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-rw-r--r--spec/rubyspec/core/hash/shift_spec.rb64
1 files changed, 0 insertions, 64 deletions
diff --git a/spec/rubyspec/core/hash/shift_spec.rb b/spec/rubyspec/core/hash/shift_spec.rb
deleted file mode 100644
index 3991da9656..0000000000
--- a/spec/rubyspec/core/hash/shift_spec.rb
+++ /dev/null
@@ -1,64 +0,0 @@
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
-
-describe "Hash#shift" do
- it "removes a pair from hash and return it" do
- h = { a: 1, b: 2, "c" => 3, nil => 4, [] => 5 }
- h2 = h.dup
-
- h.size.times do |i|
- r = h.shift
- r.should be_kind_of(Array)
- h2[r.first].should == r.last
- h.size.should == h2.size - i - 1
- end
-
- h.should == {}
- end
-
- # MRI explicitly implements this behavior
- it "allows shifting entries while iterating" do
- h = { a: 1, b: 2, c: 3 }
- visited = []
- shifted = []
- h.each_pair { |k,v|
- visited << k
- shifted << h.shift
- }
- visited.should == [:a, :b, :c]
- shifted.should == [[:a, 1], [:b, 2], [:c, 3]]
- h.should == {}
- end
-
- it "calls #default with nil if the Hash is empty" do
- h = {}
- def h.default(key)
- key.should == nil
- :foo
- end
- h.shift.should == :foo
- end
-
- it "returns nil from an empty hash" do
- {}.shift.should == nil
- end
-
- it "returns (computed) default for empty hashes" do
- Hash.new(5).shift.should == 5
- h = Hash.new { |*args| args }
- h.shift.should == [h, nil]
- end
-
- it "preserves Hash invariants when removing the last item" do
- h = { :a => 1, :b => 2 }
- h.shift.should == [:a, 1]
- h.shift.should == [:b, 2]
- h[:c] = 3
- h.should == {:c => 3}
- end
-
- it "raises a RuntimeError if called on a frozen instance" do
- lambda { HashSpecs.frozen_hash.shift }.should raise_error(RuntimeError)
- lambda { HashSpecs.empty_frozen_hash.shift }.should raise_error(RuntimeError)
- end
-end