Re: [PATCH v3 2/7] test-reach: add run_three_modes method

> From: Derrick Stolee <dstolee@microsoft.com>
> 
> The 'test_three_modes' method assumes we are using the 'test-tool
> reach' command for our test. However, we may want to use the data
> shape of our commit graph and the three modes (no commit-graph,
> full commit-graph, partial commit-graph) for other git commands.
> 
> Split test_three_modes to be a simple translation on a more general
> run_three_modes method that executes the given command and tests
> the actual output to the expected output.
>
> [...]
> +test_three_modes () {
> +	run_three_modes test-tool reach "$@"
> +}