads?";
    var ourFileContent = "I like Toll Roads. I have an EZ-Pass!";
    var theirFileContent = "I'm skeptical about Toll Roads";

    var ourSignature = NodeGit.Signature.create
          ("Ron Paul", "RonPaul@TollRoadsRBest.info", 123456789, 60);
    var theirSignature = NodeGit.Signature.create
          ("Greg Abbott", "Gregggg@IllTollYourFace.us", 123456789, 60);

    var repository = this.repository;
    var ourCommit;
    var ourBranch;
    var theirBranch;
    var rebase;

    return fse.writeFile(path.join(repository.workdir(), baseFileName),
      baseFileContent)
      // Load up the repository index and make our initial commit to HEAD
      .then(function() {
        return RepoUtils.addFileToIndex(repository, baseFileName);
      })
      .then(function(oid) {
        assert.equal(oid.toString(),
          "b5cdc109d437c4541a13fb7509116b5f03d5039a");

        return repository.createCommit("HEAD", ourSignature,
          ourSignature, "initial commit", oid, []);
      })
      .then(function(commitOid) {
        assert.equal(commitOid.toString(),
          "be03abdf0353d05924c53bebeb0e5bb129cda44a");

        return repository.getCommit(commitOid).then(function(commit) {
          ourCommit = commit;
        }).then(function() {
          return repository.createBranch(ourBranchName, commitOid)
            .then(function(branch) {
              ourBranch = branch;
              return repository.createBranch(theirBranchName, commitOid);
            });
        });
      })
      .then(function(branch) {
        theirBranch = branch;
        return fse.writeFile(path.join(repository.workdir(), theirFileName),
          theirFileContent);
      })
      .then(function() {
        return RepoUtils.addFileToIndex(repository, theirFileName);
      })
      .then(function(oid) {
        assert.equal(oid.toString(),
          "be5f0fd38a39a67135ad68921c93cd5c17fefb3d");

        return repository.createCommit(theirBranch.name(), theirSignature,
          theirSignature, "they made a commit", oid, [ourCommit]);
      })
      .then(function(commitOid) {
        assert.equal(commitOid.toString(),
          "e9ebd92f2f4778baf6fa8e92f0c68642f931a554");

        return removeFileFromIndex(repository, theirFileName);
      })
      .then(function() {
        return fse.remove(path.join(repository.workdir(), theirFileName));
      })
      .then(function() {
        return fse.writeFile(path.join(repository.workdir(), ourFileName),
          ourFileContent);
      })
      .then(function() {
        return RepoUtils.addFileToIndex(repository, ourFileName);
      })
      .then(function(oid) {
        assert.equal(oid.toString(),
          "77867fc0bfeb3f80ab18a78c8d53aa3a06207047");

          return repository.createCommit(ourBranch.name(), ourSignature,
            ourSignature, "we made a commit", oid, [ourCommit]);
      })
      .then(function(commitOid) {
        assert.equal(commitOid.toString(),
          "e7f37ee070837052937e24ad8ba66f6d83ae7941");

        return removeFileFromIndex(repository, ourFileName);
      })
      .then(function() {
        return fse.remove(path.join(repository.workdir(), ourFileName));
      })
      .then(function() {
        return repository.checkoutBranch(ourBranchName);
      })
      .then(function() {
        return Promise.all([
          repository.getReference(ourBranchName),
          repository.getReference(theirBranchName)
        ]);
      })
      .then(function(refs) {
        assert.equal(refs.length, 2);

        return Promise.all([
          NodeGit.AnnotatedCommit.fromRef(repository, refs[0]),
          NodeGit.AnnotatedCommit.fromRef(repository, refs[1])
        ]);
      })
      .then(function(annotatedCommits) {
        assert.equal(annotatedCommits.length, 2);

        var ourAnnotatedCommit = annotatedCommits[0];
        var theirAnnotatedCommit = annotatedCommits[1];

        assert.equal(ourAnnotatedCommit.id().toString(),
          "e7f37ee070837052937e24ad8ba66f6d83ae7941");
        assert.equal(theirAnnotatedCommit.id().toString(),
          "e9ebd92f2f4778baf6fa8e92f0c68642f931a554");

        return NodeGit.Rebase.init(repository, ourAnnotatedCommit,
          theirAnnotatedCommit, null);
      })
      .then(function(newRebase) {
        rebase = newRebase;

        // there should only be 1 rebase operation to perform
        assert.equal(rebase.operationEntrycount(), 1);

        return rebase.next();
      })
      .then(function(rebaseOperation) {
        assert.equal(rebaseOperation.type(),
          NodeGit.RebaseOperation.REBASE_OPERATION.PICK);
        assert.equal(rebaseOperation.id().toString(),
          "e7f37ee070837052937e24ad8ba66f6d83ae7941");

        return rebase.commit(null, ourSignature);
      })
      .then(function(commitOid) {
        assert.equal(commitOid.toString(),
          "b937100ee0ea17ef20525306763505a7fe2be29e");

