diff options
Diffstat (limited to 'spec/ruby/core/hash/rehash_spec.rb')
-rw-r--r-- | spec/ruby/core/hash/rehash_spec.rb | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/spec/ruby/core/hash/rehash_spec.rb b/spec/ruby/core/hash/rehash_spec.rb new file mode 100644 index 0000000000..09315737b6 --- /dev/null +++ b/spec/ruby/core/hash/rehash_spec.rb @@ -0,0 +1,42 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../fixtures/classes', __FILE__) + +describe "Hash#rehash" do + it "reorganizes the hash by recomputing all key hash codes" do + k1 = [1] + k2 = [2] + h = {} + h[k1] = 0 + h[k2] = 1 + + k1 << 2 + h.key?(k1).should == false + h.keys.include?(k1).should == true + + h.rehash.should equal(h) + h.key?(k1).should == true + h[k1].should == 0 + + k1 = mock('k1') + k2 = mock('k2') + v1 = mock('v1') + v2 = mock('v2') + + v1.should_not_receive(:hash) + v2.should_not_receive(:hash) + + h = { k1 => v1, k2 => v2 } + + k1.should_receive(:hash).twice.and_return(0) + k2.should_receive(:hash).twice.and_return(0) + + h.rehash + h[k1].should == v1 + h[k2].should == v2 + end + + it "raises a RuntimeError if called on a frozen instance" do + lambda { HashSpecs.frozen_hash.rehash }.should raise_error(RuntimeError) + lambda { HashSpecs.empty_frozen_hash.rehash }.should raise_error(RuntimeError) + end +end |