### Creating commits and writing commit messages

The commit messages that accompany your code changes are an important piece of documentation. Please follow these guidelines when creating commits:

* [Write good commit messages.](https://cbea.ms/git-commit/#seven-rules)

}

// ErrNoCommits is an error equivalent to fs.ErrNotExist indicating that a given
// repository or module contains no commits.
var ErrNoCommits error = noCommitsError{}

type noCommitsError struct{}

func (noCommitsError) Error() string {
	return "no commits"
}
func (noCommitsError) Is(err error) bool {
	return err == fs.ErrNotExist
}

}

// readDiskStatByHash is a fallback for readDiskStat for the case
// where rev is a commit hash instead of a proper semantic version.
// In that case, we look for a cached pseudo-version that matches
// the commit hash. If we find one, we use it.
// This matters most for converting legacy package management
// configs, when we are often looking up commits by full hash.
// Without this check we'd be doing network I/O to the remote repo

	user := User{Name: "transaction"}
	if err := tx.Save(&user).Error; err != nil {
		t.Fatalf("No error should raise")
	}

	if err := tx.Commit().Error; err != nil {
		t.Fatalf("Commit should not raise error")
	}

	if err := tx.Rollback().Error; err == nil {
		t.Fatalf("Rollback after commit should raise error")
	}
}

func TestTransactionWithSavePoint(t *testing.T) {
	tx := DB.Begin()

ven-plugin-api jira http://jira.codehaus.org/browse/MNG continuum commits@maven.apache.org Maven User List ******@****.*** ******@****.*** ******@****.*** http://mail-archives.apache.org/mod_mbox/maven-users Maven Developer List ******@****.*** ******@****.*** ******@****.*** http://mail-archives.apache.org/mod_mbox/maven-dev Maven Commits List commits******@****.*** ******@****.*** c...

) {
    per_commit(
        displayName = "Performance Regression Test",
        timeout = 420,
        channel = "commits"
    ),
    per_day(
        displayName = "Slow Performance Regression Test",
        timeout = 420,
        channel = "commits"
    ),
    per_week(
        displayName = "Performance Experiment",
        timeout = 420,
        channel = "experiments"
    ),

	for _, line := range strings.Split(out, "\n") {
		if line == "" || line[0] == ' ' || line[0] == '\t' {
			// End of header, start of commit message.
			break
		}
		if line[0] == '-' {
			continue
		}
		before, after, found := strings.Cut(line, ":")
		if !found {
			// End of header, start of commit message.
			break
		}
		key, val := before, strings.TrimSpace(after)
		switch key {
		case "revno":

// r.modPath and encodes a base version and commit metadata that agrees with
// info.
//
// Note that verifying a nontrivial base version in particular may be somewhat
// expensive: in order to do so, r.code.DescendsFrom will need to fetch at least
// enough of the commit history to find a path between version and its base.

		isBigEndian && !root.Block.Func.Config.BigEndian
	if needSwap && (size != 1 || !root.Block.Func.Config.haveByteSwap(n)) {
		return false
	}

	// This is the commit point.

	// First, issue load at lowest address.
	v = loadBlock.NewValue2(pos, OpLoad, sizeType(n*size), r[0].load.Args[0], mem)

	// Byte swap if needed,
	if needSwap {
		v = byteSwap(loadBlock, pos, v)

                   though we don't run Error Prone itself, which no longer
                   supports JDK8!).

                   Why? At some point, presumably after
                   https://github.com/google/guava/commit/e06a8cec65815599e510d7f9c1ea9d2a8eaa438a,
                   builds with JDK8 began failing animal-sniffer with the error:

                   Failed to check signatures: Bad class file .../CollectionFuture$ListFuture.class