        // git_rebase_operation_current returns the index of the rebase
        // operation that was last applied, so after the first operation, it
        // should be 0.
        assert.equal(rebase.operationCurrent(), 0);

        return rebase.finish(ourSignature, {});
      })
      .then(function(result) {
        assert.equal(result, 0);

        return repository.getBranchCommit(ourBranchName);
      })
      .then(function(commit) {
        // verify that the "ours" branch has moved to the correct place
        assert.equal(commit.id().toString(),
          "b937100ee0ea17ef20525306763505a7fe2be29e");

        return commit.parent(0);
      })
      .then(function(commit) {
        // verify that we are on top of "their commit"
        assert.equal(commit.id().toString(),
          "e9ebd92f2f4778baf6fa8e92f0c68642f931a554");
      });
  });

  it("can rebase 2 branches with conflicts on a single file", function() {
    var fileName = "everyonesFile.txt";

    var baseFileContent = "How do you feel about Toll Roads?\n";
    var ourFileContent = "I like Toll Roads. I have an EZ-Pass!\n";
    var theirFileContent = "I'm skeptical about Toll Roads\n";

    var expectedConflictedFileContent =
      "How do you feel about Toll Roads?\n" +
      "<<<<<<< theirs\n" +
      "I'm skeptical about Toll Roads\n" +
      "=======\n" +
      "I like Toll Roads. I have an EZ-Pass!\n" +
      ">>>>>>> we made a commit\n";

    var conflictSolvedFileContent =
      "How do you feel about Toll Roads?\n" +
      "He's skeptical about Toll Roads,\n" +
      "but I like Toll Roads. I have an EZ-Pass!\n";

    var ourSignature = NodeGit.Signature.create
          ("Ron Paul", "RonPaul@TollRoadsRBest.info", 123456789, 60);
    var theirSignature = NodeGit.Signature.create
          ("Greg Abbott", "Gregggg@IllTollYourFace.us", 123456789, 60);

    var repository = this.repository;
    var ourCommit;
    var ourBranch;
    var theirBranch;
    var rebase;

    return fse.writeFile(path.join(repository.workdir(), fileName),
      baseFileContent)
      .then(function() {
        return RepoUtils.addFileToIndex(repository, fileName);
      })
      .then(function(oid) {
        assert.equal(oid.toString(),
          "044704f62399fecbe22da6d7d47b14e52625630e");

        return repository.createCommit("HEAD", ourSignature,
          ourSignature, "initial commit", oid, []);
      })
      .then(function(commitOid) {
        assert.equal(commitOid.toString(),
          "80111c46ac73b857a3493b24c81df08639b5de99");

        return repository.getCommit(commitOid).then(function(commit) {
          ourCommit = commit;
        }).then(function() {
          return repository.createBranch(ourBranchName, commitOid)
            .then(function(branch) {
              ourBranch = branch;
              return repository.createBranch(theirBranchName, commitOid);
            });
        });
      })
      .then(function(branch) {
        theirBranch = branch;
        return fse.writeFile(path.join(repository.workdir(), fileName),
          baseFileContent + theirFileContent);
      })
      .then(function() {
        return RepoUtils.addFileToIndex(repository, fileName);
      })
      .then(function(oid) {
        assert.equal(oid.toString(),
          "b826e989aca7647bea64810f0a2a38acbbdd4c1a");

        return repository.createCommit(theirBranch.name(), theirSignature,
          theirSignature, "they made a commit", oid, [ourCommit]);
      })
      .then(function(commitOid) {
        assert.equal(commitOid.toString(),
          "b3c355bb606ec7da87174dfa1a0b0c0e3dc97bc0");

        return fse.writeFile(path.join(repository.workdir(), fileName),
          baseFileContent + ourFileContent);
      })
      .then(function() {
        return RepoUtils.addFileToIndex(repository, fileName);
      })
      .then(function(oid) {
        assert.equal(oid.toString(),
          "e7fe41bf7c0c28766887a63ffe2f03f624276fbe");

          return repository.createCommit(ourBranch.name(), ourSignature,
            ourSignature, "we made a commit", oid, [ourCommit]);
      })
      .then(function(commitOid) {
        assert.equal(commitOid.toString(),
          "28cfeb17f66132edb3c4dacb7ff38e8dd48a1844");

        var opts = {
          checkoutStrategy: NodeGit.Checkout.STRATEGY.FORCE
        };

        return NodeGit.Checkout.head(repository, opts);
      })
      .then(function() {
        return Promise.all([
          repository.getReference(ourBranchName),
          repository.getReference(theirBranchName)
        ]);
      })
      .then(function(refs) {
        assert.equal(refs.length, 2);

        return Promise.all([
          NodeGit.AnnotatedCommit.fromRef(repository, refs[0]),
          NodeGit.AnnotatedCommit.fromRef(repository, refs[1])
        ]);
      })
      .then(function(annotatedCommits) {
        assert.equal(annotatedCommits.length, 2);

        var ourAnnotatedCommit = annotatedCommits[0];
        var theirAnnotatedCommit = annotatedCommits[1];

        assert.equal(ourAnnotatedCommit.id().toString(),
          "28cfeb17f66132edb3c4dacb7ff38e8dd48a1844");
        assert.equal(theirAnnotatedCommit.id().toString(),
          "b3c355bb606ec7da87174dfa1a0b0c0e3dc97bc0");

        return NodeGit.Rebase.init(repository, ourAnnotatedCommit,
          theirAnnotatedCommit, null);
      })
      .then(function(newRebase) {
        rebase = newRebase;

