RSpec matcher to compare two file, using their MD5 hashes

be_same_file_as.rb

RSpec::Matchers.define(:be_same_file_as) do |exected_file_path|
  match do |actual_file_path|
    expect(md5_hash(actual_file_path)).to eq(md5_hash(expected_file_path))
  end
  
  def md5_hash(file_path)
    Digest::MD5.hexdigest(File.read(file_path))    
  end
end

# e.g. path_to_foo.should be_same_file_as(path_to_bar)

Looks great! @mattwyne, where do you usually put custom matcher files under spec folder? Is it support, shared_matchers subfolder or some other folder?

I ran across this on Google and it helped me tremendously. You rule.

👍

A very small revision to avoid a depreation warning :
line 3:

expect(md5_hash(actual_file_path)).to eq(md5_hash(exected_file_path))

Wow, amazing that this is still useful after 10 years! I've revised the original with your edits, thanks @thomasdarde!

Even more amazing is your reactivity after 10 years 👍

Just one small additional correction -- a typo in expected_file_path.

Just one small additional correction -- a typo in expected_file_path.

How did it take 10 years for someone to spot this!? 😀🙈

Fixed.

Ah, of course this code needing correction was not 10 years old 🤦

Just one small additional correction -- a typo in expected_file_path.

You have the same typo on line 1 😅