/
hash_helper.rb
47 lines (42 loc) · 1.22 KB
/
hash_helper.rb
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require_relative '../base_classes/base_class'
class HashHelper < BaseClass
Contract Hash, Hash => HashOf[Symbol => Hash]
# Compare two hashes.
# Returns a hash with keys +:ok+, +:missing+, +:unexpected+, +:changed+.
def self.compare(expected, actual)
result = {
:missing => {},
:unexpected => {},
:changed => {},
:ok => {},
}
expected.each_pair do |key_expected, value_expected|
if actual.include?(key_expected)
value_actual = actual[key_expected]
if value_actual == value_expected
result[:ok][key_expected] = value_expected
else
result[:changed][key_expected] = {:expected => value_expected, :actual => value_actual}
end
else
result[:missing][key_expected] = value_expected
end
end
actual.each_pair do |key_actual, value_actual|
next if expected.include?(key_actual)
result[:unexpected][key_actual] = value_actual
end
result
end
Contract Hash => Hash
def self.rehash_to_symbol_keys(hash)
rehash = {}
hash.each_pair do |k, v|
if v.respond_to?(:each_pair)
v = self.rehash_to_symbol_keys(v)
end
rehash.store(k.to_sym, v)
end
rehash
end
end