Module: MiniTest::Unit::Unordered

Included in:
TestCase
Defined in:
lib/minitest/unordered.rb

Constant Summary collapse

VERSION = 
"1.0.0"

Instance Method Summary collapse

Instance Method Details

#assert_equal_unordered(a, b, msg = nil) ⇒ Object

Fails unless a contains the same contents as b, regardless of order.

assert_equal_unordered %w[a a b c], %w[a b c a] # pass

NOTE: This uses Hash#== to determine collection equivalence, as such, do not expect it to behave the same as assert_equal.

assert_equal [1], [1.0]                         # pass
assert_equal({ 1 => true }, { 1.0 => true })    # fail
assert_equal_unordered [1], [1.0]               # fail



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# File 'lib/minitest/unordered.rb', line 20

def assert_equal_unordered a, b, msg = nil
  msg = message(msg) {
    "Expected #{mu_pp a} to be equivalent to #{mu_pp b}"
  }

  assert_kind_of Enumerable, a
  assert_kind_of Enumerable, b

  c = Hash.new { |h,k| h[k] = 0 }; a.each do |e| c[e] += 1 end
  d = Hash.new { |h,k| h[k] = 0 }; b.each do |e| d[e] += 1 end

  assert c == d, msg
end