diff options
author | eregon <eregon@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2017-05-07 12:04:49 +0000 |
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committer | eregon <eregon@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2017-05-07 12:04:49 +0000 |
commit | 95e8c48dd3348503a8c7db5d0498894a1b676395 (patch) | |
tree | 9eef7f720314ebaff56845a74e203770e62284e4 /spec/rubyspec/core/enumerator/next_values_spec.rb | |
parent | ed7d803500de38186c74bce94d233e85ef51e503 (diff) |
Add in-tree mspec and ruby/spec
* For easier modifications of ruby/spec by MRI developers.
* .gitignore: track changes under spec.
* spec/mspec, spec/rubyspec: add in-tree mspec and ruby/spec.
These files can therefore be updated like any other file in MRI.
Instructions are provided in spec/README.
[Feature #13156] [ruby-core:79246]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58595 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'spec/rubyspec/core/enumerator/next_values_spec.rb')
-rw-r--r-- | spec/rubyspec/core/enumerator/next_values_spec.rb | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/spec/rubyspec/core/enumerator/next_values_spec.rb b/spec/rubyspec/core/enumerator/next_values_spec.rb new file mode 100644 index 0000000000..2c4b23dc8d --- /dev/null +++ b/spec/rubyspec/core/enumerator/next_values_spec.rb @@ -0,0 +1,55 @@ +require File.expand_path('../../../spec_helper', __FILE__) + +describe "Enumerator#next_values" do + before :each do + o = Object.new + def o.each + yield :a + yield :b1, :b2 + yield :c + yield :d1, :d2 + yield :e1, :e2, :e3 + yield nil + yield + end + + @e = o.to_enum + end + + it "returns the next element in self" do + @e.next_values.should == [:a] + end + + it "advances the position of the current element" do + @e.next.should == :a + @e.next_values.should == [:b1, :b2] + @e.next.should == :c + end + + it "advances the position of the enumerator each time when called multiple times" do + 2.times { @e.next_values } + @e.next_values.should == [:c] + @e.next.should == [:d1, :d2] + end + + it "works in concert with #rewind" do + 2.times { @e.next } + @e.rewind + @e.next_values.should == [:a] + end + + it "returns an array with only nil if yield is called with nil" do + 5.times { @e.next } + @e.next_values.should == [nil] + end + + it "returns an empty array if yield is called without arguments" do + 6.times { @e.next } + @e.next_values.should == [] + end + + it "raises StopIteration if called on a finished enumerator" do + 7.times { @e.next } + lambda { @e.next_values }.should raise_error(StopIteration) + end +end |