Interactively selects Git branches, runs a target R script in an isolated environment for each branch, and compares the execution times to identify performance regressions or improvements across different versions of the codebase.
Value
A data frame containing the benchmark results, including the branch name, execution time in seconds, and the execution status (Success/Failed).
Details
The function performs the following workflow:
Verifies that the current directory is a Git repository.
Extracts available branches and allows the user to select specific ones or benchmark all.
Prompts for the path to the R script to be benchmarked.
Stashes any uncommitted changes to ensure a clean state.
Iterates through the selected branches, checking each one out and executing the target script within a fresh environment
new.env().Restores the original branch and pops the stash to return the workspace to its initial state.
Warning
This function modifies files on disk or the global environment. Please ensure you have a backup or are using version control (e.g., Git) before execution.
Examples
if (interactive()) {
benchmark_branches()
}