Class: Backspin::Matcher

Inherits:
Object
  • Object
show all
Defined in:
lib/backspin/matcher.rb

Overview

Handles matching logic between recorded and actual commands

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(config:, recorded_command:, actual_command:) ⇒ Matcher

Returns a new instance of Matcher.



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# File 'lib/backspin/matcher.rb', line 8

def initialize(config:, recorded_command:, actual_command:)
  @config = normalize_config(config)
  @recorded_command = recorded_command
  @actual_command = actual_command
end

Instance Attribute Details

#actual_command ⇒ Object (readonly)

Returns the value of attribute actual_command.



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# File 'lib/backspin/matcher.rb', line 6

def actual_command
  @actual_command
end

#config ⇒ Object (readonly)

Returns the value of attribute config.



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# File 'lib/backspin/matcher.rb', line 6

def config
  @config
end

#recorded_command ⇒ Object (readonly)

Returns the value of attribute recorded_command.



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# File 'lib/backspin/matcher.rb', line 6

def recorded_command
  @recorded_command
end

Instance Method Details

#failure_reason ⇒ String

Returns reason why matching failed.

Returns:

  • (String) —

    reason why matching failed



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# File 'lib/backspin/matcher.rb', line 29

def failure_reason
  reasons = []

  if config.nil?
    # Default matcher checks all fields
    recorded_hash = recorded_command.to_h
    actual_hash = actual_command.to_h

    reasons << "stdout differs" if recorded_hash["stdout"] != actual_hash["stdout"]
    reasons << "stderr differs" if recorded_hash["stderr"] != actual_hash["stderr"]
    reasons << "exit status differs" if recorded_hash["status"] != actual_hash["status"]
  elsif config.is_a?(Hash)
    recorded_hash = recorded_command.to_h
    actual_hash = actual_command.to_h

    # Only check matchers that were provided
    config.each do |field, matcher_proc|
      case field
      when :all
        reasons << ":all matcher failed" unless matcher_proc.call(recorded_hash, actual_hash)
      when :stdout, :stderr, :status
        unless matcher_proc.call(recorded_hash[field.to_s], actual_hash[field.to_s])
          reasons << "#{field} custom matcher failed"
        end
      end
    end
  else
    # Proc matcher
    reasons << "custom matcher failed"
  end

  reasons.join(", ")
end

#match? ⇒ Boolean

Returns true if commands match according to the configured matcher.

Returns:

  • (Boolean) —

    true if commands match according to the configured matcher



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# File 'lib/backspin/matcher.rb', line 15

def match?
  if config.nil?
    # Default behavior: check all fields for equality
    default_matcher.call(recorded_command.to_h, actual_command.to_h)
  elsif config.is_a?(Proc)
    config.call(recorded_command.to_h, actual_command.to_h)
  elsif config.is_a?(Hash)
    verify_with_hash_matcher
  else
    raise ArgumentError, "Invalid matcher type: #{config.class}"
  end
end