diff options
author | yugui <yugui@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2008-08-25 15:02:05 +0000 |
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committer | yugui <yugui@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2008-08-25 15:02:05 +0000 |
commit | 0dc342de848a642ecce8db697b8fecd83a63e117 (patch) | |
tree | 2b7ed4724aff1f86073e4740134bda9c4aac1a39 /trunk/test/ruby/test_lambda.rb | |
parent | ef70cf7138ab8034b5b806f466e4b484b24f0f88 (diff) |
added tag v1_9_0_4
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/tags/v1_9_0_4@18845 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'trunk/test/ruby/test_lambda.rb')
-rw-r--r-- | trunk/test/ruby/test_lambda.rb | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/trunk/test/ruby/test_lambda.rb b/trunk/test/ruby/test_lambda.rb new file mode 100644 index 0000000000..bb0861ab53 --- /dev/null +++ b/trunk/test/ruby/test_lambda.rb @@ -0,0 +1,68 @@ +require 'test/unit' + +class TestLambdaParameters < Test::Unit::TestCase + + def test_exact_parameter + assert_raise(ArgumentError){(1..3).each(&lambda{})} + end + + def test_call_simple + assert_equal(1, lambda{|a| a}.call(1)) + assert_equal([1,2], lambda{|a, b| [a,b]}.call(1,2)) + assert_raises(ArgumentError) { lambda{|a|}.call(1,2) } + assert_raises(ArgumentError) { lambda{|a|}.call() } + assert_raises(ArgumentError) { lambda{}.call(1) } + assert_raises(ArgumentError) { lambda{|a, b|}.call(1,2,3) } + + assert_equal(1, ->(a){ a }.call(1)) + assert_equal([1,2], ->(a,b){ [a,b] }.call(1,2)) + assert_raises(ArgumentError) { ->(a){ }.call(1,2) } + assert_raises(ArgumentError) { ->(a){ }.call() } + assert_raises(ArgumentError) { ->(){ }.call(1) } + assert_raises(ArgumentError) { ->(a,b){ }.call(1,2,3) } + end + +end + +__END__ + def test_lambda_as_iterator + a = 0 + 2.times(&->(_){ a += 1 }) + assert_equal(a, 2) + end + + def test_call_rest_args + assert_equal([1,2], ->(*a){ a }.call(1,2)) + assert_equal([1,2,[]], ->(a,b,*c){ [a,b,c] }.call(1,2)) + assert_raises(ArgumentError){ ->(a,*b){ }.call() } + end + + def test_call_opt_args + assert_equal([1,2,3,4], ->(a,b,c=3,d=4){ [a,b,c,d] }.call(1,2)) + assert_equal([1,2,3,4], ->(a,b,c=0,d=4){ [a,b,c,d] }.call(1,2,3)) + assert_raises(ArgumentError){ ->(a,b=1){ }.call() } + assert_raises(ArgumentError){ ->(a,b=1){ }.call(1,2,3) } + end + + def test_call_rest_and_opt + assert_equal([1,2,3,[]], ->(a,b=2,c=3,*d){ [a,b,c,d] }.call(1)) + assert_equal([1,2,3,[]], ->(a,b=0,c=3,*d){ [a,b,c,d] }.call(1,2)) + assert_equal([1,2,3,[4,5,6]], ->(a,b=0,c=0,*d){ [a,b,c,d] }.call(1,2,3,4,5,6)) + assert_raises(ArgumentError){ ->(a,b=1,*c){ }.call() } + end + + def test_call_with_block + f = ->(a,b,c=3,*d,&e){ [a,b,c,d,e.call(d + [a,b,c])] } + assert_equal([1,2,3,[],6], f.call(1,2){|z| z.inject{|s,x| s+x} } ) + assert_equal(nil, ->(&b){ b }.call) + foo { puts "bogus block " } + assert_equal(1, ->(&b){ b.call }.call { 1 }) + b = nil + assert_equal(1, ->(&b){ b.call }.call { 1 }) + assert_nil(b) + end + + def foo + assert_equal(nil, ->(&b){ b }.call) + end +end |