Test #maximum and #minimum with empty enumerable
Follow-up to #41404. These tests will prevent regressions if we decide to change the implementations of `maximum` or `minimum` in the future (for example, calling `max_by` or `min_by` followed by `send`).
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@ -34,11 +34,21 @@ class EnumerableTests < ActiveSupport::TestCase
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assert_equal 5, payments.minimum(:price)
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end
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def test_minimum_with_empty_enumerable
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payments = GenericEnumerable.new([])
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assert_nil payments.minimum(:price)
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end
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def test_maximum
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payments = GenericEnumerable.new([ Payment.new(5), Payment.new(15), Payment.new(10) ])
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assert_equal 15, payments.maximum(:price)
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end
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def test_maximum_with_empty_enumerable
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payments = GenericEnumerable.new([])
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assert_nil payments.maximum(:price)
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end
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def test_sums
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enum = GenericEnumerable.new([5, 15, 10])
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assert_equal 30, enum.sum
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