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Diffstat (limited to 'spec/ruby/core/array/to_h_spec.rb')
-rw-r--r-- | spec/ruby/core/array/to_h_spec.rb | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/spec/ruby/core/array/to_h_spec.rb b/spec/ruby/core/array/to_h_spec.rb new file mode 100644 index 0000000000..17783914aa --- /dev/null +++ b/spec/ruby/core/array/to_h_spec.rb @@ -0,0 +1,37 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../fixtures/classes', __FILE__) + +describe "Array#to_h" do + it "converts empty array to empty hash" do + [].to_h.should == {} + end + + it "converts [key, value] pairs to a hash" do + hash = [[:a, 1], [:b, 2]].to_h + hash.should == { a: 1, b: 2 } + end + + it "uses the last value of a duplicated key" do + hash = [[:a, 1], [:b, 2], [:a, 3]].to_h + hash.should == { a: 3, b: 2 } + end + + it "calls #to_ary on contents" do + pair = mock('to_ary') + pair.should_receive(:to_ary).and_return([:b, 2]) + hash = [[:a, 1], pair].to_h + hash.should == { a: 1, b: 2 } + end + + it "raises TypeError if an element is not an array" do + lambda { [:x].to_h }.should raise_error(TypeError) + end + + it "raises ArgumentError if an element is not a [key, value] pair" do + lambda { [[:x]].to_h }.should raise_error(ArgumentError) + end + + it "does not accept arguments" do + lambda { [].to_h(:a, :b) }.should raise_error(ArgumentError) + end +end |