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Diffstat (limited to 'spec/ruby/core/hash/new_spec.rb')
-rw-r--r-- | spec/ruby/core/hash/new_spec.rb | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/spec/ruby/core/hash/new_spec.rb b/spec/ruby/core/hash/new_spec.rb new file mode 100644 index 0000000000..c31cc2abf4 --- /dev/null +++ b/spec/ruby/core/hash/new_spec.rb @@ -0,0 +1,36 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../fixtures/classes', __FILE__) + +describe "Hash.new" do + it "creates an empty Hash if passed no arguments" do + Hash.new.should == {} + Hash.new.size.should == 0 + end + + it "creates a new Hash with default object if passed a default argument" do + Hash.new(5).default.should == 5 + Hash.new({}).default.should == {} + end + + it "does not create a copy of the default argument" do + str = "foo" + Hash.new(str).default.should equal(str) + end + + it "creates a Hash with a default_proc if passed a block" do + Hash.new.default_proc.should == nil + + h = Hash.new { |x| "Answer to #{x}" } + h.default_proc.call(5).should == "Answer to 5" + h.default_proc.call("x").should == "Answer to x" + end + + it "raises an ArgumentError if more than one argument is passed" do + lambda { Hash.new(5,6) }.should raise_error(ArgumentError) + end + + it "raises an ArgumentError if passed both default argument and default block" do + lambda { Hash.new(5) { 0 } }.should raise_error(ArgumentError) + lambda { Hash.new(nil) { 0 } }.should raise_error(ArgumentError) + end +end |