67 lines
1.9 KiB
Ruby
Vendored
67 lines
1.9 KiB
Ruby
Vendored
assert('Object#instance_exec') do
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class KlassWithSecret
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def initialize
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@secret = 99
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end
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end
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k = KlassWithSecret.new
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assert_equal 104, k.instance_exec(5) {|x| @secret+x }
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end
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assert('Object#tap') do
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ret = []
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(1..10) .tap {|x| ret << "original: #{x.inspect}"}
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.to_a .tap {|x| ret << "array: #{x.inspect}"}
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.select {|x| x%2==0} .tap {|x| ret << "evens: #{x.inspect}"}
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.map { |x| x*x } .tap {|x| ret << "squares: #{x.inspect}"}
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assert_equal [
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"original: 1..10",
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"array: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]",
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"evens: [2, 4, 6, 8, 10]",
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"squares: [4, 16, 36, 64, 100]"
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], ret
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assert_equal(:tap_ok, Class.new {def m; tap{return :tap_ok}; end}.new.m)
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end
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assert('instance_exec on primitives with class and module definition') do
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begin
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class A
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1.instance_exec do
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class B
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end
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end
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end
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assert_kind_of Class, A::B
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ensure
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Object.__send__(:remove_const,:A)
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end
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begin
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class A
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1.instance_exec do
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module B
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end
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end
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end
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assert_kind_of Module, A::B
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ensure
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Object.__send__(:remove_const,:A)
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end
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end
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assert('argument forwarding via instance_exec') do
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assert_equal [[], {}, nil], instance_exec { |*args, **kw, &blk| [args, kw, blk] }
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assert_equal [[1, 2, 3], {}, nil], instance_exec(1, 2, 3) { |*args, **kw, &blk| [args, kw, blk] }
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assert_equal [[], { a: 1 }, nil], instance_exec(a: 1) { |*args, **kw, &blk| [args, kw, blk] }
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end
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assert('argument forwarding via instance_exec from c') do
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assert_equal [[], {}, nil], instance_exec_from_c { |*args, **kw, &blk| [args, kw, blk] }
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assert_equal [[1, 2, 3], {}, nil], instance_exec_from_c(1, 2, 3) { |*args, **kw, &blk| [args, kw, blk] }
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# currently there is no easy way to call a method from C passing keyword arguments
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#assert_equal [[], { a: 1 }, nil], instance_exec_from_c(a: 1) { |*args, **kw, &blk| [args, kw, blk] }
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end
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