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require 'test/unit'
class TestCase < Test::Unit::TestCase
def test_case_with_no_expression
x = nil
case
when true
x = 1
when false
x = 2
end
assert_equal(1, x)
x = nil
case
when false
x = 1
when true
x = 2
end
assert_equal(2, x)
end
def test_case_with_ranges
x = nil
case 10
when 1..3
x = 'a'
when 4..8
x = 'b'
when 9..22
x = 'c'
else
x = 'd'
end
assert_equal('c', x)
end
def test_case_with_else
x = nil
case 10
when 1
x = 'a'
when 100
x = 'b'
else
x = 'c'
end
assert_equal('c', x)
end
def test_case_no_match_returns_nil
x = case nil
when String then "HEH1"
end
assert_equal(nil, x)
x = case "FOO"
when Proc then "HEH1"
end
assert_equal(nil, x)
end
def test_case_return_value
x = case "HEH"
when Proc then "BAD"
else "GOOD"
end
assert_equal("GOOD", x)
end
def test_case_when_splats_single
assert_nothing_raised {
case 1
when *1
end
}
end
end
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