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module SchemaPlus::Matchers
class HaveIndex
def initialize(expectation, options = {})
set_required_columns(expectation)
@unique = options.delete(:unique)
@name = options.delete(:name)
end
def matches?(model)
@too_many = nil
@model = model
indexes = @model.indexes.select { |index| index.columns.to_set == @required_columns }
if indexes.length > 1
@too_many = indexes.length
return false
end
index = indexes.first
return index && (@unique ? index.unique : true) && (@name ? index.name == @name.to_s : true)
end
def failure_message(should_not = false)
invert = should_not ? "not to" : "to"
what = ""
what += "unique " if @unique
what += "named '{@name}'" if @name
msg = "Expected #{@model.table_name} #{invert} contain one #{what}index on #{@required_columns.entries.inspect}"
msg += "; found #{@too_many} indexes" if @too_many
msg
end
def failure_message_when_negated
failure_message(true)
end
def on(expectation)
set_required_columns(expectation)
self
end
private
def set_required_columns(expectation)
@required_columns = Array(expectation).collect(&:to_s).to_set
end
end
def have_index(*expectation)
options = expectation.extract_options!
HaveIndex.new(expectation, options)
end
def have_unique_index(*expectation)
options = expectation.extract_options!
options[:unique] = true
HaveIndex.new(expectation, options)
end
end
Version data entries
19 entries across 19 versions & 2 rubygems