65 lines
1.6 KiB
Ruby
65 lines
1.6 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 model is not valid if the given attribute is not
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# present.
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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>. <tt>Regexp</tt> or <tt>String</tt>.
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# Defaults to the translation for <tt>:blank</tt>.
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#
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# Examples:
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# it { should validate_presence_of(:name) }
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# it { should validate_presence_of(:name).
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# with_message(/is not optional/) }
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#
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def validate_presence_of(attr)
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ValidatePresenceOfMatcher.new(attr)
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end
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class ValidatePresenceOfMatcher < ValidationMatcher # :nodoc:
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def with_message(message)
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@expected_message = message if message
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self
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end
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def matches?(subject)
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super(subject)
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@expected_message ||= :blank
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disallows_value_of(blank_value, @expected_message)
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end
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def description
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"require #{@attribute} to be set"
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end
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private
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def blank_value
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if collection?
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[]
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else
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nil
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end
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end
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def collection?
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if reflection
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[:has_many, :has_and_belongs_to_many].include?(reflection.macro)
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else
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false
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end
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end
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def reflection
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@subject.class.respond_to?(:reflect_on_association) &&
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@subject.class.reflect_on_association(@attribute)
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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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