138 lines
3.8 KiB
Ruby
138 lines
3.8 KiB
Ruby
module Shoulda # :nodoc:
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module Matchers
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module ActiveModel # :nodoc:
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# Ensures that the attribute can be set to the given value or values. If
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# multiple values are given the match succeeds only if all given values
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# are allowed. Otherwise, the matcher fails at the first bad value in the
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# argument list (the remaining arguments are not processed then).
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#
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# Options:
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# * <tt>with_message</tt> - value the test expects to find in
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# <tt>errors.on(:attribute)</tt>. Regexp or string. If omitted,
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# the test looks for any errors in <tt>errors.on(:attribute)</tt>.
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#
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# Example:
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# it { should_not allow_value('bad').for(:isbn) }
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# it { should allow_value("isbn 1 2345 6789 0").for(:isbn) }
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#
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def allow_value(*values)
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if values.empty?
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raise ArgumentError, "need at least one argument"
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else
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AllowValueMatcher.new(*values)
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end
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end
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class AllowValueMatcher # :nodoc:
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include Helpers
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def initialize(*values)
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@values_to_match = values
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end
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def for(attribute)
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@attribute = attribute
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self
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end
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def with_message(message)
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@expected_message = message
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self
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end
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def matches?(instance)
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@instance = instance
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@values_to_match.all? do |value|
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@value = value
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@instance.send("#{@attribute}=", @value)
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! errors_match?
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end
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end
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def failure_message
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"Did not expect #{expectation}, got error: #{@matched_error}"
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end
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def negative_failure_message
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"Expected #{expectation}, got #{error_description}"
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end
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def description
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"allow #{@attribute} to be set to #{allowed_values}"
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end
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private
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def errors_match?
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if @instance.valid?
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false
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else
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if expected_message
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errors_match_regexp? || errors_match_string?
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else
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errors_for_attribute.compact.any?
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end
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end
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end
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def errors_for_attribute
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if @instance.errors.respond_to?(:[])
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errors = @instance.errors[@attribute]
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else
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errors = @instance.errors.on(@attribute)
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end
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Array.wrap(errors)
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end
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def errors_match_regexp?
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if Regexp === expected_message
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@matched_error = errors_for_attribute.detect { |e| e =~ expected_message }
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end
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end
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def errors_match_string?
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if errors_for_attribute.include?(expected_message)
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@matched_error = expected_message
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end
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end
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def expectation
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includes_expected_message = expected_message ? "to include #{expected_message.inspect}" : ''
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["errors", includes_expected_message, "when #{@attribute} is set to #{@value.inspect}"].join(' ')
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end
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def error_description
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if @instance.errors.empty?
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"no errors"
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else
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"errors: #{pretty_error_messages(@instance)}"
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end
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end
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def allowed_values
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if @values_to_match.length > 1
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"any of [#{@values_to_match.map(&:inspect).join(', ')}]"
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else
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@values_to_match.first.inspect
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end
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end
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def expected_message
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if @expected_message
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if Symbol === @expected_message
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default_error_message(@expected_message, :model_name => model_name, :attribute => @attribute)
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else
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@expected_message
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end
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end
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end
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def model_name
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@instance.class.to_s.underscore
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end
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end
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end
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end
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end
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