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Diffstat (limited to 'spec/ruby/core/hash/compact_spec.rb')
-rw-r--r-- | spec/ruby/core/hash/compact_spec.rb | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/spec/ruby/core/hash/compact_spec.rb b/spec/ruby/core/hash/compact_spec.rb new file mode 100644 index 0000000000..d9ef8a2987 --- /dev/null +++ b/spec/ruby/core/hash/compact_spec.rb @@ -0,0 +1,61 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../fixtures/classes', __FILE__) + +ruby_version_is "2.4" do + describe "Hash#compact" do + before :each do + @hash = { truthy: true, false: false, nil: nil, nil => true } + @initial_pairs = @hash.dup + @compact = { truthy: true, false: false, nil => true } + end + + it "returns new object that rejects pair has nil value" do + ret = @hash.compact + ret.should_not equal(@hash) + ret.should == @compact + end + + it "keeps own pairs" do + @hash.compact + @hash.should == @initial_pairs + end + end + + describe "Hash#compact!" do + before :each do + @hash = { truthy: true, false: false, nil: nil, nil => true } + @initial_pairs = @hash.dup + @compact = { truthy: true, false: false, nil => true } + end + + it "returns self" do + @hash.compact!.should equal(@hash) + end + + it "rejects own pair has nil value" do + @hash.compact! + @hash.should == @compact + end + + context "when each pair does not have nil value" do + before :each do + @hash.compact! + end + + it "returns nil" do + @hash.compact!.should be_nil + end + end + + describe "on frozen instance" do + before :each do + @hash.freeze + end + + it "keeps pairs and raises a RuntimeError" do + ->{ @hash.compact! }.should raise_error(RuntimeError) + @hash.should == @initial_pairs + end + end + end +end |