diff options
Diffstat (limited to 'test/ruby/test_enum.rb')
-rw-r--r-- | test/ruby/test_enum.rb | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/test/ruby/test_enum.rb b/test/ruby/test_enum.rb index 10695ccba5..2a5bd5eaa9 100644 --- a/test/ruby/test_enum.rb +++ b/test/ruby/test_enum.rb @@ -315,4 +315,74 @@ class TestEnumerable < Test::Unit::TestCase ensure $, = ofs end + + def test_chunk + e = [].chunk {|elt| true } + assert_equal([], e.to_a) + + e = @obj.chunk {|elt| elt & 2 == 0 ? false : true } + assert_equal([[false, [1]], [true, [2, 3]], [false, [1]], [true, [2]]], e.to_a) + + e = @obj.chunk(acc: 0) {|elt, h| h[:acc] += elt; h[:acc].even? } + assert_equal([[false, [1,2]], [true, [3]], [false, [1,2]]], e.to_a) + assert_equal([[false, [1,2]], [true, [3]], [false, [1,2]]], e.to_a) # this tests h is duplicated. + + hs = [{}] + e = [:foo].chunk(hs[0]) {|elt, h| + hs << h + true + } + assert_equal([[true, [:foo]]], e.to_a) + assert_equal([[true, [:foo]]], e.to_a) + assert_equal([{}, {}, {}], hs) + assert_not_same(hs[0], hs[1]) + assert_not_same(hs[0], hs[2]) + assert_not_same(hs[1], hs[2]) + + e = @obj.chunk {|elt| elt < 3 ? :_alone : true } + assert_equal([[:_alone, [1]], + [:_alone, [2]], + [true, [3]], + [:_alone, [1]], + [:_alone, [2]]], e.to_a) + + e = @obj.chunk {|elt| elt == 3 ? :_separator : true } + assert_equal([[true, [1, 2]], + [true, [1, 2]]], e.to_a) + + e = @obj.chunk {|elt| elt == 3 ? nil : true } + assert_equal([[true, [1, 2]], + [true, [1, 2]]], e.to_a) + + e = @obj.chunk {|elt| :_foo } + assert_raise(RuntimeError) { e.to_a } + end + + def test_slice_before + e = [].slice_before {|elt| true } + assert_equal([], e.to_a) + + e = @obj.slice_before {|elt| elt.even? } + assert_equal([[1], [2,3,1], [2]], e.to_a) + + e = @obj.slice_before {|elt| elt.odd? } + assert_equal([[1,2], [3], [1,2]], e.to_a) + + e = @obj.slice_before(acc: 0) {|elt, h| h[:acc] += elt; h[:acc].even? } + assert_equal([[1,2], [3,1,2]], e.to_a) + assert_equal([[1,2], [3,1,2]], e.to_a) # this tests h is duplicated. + + hs = [{}] + e = [:foo].slice_before(hs[0]) {|elt, h| + hs << h + true + } + assert_equal([[:foo]], e.to_a) + assert_equal([[:foo]], e.to_a) + assert_equal([{}, {}, {}], hs) + assert_not_same(hs[0], hs[1]) + assert_not_same(hs[0], hs[2]) + assert_not_same(hs[1], hs[2]) + end + end |