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##
# Proc ISO Test
assert('Proc', '15.2.17') do
assert_equal Class, Proc.class
end
assert('Proc superclass', '15.2.17.2') do
assert_equal Object, Proc.superclass
end
assert('Proc.new', '15.2.17.3.1') do
assert_raise ArgumentError do
Proc.new
end
assert_equal (Proc.new {}).class, Proc
end
assert('Proc#[]', '15.2.17.4.1') do
a = 0
b = Proc.new { a += 1 }
b.[]
a2 = 0
b2 = Proc.new { |i| a2 += i }
b2.[](5)
assert_equal a, 1
assert_equal a2, 5
end
assert('Proc#arity', '15.2.17.4.2') do
a = Proc.new {|x, y|}.arity
b = Proc.new {|x, *y, z|}.arity
c = Proc.new {|x=0, y|}.arity
d = Proc.new {|(x, y), z=0|}.arity
assert_equal 2, a
assert_equal(-3, b)
assert_equal 1, c
assert_equal 1, d
end
assert('Proc#call', '15.2.17.4.3') do
a = 0
b = Proc.new { a += 1 }
b.call
a2 = 0
b2 = Proc.new { |i| a2 += i }
b2.call(5)
assert_equal 1, a
assert_equal 5, a2
end
assert('Proc#call proc args pos block') do
pr = Proc.new {|a,b,&c|
[a, b, c.class, c&&c.call(:x)]
}
assert_equal [nil, nil, Proc, :proc], (pr.call(){ :proc })
assert_equal [1, nil, Proc, :proc], (pr.call(1){ :proc })
assert_equal [1, 2, Proc, :proc], (pr.call(1, 2){ :proc })
assert_equal [1, 2, Proc, :proc], (pr.call(1, 2, 3){ :proc })
assert_equal [1, 2, Proc, :proc], (pr.call(1, 2, 3, 4){ :proc })
assert_equal [nil, nil, Proc, :x], (pr.call(){|x| x})
assert_equal [1, nil, Proc, :x], (pr.call(1){|x| x})
assert_equal [1, 2, Proc, :x], (pr.call(1, 2){|x| x})
assert_equal [1, 2, Proc, :x], (pr.call(1, 2, 3){|x| x})
assert_equal [1, 2, Proc, :x], (pr.call(1, 2, 3, 4){|x| x})
end
assert('Proc#return_does_not_break_self') do
class TestClass
attr_accessor :block
def initialize
end
def return_array
@block = Proc.new { self }
return []
end
def return_instance_variable
@block = Proc.new { self }
return @block
end
def return_const_fixnum
@block = Proc.new { self }
return 123
end
def return_nil
@block = Proc.new { self }
return nil
end
end
c = TestClass.new
assert_equal [], c.return_array
assert_equal c, c.block.call
c.return_instance_variable
assert_equal c, c.block.call
assert_equal 123, c.return_const_fixnum
assert_equal c, c.block.call
assert_equal nil, c.return_nil
assert_equal c, c.block.call
end
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