        // there should only be 1 rebase operation to perform
        assert.equal(rebase.operationEntrycount(), 1);

        return rebase.next();
      })
      .then(function(rebaseOperation) {
        assert.equal(rebaseOperation.type(),
          NodeGit.RebaseOperation.REBASE_OPERATION.PICK);
        assert.equal(rebaseOperation.id().toString(),
          "28cfeb17f66132edb3c4dacb7ff38e8dd48a1844");

        return repository.refreshIndex()
          .then(function(index) {
            assert.ok(index.hasConflicts());
          });
      })
      .then(function() {
        return fse.readFile(path.join(repository.workdir(), fileName), "utf8")
          .then(function(fileContent) {
            assert.equal(fileContent, expectedConflictedFileContent);

            return fse.writeFile(path.join(repository.workdir(), fileName),
              conflictSolvedFileContent);
          });
      })
      .then(function() {
        return RepoUtils.addFileToIndex(repository, fileName);
      })
      .then(function(oid) {
        return repository.refreshIndex()
          .then(function(index) {
            assert.ok(!index.hasConflicts());

            return rebase.commit(null, ourSignature);
          });
      })
      .then(function(commitOid) {
        assert.equal(commitOid.toString(),
          "ef6d0e95167435b3d58f51ab165948c72f6f94b6");

        return rebase.finish(ourSignature);
      })
      .then(function(result) {
        assert.equal(result, 0);

        return repository.getBranchCommit(ourBranchName);
      })
      .then(function(commit) {
        // verify that the "ours" branch has moved to the correct place
        assert.equal(commit.id().toString(),
          "ef6d0e95167435b3d58f51ab165948c72f6f94b6");

        return commit.parent(0);
      })
      .then(function(commit) {
        // verify that we are on top of "their commit"
        assert.equal(commit.id().toString(),
          "b3c355bb606ec7da87174dfa1a0b0c0e3dc97bc0");
      });
  });

  it("can abort an in-progress rebase", function() {
    var baseFileName = "baseNewFile.txt";
    var ourFileName = "ourNewFile.txt";
    var theirFileName = "theirNewFile.txt";

    var baseFileContent = "How do you feel about Toll Roads?";
    var ourFileContent = "I like Toll Roads. I have an EZ-Pass!";
    var theirFileContent = "I'm skeptical about Toll Roads";

    var ourSignature = NodeGit.Signature.create
          ("Ron Paul", "RonPaul@TollRoadsRBest.info", 123456789, 60);
    var theirSignature = NodeGit.Signature.create
          ("Greg Abbott", "Gregggg@IllTollYourFace.us", 123456789, 60);

    var repository = this.repository;
    var ourCommit;
    var ourBranch;
    var theirBranch;
    var rebase;

    return fse.writeFile(path.join(repository.workdir(), baseFileName),
      baseFileContent)
      // Load up the repository index and make our initial commit to HEAD
      .then(function() {
        return RepoUtils.addFileToIndex(repository, baseFileName);
      })
      .then(function(oid) {
        assert.equal(oid.toString(),
          "b5cdc109d437c4541a13fb7509116b5f03d5039a");

        return repository.createCommit("HEAD", ourSignature,
          ourSignature, "initial commit", oid, []);
      })
      .then(function(commitOid) {
        assert.equal(commitOid.toString(),
          "be03abdf0353d05924c53bebeb0e5bb129cda44a");

        return repository.getCommit(commitOid).then(function(commit) {
          ourCommit = commit;
        }).then(function() {
          return repository.createBranch(ourBranchName, commitOid)
            .then(function(branch) {
              ourBranch = branch;
              return repository.createBranch(theirBranchName, commitOid);
            });
        });
      })
      .then(function(branch) {
        theirBranch = branch;
        return fse.writeFile(path.join(repository.workdir(), theirFileName),
          theirFileContent);
      })
      .then(function() {
        return RepoUtils.addFileToIndex(repository, theirFileName);
      })
      .then(function(oid) {
        assert.equal(oid.toString(),
          "be5f0fd38a39a67135ad68921c93cd5c17fefb3d");

        return repository.createCommit(theirBranch.name(), theirSignature,
          theirSignature, "they made a commit", oid, [ourCommit]);
      })
      .then(function(commitOid) {
        assert.equal(commitOid.toString(),
          "e9ebd92f2f4778baf6fa8e92f0c68642f931a554");

        return removeFileFromIndex(repository, theirFileName);
      })
      .then(function() {
        return fse.remove(path.join(repository.workdir(), theirFileName));
      })
      .then(function() {
        return fse.writeFile(path.join(repository.workdir(), ourFileName),
          ourFileContent);
      })
      .then(function() {
        return RepoUtils.addFileToIndex(repository, ourFileName);
      })
      .then(function(oid) {
        assert.equal(oid.toString(),
          "77867fc0bfeb3f80ab18a78c8d53aa3a06207047");

          return repository.createCommit(ourBranch.name(), ourSignature,
            ourSignature, "we made a commit", oid, [ourCommit]);
      })
      .then(function(commitOid) {
        assert.equal(commitOid.toString(),
          "e7f37ee070837052937e24ad8ba66f6d83ae7941");

        return removeFileFromIndex(repository, ourFileName);
      })
      .then(function() {
        return fse.remove(path.join(repository.workdir(), ourFileName));
      })
      .then(function() {
        return repository.checkoutBranch(ourBranchName);
      })
      .then(function() {
        return Promise.all([
          repository.getReference(ourBranchName),
          repository.getReference(theirBranchName)
        ]);
      })
      .then(function(refs) {
        assert.equal(refs.length, 2);

