115 lines
3.1 KiB
Ruby
115 lines
3.1 KiB
Ruby
module Shoulda # :nodoc:
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module Matchers
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module ActiveRecord # :nodoc:
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# Ensure that the field becomes serialized.
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#
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# Options:
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# * <tt>:as</tt> - tests that the serialized attribute makes use of the class_name option.
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#
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# Example:
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# it { should serialize(:details) }
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# it { should serialize(:details).as(Hash) }
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# it { should serialize(:details).as_instance_of(ExampleSerializer) }
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#
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def serialize(name)
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SerializeMatcher.new(name)
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end
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class SerializeMatcher # :nodoc:
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def initialize(name)
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@name = name.to_s
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@options = {}
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end
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def as(type)
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@options[:type] = type
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self
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end
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def as_instance_of(type)
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@options[:instance_type] = type
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self
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end
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def matches?(subject)
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@subject = subject
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serialization_valid? && type_valid?
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end
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def failure_message
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"Expected #{expectation} (#{@missing})"
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end
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alias failure_message_for_should failure_message
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def failure_message_when_negated
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"Did not expect #{expectation}"
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end
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alias failure_message_for_should_not failure_message_when_negated
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def description
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description = "serialize :#{@name}"
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description += " class_name => #{@options[:type]}" if @options.key?(:type)
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description
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end
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protected
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def serialization_valid?
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if model_class.serialized_attributes.keys.include?(@name)
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true
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else
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@missing = "no serialized attribute called :#{@name}"
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false
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end
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end
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def class_valid?
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if @options[:type]
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klass = model_class.serialized_attributes[@name]
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if klass == @options[:type]
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true
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else
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if klass.respond_to?(:object_class) && klass.object_class == @options[:type]
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true
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else
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@missing = ":#{@name} should be a type of #{@options[:type]}"
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false
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end
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end
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else
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true
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end
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end
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def model_class
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@subject.class
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end
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def instance_class_valid?
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if @options.key?(:instance_type)
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if model_class.serialized_attributes[@name].class == @options[:instance_type]
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true
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else
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@missing = ":#{@name} should be an instance of #{@options[:type]}"
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false
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end
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else
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true
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end
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end
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def type_valid?
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class_valid? && instance_class_valid?
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end
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def expectation
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expectation = "#{model_class.name} to serialize the attribute called :#{@name}"
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expectation += " with a type of #{@options[:type]}" if @options[:type]
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expectation += " with an instance of #{@options[:instance_type]}" if @options[:instance_type]
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expectation
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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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