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Programming language: Crystal
License: MIT License
Tags: Testing    
Latest version: v0.1.0

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README

Matchi

Build Status

Collection of expectation matchers for Crystal.

Contact

Installation

Add this to your application's shard.yml:

dependencies:
  matchi:
    github: fixcr/matchi

Usage

require "matchi"

Built-in matchers

Untruth matcher:

be_false = Matchi::BeFalse.new
be_false.matches? { false } # => true

Nil matcher:

be_nil = Matchi::BeNil.new
be_nil.matches? { nil } # => true

Truth matcher:

be_true = Matchi::BeTrue.new
be_true.matches? { true } # => true

Regular expressions matcher:

match = Matchi::Match.new(/^[a-z0-9_-]{3,16}$/)
match.matches? { "bob" } # => true

Expecting errors matcher:

raise_exception = Matchi::RaiseException.new(DivisionByZero)
raise_exception.matches? { 0 / 0 } # => true

Equivalence matcher:

same = Matchi::Same.new("foo")
same.matches? { "foo" } # => true

Custom matchers

Custom matchers can easily be defined for expressing expectations.

Be the answer matcher:

module Matchi
  class BeTheAnswer
    def matches?
      42 === yield
    end
  end
end

be_the_answer = Matchi::BeTheAnswer.new
be_the_answer.matches? { 42 } # => true

Start with matcher:

module Matchi
  class StartWith
    def initialize(expected)
      @expected = expected
    end

    def matches?
      !Regex.new("^#{@expected}").match(yield).nil?
    end
  end
end

start_with = Matchi::StartWith.new("foo")
start_with.matches? { "foobar" } # => true

Versioning

Matchi follows Semantic Versioning 2.0.

Contributing

  1. Fork it
  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

License

See LICENSE.md file.


*Note that all licence references and agreements mentioned in the matchi README section above are relevant to that project's source code only.