        return Promise.all([
          NodeGit.AnnotatedCommit.fromRef(repository, refs[0]),
          NodeGit.AnnotatedCommit.fromRef(repository, refs[1])
        ]);
      })
      .then(function(annotatedCommits) {
        assert.equal(annotatedCommits.length, 2);

        var ourAnnotatedCommit = annotatedCommits[0];
        var theirAnnotatedCommit = annotatedCommits[1];

        assert.equal(ourAnnotatedCommit.id().toString(),
          "e7f37ee070837052937e24ad8ba66f6d83ae7941");
        assert.equal(theirAnnotatedCommit.id().toString(),
          "e9ebd92f2f4778baf6fa8e92f0c68642f931a554");

        return NodeGit.Rebase.init(repository, ourAnnotatedCommit,
          theirAnnotatedCommit, null);
      })
      .then(function(newRebase) {
        rebase = newRebase;

        // there should only be 1 rebase operation to perform
        assert.equal(rebase.operationEntrycount(), 1);

        return rebase.next();
      })
      .then(function(rebaseOperation) {
        assert.equal(rebaseOperation.type(),
          NodeGit.RebaseOperation.REBASE_OPERATION.PICK);
        assert.equal(rebaseOperation.id().toString(),
          "e7f37ee070837052937e24ad8ba66f6d83ae7941");

        return rebase.commit(null, ourSignature);
      })
      .then(function(commitOid) {
        assert.equal(commitOid.toString(),
          "b937100ee0ea17ef20525306763505a7fe2be29e");

        return repository.getBranchCommit("HEAD")
          .then(function(commit) {
            // verify that HEAD is on the rebased commit
            assert.equal(commit.id().toString(), commitOid.toString());
          });
      })
      .then(function() {
        return rebase.abort(ourSignature);
      })
      .then(function() {
        return NodeGit.Rebase.open(repository)
          .then(function(existingRebase) {
            assert.fail(existingRebase, undefined,
              "There should not be a rebase in progress");
          })
          .catch(function(e) {
            assert.equal(e.message, "there is no rebase in progress");
          });
      })
      .then(function() {
        return Promise.all([
          repository.getBranchCommit("HEAD"),
          repository.getBranchCommit(ourBranchName)
        ]);
      })
      .then(function(commits) {
        assert.equal(commits.length, 2);

        // verify that 'HEAD' and 'ours' are back to their pre-rebase state
        assert.equal(commits[0].id().toString(),
          "e7f37ee070837052937e24ad8ba66f6d83ae7941");
        assert.equal(commits[1].id().toString(),
          "e7f37ee070837052937e24ad8ba66f6d83ae7941");
      });
  });

  it("can fast-forward via rebase using the convenience methods",
    function() {
    var ourFileName = "ourNewFile.txt";
    var theirFileName = "theirNewFile.txt";

    var ourFileContent = "I like Toll Roads. I have an EZ-Pass!";
    var theirFileContent = "I'm skeptical about Toll Roads";

    var ourSignature = NodeGit.Signature.create
          ("Ron Paul", "RonPaul@TollRoadsRBest.info", 123456789, 60);
    var theirSignature = NodeGit.Signature.create
          ("Greg Abbott", "Gregggg@IllTollYourFace.us", 123456789, 60);

    var repository = this.repository;
    var ourCommit;
    var theirBranch;

    return fse.writeFile(path.join(repository.workdir(), ourFileName),
        ourFileContent)
      // Load up the repository index and make our initial commit to HEAD
      .then(function() {
        return RepoUtils.addFileToIndex(repository, ourFileName);
      })
      .then(function(oid) {
        assert.equal(oid.toString(),
          "11ead82b1135b8e240fb5d61e703312fb9cc3d6a");

        return repository.createCommit("HEAD", ourSignature,
          ourSignature, "we made a commit", oid, []);
      })
      .then(function(commitOid) {
        assert.equal(commitOid.toString(),
          "91a183f87842ebb7a9b08dad8bc2473985796844");

        return repository.getCommit(commitOid).then(function(commit) {
          ourCommit = commit;
        }).then(function() {
          return repository.createBranch(ourBranchName, commitOid)
            .then(function(branch) {
              return repository.createBranch(theirBranchName, commitOid);
            });
        });
      })
      .then(function(branch) {
        theirBranch = branch;
        return fse.writeFile(path.join(repository.workdir(), theirFileName),
          theirFileContent);
      })
      .then(function() {
        return RepoUtils.addFileToIndex(repository, theirFileName);
      })
      .then(function(oid) {
        assert.equal(oid.toString(),
          "76631cb5a290dafe2959152626bb90f2a6d8ec94");

        return repository.createCommit(theirBranch.name(), theirSignature,
          theirSignature, "they made a commit", oid, [ourCommit]);
      })
      .then(function(commitOid) {
        assert.equal(commitOid.toString(),
          "0e9231d489b3f4303635fc4b0397830da095e7e7");
      })
      .then(function() {
        // unstage changes so that we can begin a rebase
        return removeFileFromIndex(repository, theirFileName);
      })
      .then(function() {
        return Promise.all([
          repository.getReference(ourBranchName),
          repository.getReference(theirBranchName)
        ]);
      })
      .then(function(refs) {
        assert.equal(refs.length, 2);

