1 files changed, 2 insertions, 75 deletions
diff --git a/spec/ruby/core/string/uminus_spec.rb b/spec/ruby/core/string/uminus_spec.rb
index 3a81b64126..46d88f6704 100644
--- a/spec/ruby/core/string/uminus_spec.rb
+++ b/spec/ruby/core/string/uminus_spec.rb
@@ -1,79 +1,6 @@
 require_relative '../../spec_helper'
+require_relative 'shared/dedup'
 
 describe 'String#-@' do
-  it 'returns self if the String is frozen' do
-    input  = 'foo'.freeze
-    output = -input
-
-    output.should equal(input)
-    output.should.frozen?
-  end
-
-  it 'returns a frozen copy if the String is not frozen' do
-    input  = 'foo'
-    output = -input
-
-    output.should.frozen?
-    output.should_not equal(input)
-    output.should == 'foo'
-  end
-
-  it "returns the same object for equal unfrozen strings" do
-    origin = "this is a string"
-    dynamic = %w(this is a string).join(' ')
-
-    origin.should_not equal(dynamic)
-    (-origin).should equal(-dynamic)
-  end
-
-  it "returns the same object when it's called on the same String literal" do
-    (-"unfrozen string").should equal(-"unfrozen string")
-    (-"unfrozen string").should_not equal(-"another unfrozen string")
-  end
-
-  ruby_version_is ""..."2.6" do
-    it "does not deduplicate already frozen strings" do
-      dynamic = %w(this string is frozen).join(' ').freeze
-
-      dynamic.should_not equal("this string is frozen".freeze)
-
-      (-dynamic).should_not equal("this string is frozen".freeze)
-      (-dynamic).should_not equal(-"this string is frozen".freeze)
-      (-dynamic).should == "this string is frozen"
-    end
-
-    it "does not deduplicate tainted strings" do
-      dynamic = %w(this string is frozen).join(' ')
-      dynamic.taint
-      (-dynamic).should_not equal("this string is frozen".freeze)
-      (-dynamic).should_not equal(-"this string is frozen".freeze)
-      (-dynamic).should == "this string is frozen"
-    end
-
-    it "does not deduplicate strings with additional instance variables" do
-      dynamic = %w(this string is frozen).join(' ')
-      dynamic.instance_variable_set(:@foo, :bar)
-      (-dynamic).should_not equal("this string is frozen".freeze)
-      (-dynamic).should_not equal(-"this string is frozen".freeze)
-      (-dynamic).should == "this string is frozen"
-    end
-  end
-
-  ruby_version_is "2.6" do
-    it "deduplicates frozen strings" do
-      dynamic = %w(this string is frozen).join(' ').freeze
-
-      dynamic.should_not equal("this string is frozen".freeze)
-
-      (-dynamic).should equal("this string is frozen".freeze)
-      (-dynamic).should equal(-"this string is frozen".freeze)
-    end
-  end
-
-  ruby_version_is "3.0" do
-    it "interns the provided string if it is frozen" do
-      dynamic = "this string is unique and frozen #{rand}".freeze
-      (-dynamic).should equal(dynamic)
-    end
-  end
+  it_behaves_like :string_dedup, :-@
 end