DirExists returns true if a directory exists at the given path.

EnsurePumaDevDirectory creates ~/.puma-dev if it does not already exist.

FileExists returns true if a regular file exists at the given path.

LogDebugf prints a formatted log message if DEBUG_LOG=1.

MakeDirectoryOrFail makes a directory or fails the test, returning the path of the directory that was created.

RemoveAppSymlinkOrFail deletes a symlink at ~/.puma-dev/{name} or fails the test.

RemoveDirectoryOrFail removes a directory (and its contents) or fails the test.

SetFlagOrFail sets the value of a flag or fails the given testing.T.

StubCommandLineArgs overrides command arguments to allow flag-based branches to execute.

WithStdoutCaptured executes the passed function and returns a string containing the stdout of the executed function.

WithWorkingDirectory executes the passed function within the context of the passed working directory path.