        return Promise.all([
          NodeGit.AnnotatedCommit.fromRef(repository, refs[0]),
          NodeGit.AnnotatedCommit.fromRef(repository, refs[1])
        ]);
      })
      .then(function(annotatedCommits) {
        assert.equal(annotatedCommits.length, 2);

        var ourAnnotatedCommit = annotatedCommits[0];
        var theirAnnotatedCommit = annotatedCommits[1];

        assert.equal(ourAnnotatedCommit.id().toString(),
          "91a183f87842ebb7a9b08dad8bc2473985796844");
        assert.equal(theirAnnotatedCommit.id().toString(),
          "0e9231d489b3f4303635fc4b0397830da095e7e7");

        return fse.remove(path.join(repository.workdir(), theirFileName));
      })
      .then(function() {
        return repository.rebaseBranches(ourBranchName, theirBranchName, null,
          ourSignature);
      })
      .then(function(commit) {
        assert.equal(commit.id().toString(),
          "0e9231d489b3f4303635fc4b0397830da095e7e7");
      });
  });

  it("can rebase using the convenience method", function() {
    var baseFileName = "baseNewFile.txt";
    var ourFileName = "ourNewFile.txt";
    var theirFileName = "theirNewFile.txt";

    var baseFileContent = "How do you feel about Toll Roads?";
    var ourFileContent = "I like Toll Roads. I have an EZ-Pass!";
    var theirFileContent = "I'm skeptical about Toll Roads";

    var ourSignature = NodeGit.Signature.create
          ("Ron Paul", "RonPaul@TollRoadsRBest.info", 123456789, 60);
    var theirSignature = NodeGit.Signature.create
          ("Greg Abbott", "Gregggg@IllTollYourFace.us", 123456789, 60);

    var repository = this.repository;
    var ourCommit;
    var ourBranch;
    var theirBranch;

    var nextCalls = 0;

    return fse.writeFile(path.join(repository.workdir(), baseFileName),
      baseFileContent)
      // Load up the repository index and make our initial commit to HEAD
      .then(function() {
        return RepoUtils.addFileToIndex(repository, baseFileName);
      })
      .then(function(oid) {
        assert.equal(oid.toString(),
          "b5cdc109d437c4541a13fb7509116b5f03d5039a");

        return repository.createCommit("HEAD", ourSignature,
          ourSignature, "initial commit", oid, []);
      })
      .then(function(commitOid) {
        assert.equal(commitOid.toString(),
          "be03abdf0353d05924c53bebeb0e5bb129cda44a");

        return repository.getCommit(commitOid).then(function(commit) {
          ourCommit = commit;
        }).then(function() {
          return repository.createBranch(ourBranchName, commitOid)
            .then(function(branch) {
              ourBranch = branch;
              return repository.createBranch(theirBranchName, commitOid);
            });
        });
      })
      .then(function(branch) {
        theirBranch = branch;
        return fse.writeFile(path.join(repository.workdir(), theirFileName),
          theirFileContent);
      })
      .then(function() {
        return RepoUtils.addFileToIndex(repository, theirFileName);
      })
      .then(function(oid) {
        assert.equal(oid.toString(),
          "be5f0fd38a39a67135ad68921c93cd5c17fefb3d");

        return repository.createCommit(theirBranch.name(), theirSignature,
          theirSignature, "they made a commit", oid, [ourCommit]);
      })
      .then(function(commitOid) {
        assert.equal(commitOid.toString(),
          "e9ebd92f2f4778baf6fa8e92f0c68642f931a554");

        return removeFileFromIndex(repository, theirFileName);
      })
      .then(function() {
        return fse.remove(path.join(repository.workdir(), theirFileName));
      })
      .then(function() {
        return fse.writeFile(path.join(repository.workdir(), ourFileName),
          ourFileContent);
      })
      .then(function() {
        return RepoUtils.addFileToIndex(repository, ourFileName);
      })
      .then(function(oid) {
        assert.equal(oid.toString(),
          "77867fc0bfeb3f80ab18a78c8d53aa3a06207047");

          return repository.createCommit(ourBranch.name(), ourSignature,
            ourSignature, "we made a commit", oid, [ourCommit]);
      })
      .then(function(commitOid) {
        assert.equal(commitOid.toString(),
          "e7f37ee070837052937e24ad8ba66f6d83ae7941");

        return removeFileFromIndex(repository, ourFileName);
      })
      .then(function() {
        return fse.remove(path.join(repository.workdir(), ourFileName));
      })
      .then(function() {
        return repository.checkoutBranch(ourBranchName);
      })
      .then(function() {
        return repository.rebaseBranches(ourBranchName, theirBranchName,
          null, ourSignature, function(rebase) {
            assert.ok(rebase instanceof NodeGit.Rebase);

            nextCalls++;

            return Promise.resolve();
          });
      })
      .then(function(commit) {
        // verify that the beforeNextFn callback was called
        assert.equal(nextCalls, 2);

