assert-diff

Assert equals with readable diff report.

Installation

1. Add the dependency to your shard.yml:

   development_dependencies:
     assert-diff:
       github: YusukeHosonuma/assert-diff
       branch: main

2. Run shards install

Example

Use in specs:

require "assert-diff"
describe "README.md" do
  it "example" do
    expected = Rectangle.new(Point.new(0, 1), 4, 7, "One\nTwo\nThree\nFour")
    actual = Rectangle.new(Point.new(0, 0), 4, 3, "Zero\nOne\nTwo!!\nThree")
    actual.should eq_diff expected # or use `eq_full_diff`
  end
end

or use assert_diff and assert_diff_full.

assert_diff(before, after)
assert_diff_full(before, after)

Use to output:

print_diff(before, after)
print_diff_full(before, after)

Contributing

I don’t think it can be used for edge cases.
Issues and PRs are welcome.

1. Fork it (https://github.com/YusukeHosonuma/assert-diff/fork)
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create a new Pull Request

Contributors

• Yusuke Hosonuma - creator and maintainer