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require 'test/unit'
class TestRubyYield < Test::Unit::TestCase
def test_ary_each
ary = [1]
ary.each {|a, b, c, d| assert_equal [1,nil,nil,nil], [a,b,c,d] }
ary.each {|a, b, c| assert_equal [1,nil,nil], [a,b,c] }
ary.each {|a, b| assert_equal [1,nil], [a,b] }
ary.each {|a| assert_equal 1, a }
end
def test_hash_each
h = {:a => 1}
h.each do |k, v|
assert_equal :a, k
assert_equal 1, v
end
h.each do |kv|
assert_equal [:a, 1], kv
end
end
def test_yield_0
assert_equal 1, iter0 { 1 }
assert_equal 2, iter0 { 2 }
end
def iter0
yield
end
def test_yield_1
iter1([]) {|a, b| assert_equal [nil,nil], [a, b] }
iter1([1]) {|a, b| assert_equal [1,nil], [a, b] }
iter1([1, 2]) {|a, b| assert_equal [1,2], [a,b] }
iter1([1, 2, 3]) {|a, b| assert_equal [1,2], [a,b] }
iter1([]) {|a| assert_equal [], a }
iter1([1]) {|a| assert_equal [1], a }
iter1([1, 2]) {|a| assert_equal [1,2], a }
iter1([1, 2, 3]) {|a| assert_equal [1,2,3], a }
end
def iter1(args)
yield args
end
def test_yield2
def iter2_1() yield 1, *[2, 3] end
iter2_1 {|a, b, c| assert_equal [1,2,3], [a,b,c] }
def iter2_2() yield 1, *[] end
iter2_2 {|a, b, c| assert_equal [1,nil,nil], [a,b,c] }
def iter2_3() yield 1, *[2] end
iter2_3 {|a, b, c| assert_equal [1,2,nil], [a,b,c] }
end
def test_yield_nested
[[1, [2, 3]]].each {|a, (b, c)|
assert_equal [1,2,3], [a,b,c]
}
[[1, [2, 3]]].map {|a, (b, c)|
assert_equal [1,2,3], [a,b,c]
}
end
end
require 'sentgen'
class TestRubyYieldGen < Test::Unit::TestCase
Syntax = {
:exp => [["0"],
["nil"],
["false"],
["[]"],
["[",:exps,"]"]],
:exps => [[:exp],
[:exp,",",:exps]],
:opt_block_param => [[],
[:block_param_def]],
:block_param_def => [['|', '|'],
['|', :block_param, '|']],
:block_param => [[:f_arg, ",", :f_rest_arg, :opt_f_block_arg],
[:f_arg, ","],
[:f_arg, ',', :f_rest_arg, ",", :f_arg, :opt_f_block_arg],
[:f_arg, :opt_f_block_arg],
[:f_rest_arg, :opt_f_block_arg],
[:f_rest_arg, ',', :f_arg, :opt_f_block_arg],
[:f_block_arg]],
:f_arg => [[:f_arg_item],
[:f_arg, ',', :f_arg_item]],
:f_rest_arg => [['*', "var"],
['*']],
:opt_f_block_arg => [[',', :f_block_arg],
[]],
:f_block_arg => [['&', 'var']],
:f_arg_item => [[:f_norm_arg],
['(', :f_margs, ')']],
:f_margs => [[:f_marg_list],
[:f_marg_list, ',', '*', :f_norm_arg],
[:f_marg_list, ',', '*', :f_norm_arg, ',', :f_marg_list],
[:f_marg_list, ',', '*'],
[:f_marg_list, ',', '*', ',', :f_marg_list],
[ '*', :f_norm_arg],
[ '*', :f_norm_arg, ',', :f_marg_list],
[ '*'],
[ '*', ',', :f_marg_list]],
:f_marg_list => [[:f_marg],
[:f_marg_list, ',', :f_marg]],
:f_marg => [[:f_norm_arg],
['(', :f_margs, ')']],
:f_norm_arg => [['var']],
:command_args => [[:open_args]],
:open_args => [[' ',:call_args],
['(', ')'],
['(', :call_args2, ')']],
:call_args => [[:command],
[ :args, :opt_block_arg],
[ :assocs, :opt_block_arg],
[ :args, ',', :assocs, :opt_block_arg],
[ :block_arg]],
:call_args2 => [[:arg, ',', :args, :opt_block_arg],
[:arg, ',', :block_arg],
[ :assocs, :opt_block_arg],
[:arg, ',', :assocs, :opt_block_arg],
[:arg, ',', :args, ',', :assocs, :opt_block_arg],
[ :block_arg]],
:command_args_noblock => [[:open_args_noblock]],
:open_args_noblock => [[' ',:call_args_noblock],
['(', ')'],
['(', :call_args2_noblock, ')']],
:call_args_noblock => [[:command],
[ :args],
[ :assocs],
[ :args, ',', :assocs]],
:call_args2_noblock => [[:arg, ',', :args],
[ :assocs],
[:arg, ',', :assocs],
[:arg, ',', :args, ',', :assocs]],
:command => [],
:args => [[:arg],
["*",:arg],
[:args,",",:arg],
[:args,",","*",:arg]],
:arg => [[:exp]],
:assocs => [[:assoc],
[:assocs, ',', :assoc]],
:assoc => [[:arg, '=>', :arg],
['label', ':', :arg]],
:opt_block_arg => [[',', :block_arg],
[]],
:block_arg => [['&', :arg]],
#:test => [['def m() yield', :command_args_noblock, ' end; r = m {', :block_param_def, 'vars', '}; undef m; r']]
:test => [['def m(&b) b.yield', :command_args_noblock, ' end; r = m {', :block_param_def, 'vars', '}; undef m; r']]
}
def rename_var(obj)
vars = []
r = SentGen.subst(obj, 'var') {
var = "v#{vars.length}"
vars << var
var
}
return r, vars
end
def check_nofork(t)
t, vars = rename_var(t)
t = SentGen.subst(t, 'vars') { " [#{vars.join(",")}]" }
s = [t].join
#print "#{s}\t\t"
#STDOUT.flush
v = eval(s)
#puts "#{v.inspect[1...-1]}"
##xxx: assertion for v here.
end
def test_yield
syntax = SentGen.expand_syntax(Syntax)
SentGen.each_tree(syntax, :test, 4) {|t|
check_nofork(t)
}
end
end
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