        // verify that the "ours" branch has moved to the correct place
        assert.equal(commit.id().toString(),
          "b937100ee0ea17ef20525306763505a7fe2be29e");

        return commit.parent(0);
      })
      .then(function(commit) {
        // verify that we are on top of "their commit"
        assert.equal(commit.id().toString(),
          "e9ebd92f2f4778baf6fa8e92f0c68642f931a554");
      });
  });

  it("beforeFinishFn sync callback receives correct rebase data", function() {
    var baseFileName = "baseNewFile.txt";
    var ourFileName = "ourNewFile.txt";
    var theirFileName = "theirNewFile.txt";

    var baseFileContent = "How do you feel about Toll Roads?";
    var ourFileContent = "I like Toll Roads. I have an EZ-Pass!";
    var theirFileContent = "I'm skeptical about Toll Roads";

    var ourSignature = NodeGit.Signature.create
          ("Ron Paul", "RonPaul@TollRoadsRBest.info", 123456789, 60);
    var theirSignature = NodeGit.Signature.create
          ("Greg Abbott", "Gregggg@IllTollYourFace.us", 123456789, 60);

    var repository = this.repository;
    var ourCommit;
    var ourBranch;
    var theirBranch;
    var ourBranchShaPreRebase;
    var ourBranchShaPostRebase = "b937100ee0ea17ef20525306763505a7fe2be29e";
    var theirBranchSha;

    var nextCalls = 0;

    var calledBeforeFinishFn = false;

    return fse.writeFile(path.join(repository.workdir(), baseFileName),
      baseFileContent)
      // Load up the repository index and make our initial commit to HEAD
      .then(function() {
        return RepoUtils.addFileToIndex(repository, baseFileName);
      })
      .then(function(oid) {
        assert.equal(oid.toString(),
          "b5cdc109d437c4541a13fb7509116b5f03d5039a");

        return repository.createCommit("HEAD", ourSignature,
          ourSignature, "initial commit", oid, []);
      })
      .then(function(commitOid) {
        assert.equal(commitOid.toString(),
          "be03abdf0353d05924c53bebeb0e5bb129cda44a");

        return repository.getCommit(commitOid).then(function(commit) {
          ourCommit = commit;
        }).then(function() {
          return repository.createBranch(ourBranchName, commitOid)
            .then(function(branch) {
              ourBranch = branch;
              return repository.createBranch(theirBranchName, commitOid);
            });
        });
      })
      .then(function(branch) {
        theirBranch = branch;
        return fse.writeFile(path.join(repository.workdir(), theirFileName),
          theirFileContent);
      })
      .then(function() {
        return RepoUtils.addFileToIndex(repository, theirFileName);
      })
      .then(function(oid) {
        assert.equal(oid.toString(),
          "be5f0fd38a39a67135ad68921c93cd5c17fefb3d");

        return repository.createCommit(theirBranch.name(), theirSignature,
          theirSignature, "they made a commit", oid, [ourCommit]);
      })
      .then(function(commitOid) {
        theirBranchSha = commitOid.toString();
        assert.equal(theirBranchSha,
          "e9ebd92f2f4778baf6fa8e92f0c68642f931a554");

        return removeFileFromIndex(repository, theirFileName);
      })
      .then(function() {
        return fse.remove(path.join(repository.workdir(), theirFileName));
      })
      .then(function() {
        return fse.writeFile(path.join(repository.workdir(), ourFileName),
          ourFileContent);
      })
      .then(function() {
        return RepoUtils.addFileToIndex(repository, ourFileName);
      })
      .then(function(oid) {
        assert.equal(oid.toString(),
          "77867fc0bfeb3f80ab18a78c8d53aa3a06207047");

          return repository.createCommit(ourBranch.name(), ourSignature,
            ourSignature, "we made a commit", oid, [ourCommit]);
      })
      .then(function(commitOid) {
        ourBranchShaPreRebase = commitOid.toString();
        assert.equal(ourBranchShaPreRebase,
          "e7f37ee070837052937e24ad8ba66f6d83ae7941");

        return removeFileFromIndex(repository, ourFileName);
      })
      .then(function() {
        return fse.remove(path.join(repository.workdir(), ourFileName));
      })
      .then(function() {
        return repository.checkoutBranch(ourBranchName);
      })
      .then(function() {
        return repository.rebaseBranches(ourBranchName, theirBranchName,
          null, ourSignature, function(rebase) {
            assert.ok(rebase instanceof NodeGit.Rebase);

            nextCalls++;

            return Promise.resolve();
          }, function(rebaseMetadata) {
            calledBeforeFinishFn = true;

            assert.equal(rebaseMetadata.ontoName, theirBranchName);
            assert.equal(rebaseMetadata.ontoSha, theirBranchSha);
            assert.equal(rebaseMetadata.originalHeadName, ourBranchName);
            assert.equal(
              rebaseMetadata.originalHeadSha,
              ourBranchShaPreRebase
            );
            assert.deepEqual(
              rebaseMetadata.rewritten,
              [[ourBranchShaPreRebase, ourBranchShaPostRebase]]
            );
          });
      })
      .then(function(commit) {
        // verify that the beforeNextFn callback was called
        assert.equal(nextCalls, 2);

        // verify that the beforeFinishFn callback was called
        assert(calledBeforeFinishFn, "beforeFinishFn was not called");

