This script identifies changed spec files in a Git repository and runs RSpec tests on them.

rspec_diff_vs_master.zsh

#!/bin/zsh

# Step 1: Get the list of changed files
changed_files=$(git diff --name-only master)

# Step 2: Initialize an array for spec files
spec_files=()

# Step 3: Populate the array with spec files
while IFS= read -r file; do
    spec_files+=("$file")
done < <(echo "$changed_files" | grep -E '_spec\.rb$' | grep -E '^spec/')

# Step 4: Run RSpec on the filtered spec files
bin/rspec "${spec_files[@]}"