        // verify that the "ours" branch has moved to the correct place
        assert.equal(commit.id().toString(), ourBranchShaPostRebase);

        return commit.parent(0);
      })
      .then(function(commit) {
        // verify that we are on top of "their commit"
        assert.equal(commit.id().toString(),
          "e9ebd92f2f4778baf6fa8e92f0c68642f931a554");
      });
  });

  it("beforeFinishFn async callback receives correct rebase data", function() {
    var baseFileName = "baseNewFile.txt";
    var ourFileName = "ourNewFile.txt";
    var theirFileName = "theirNewFile.txt";

    var baseFileContent = "How do you feel about Toll Roads?";
    var ourFileContent = "I like Toll Roads. I have an EZ-Pass!";
    var theirFileContent = "I'm skeptical about Toll Roads";

    var ourSignature = NodeGit.Signature.create
          ("Ron Paul", "RonPaul@TollRoadsRBest.info", 123456789, 60);
    var theirSignature = NodeGit.Signature.create
          ("Greg Abbott", "Gregggg@IllTollYourFace.us", 123456789, 60);

    var repository = this.repository;
    var ourCommit;
    var ourBranch;
    var theirBranch;
    var ourBranchShaPreRebase;
    var ourBranchShaPostRebase = "b937100ee0ea17ef20525306763505a7fe2be29e";
    var theirBranchSha;

    var nextCalls = 0;

    var calledBeforeFinishFn = false;

    return fse.writeFile(path.join(repository.workdir(), baseFileName),
      baseFileContent)
      // Load up the repository index and make our initial commit to HEAD
      .then(function() {
        return RepoUtils.addFileToIndex(repository, baseFileName);
      })
      .then(function(oid) {
        assert.equal(oid.toString(),
          "b5cdc109d437c4541a13fb7509116b5f03d5039a");

        return repository.createCommit("HEAD", ourSignature,
          ourSignature, "initial commit", oid, []);
      })
      .then(function(commitOid) {
        assert.equal(commitOid.toString(),
          "be03abdf0353d05924c53bebeb0e5bb129cda44a");

        return repository.getCommit(commitOid).then(function(commit) {
          ourCommit = commit;
        }).then(function() {
          return repository.createBranch(ourBranchName, commitOid)
            .then(function(branch) {
              ourBranch = branch;
              return repository.createBranch(theirBranchName, commitOid);
            });
        });
      })
      .then(function(branch) {
        theirBranch = branch;
        return fse.writeFile(path.join(repository.workdir(), theirFileName),
          theirFileContent);
      })
      .then(function() {
        return RepoUtils.addFileToIndex(repository, theirFileName);
      })
      .then(function(oid) {
        assert.equal(oid.toString(),
          "be5f0fd38a39a67135ad68921c93cd5c17fefb3d");

        return repository.createCommit(theirBranch.name(), theirSignature,
          theirSignature, "they made a commit", oid, [ourCommit]);
      })
      .then(function(commitOid) {
        theirBranchSha = commitOid.toString();
        assert.equal(theirBranchSha,
          "e9ebd92f2f4778baf6fa8e92f0c68642f931a554");

        return removeFileFromIndex(repository, theirFileName);
      })
      .then(function() {
        return fse.remove(path.join(repository.workdir(), theirFileName));
      })
      .then(function() {
        return fse.writeFile(path.join(repository.workdir(), ourFileName),
          ourFileContent);
      })
      .then(function() {
        return RepoUtils.addFileToIndex(repository, ourFileName);
      })
      .then(function(oid) {
        assert.equal(oid.toString(),
          "77867fc0bfeb3f80ab18a78c8d53aa3a06207047");

          return repository.createCommit(ourBranch.name(), ourSignature,
            ourSignature, "we made a commit", oid, [ourCommit]);
      })
      .then(function(commitOid) {
        ourBranchShaPreRebase = commitOid.toString();
        assert.equal(ourBranchShaPreRebase,
          "e7f37ee070837052937e24ad8ba66f6d83ae7941");

        return removeFileFromIndex(repository, ourFileName);
      })
      .then(function() {
        return fse.remove(path.join(repository.workdir(), ourFileName));
      })
      .then(function() {
        return repository.checkoutBranch(ourBranchName);
      })
      .then(function() {
        return repository.rebaseBranches(ourBranchName, theirBranchName,
          null, ourSignature, function(rebase) {
            assert.ok(rebase instanceof NodeGit.Rebase);

            nextCalls++;

            return Promise.resolve();
          }, function(rebaseMetadata) {
            calledBeforeFinishFn = true;

            assert.equal(rebaseMetadata.ontoName, theirBranchName);
            assert.equal(rebaseMetadata.ontoSha, theirBranchSha);
            assert.equal(rebaseMetadata.originalHeadName, ourBranchName);
            assert.equal(
              rebaseMetadata.originalHeadSha,
              ourBranchShaPreRebase
            );
            assert.deepEqual(
              rebaseMetadata.rewritten,
              [[ourBranchShaPreRebase, ourBranchShaPostRebase]]
            );

            return Promise.resolve();
          });
      })
      .then(function(commit) {
        // verify that the beforeNextFn callback was called
        assert.equal(nextCalls, 2);

        // verify that the beforeFinishFn callback was called
        assert(calledBeforeFinishFn, "beforeFinishFn was not called");

        // verify that the "ours" branch has moved to the correct place
        assert.equal(commit.id().toString(), ourBranchShaPostRebase);

        return commit.parent(0);
      })
      .then(function(commit) {
        // verify that we are on top of "their commit"
        assert.equal(commit.id().toString(),
          "e9ebd92f2f4778baf6fa8e92f0c68642f931a554");
      });
  });

  it("can rebase with conflicts using the convenience methods", function() {
    var fileName = "everyonesFile.txt";

    var baseFileContent = "How do you feel about Toll Roads?\n";
    var ourFileContent = "I like Toll Roads. I have an EZ-Pass!\n";
    var theirFileContent = "I'm skeptical about Toll Roads\n";

    var expectedConflictedFileContent =
      "How do you feel about Toll Roads?\n" +
      "<<<<<<< theirs\n" +
      "I'm skeptical about Toll Roads\n" +
      "=======\n" +
      "I like Toll Roads. I have an EZ-Pass!\n" +
      ">>>>>>> we made a commit\n";

    var conflictSolvedFileContent =
      "How do you feel about Toll Roads?\n" +
      "He's skeptical about Toll Roads,\n" +
      "but I like Toll Roads. I have an EZ-Pass!\n";

    var ourSignature = NodeGit.Signature.create
          ("Ron Paul", "RonPaul@TollRoadsRBest.info", 123456789, 60);
    var theirSignature = NodeGit.Signature.create
          ("Greg Abbott", "Gregggg@IllTollYourFace.us", 123456789, 60);

    var repository = this.repository;
    var ourCommit;
    var ourBranch;
    var theirBranch;
    var nextCalls=0;

    return fse.writeFile(path.join(repository.workdir(), fileName),
      baseFileContent)
      .then(function() {
        return RepoUtils.addFileToIndex(repository, fileName);
      })
      .then(function(oid) {
        assert.equal(oid.toString(),
          "044704f62399fecbe22da6d7d47b14e52625630e");

        return repository.createCommit("HEAD", ourSignature,
          ourSignature, "initial commit", oid, []);
      })
      .then(function(commitOid) {
        assert.equal(commitOid.toString(),
          "80111c46ac73b857a3493b24c81df08639b5de99");

        return repository.getCommit(commitOid).then(function(commit) {
          ourCommit = commit;
        }).then(function() {
          return repository.createBranch(ourBranchName, commitOid)
            .then(function(branch) {
              ourBranch = branch;
              return repository.createBranch(theirBranchName, commitOid);
            });
        });
      })
      .then(function(branch) {
        theirBranch = branch;
        return fse.writeFile(path.join(repository.workdir(), fileName),
          baseFileContent + theirFileContent);
      })
      .then(function() {
        return RepoUtils.addFileToIndex(repository, fileName);
      })
      .then(function(oid) {
        assert.equal(oid.toString(),
          "b826e989aca7647bea64810f0a2a38acbbdd4c1a");

        return repository.createCommit(theirBranch.name(), theirSignature,
          theirSignature, "they made a commit", oid, [ourCommit]);
      })
      .then(function(commitOid) {
        assert.equal(commitOid.toString(),
          "b3c355bb606ec7da87174dfa1a0b0c0e3dc97bc0");

        return fse.writeFile(path.join(repository.workdir(), fileName),
          baseFileContent + ourFileContent);
      })
      .then(function() {
        return RepoUtils.addFileToIndex(repository, fileName);
      })
      .then(function(oid) {
        assert.equal(oid.toString(),
          "e7fe41bf7c0c28766887a63ffe2f03f624276fbe");

          return repository.createCommit(ourBranch.name(), ourSignature,
            ourSignature, "we made a commit", oid, [ourCommit]);
      })
      .then(function(commitOid) {
        assert.equal(commitOid.toString(),
          "28cfeb17f66132edb3c4dacb7ff38e8dd48a1844");

        var opts = {
          checkoutStrategy: NodeGit.Checkout.STRATEGY.FORCE
        };

        return NodeGit.Checkout.head(repository, opts);
      })
      .then(function() {
        return repository.rebaseBranches(ourBranchName, theirBranchName,
          null, ourSignature)
          .then(function(commit) {
            assert.fail(commit, undefined,
              "The index should have been thrown due to merge conflicts");
          })
          .catch(function(index) {
            assert.ok(index);
            assert.ok(index.hasConflicts());

            assert.ok(repository.isRebasing());
          });
      })
      .then(function() {
        return fse.readFile(path.join(repository.workdir(), fileName), "utf8")
          .then(function(fileContent) {
            assert.equal(fileContent, expectedConflictedFileContent);

            return fse.writeFile(path.join(repository.workdir(), fileName),
              conflictSolvedFileContent);
          });
      })
      .then(function() {
        return RepoUtils.addFileToIndex(repository, fileName);
      })
      .then(function(oid) {
        return repository.refreshIndex()
          .then(function(index) {
            assert.ok(!index.hasConflicts());

            return repository.continueRebase(ourSignature, function(rebase) {
              assert.ok(rebase instanceof NodeGit.Rebase);

              nextCalls++;

              return Promise.resolve();
            });
          });
      })
      .then(function(commit) {
        // verify that the beforeNextFn callback was called
        assert.equal(nextCalls, 1);

        // verify that the "ours" branch has moved to the correct place
        assert.equal(commit.id().toString(),
          "ef6d0e95167435b3d58f51ab165948c72f6f94b6");

        assert.ok(!repository.isRebasing());
        assert.ok(repository.isDefaultState());

        return commit.parent(0);
      })
      .then(function(commit) {
        // verify that we are on top of "their commit"
        assert.equal(commit.id().toString(),
          "b3c355bb606ec7da87174dfa1a0b0c0e3dc97bc0");
      });
  });
});
