Add specs for ObjectSpace::WeakKeyMap

[Feature #18498]

1 files changed, 26 insertions, 0 deletions

diff --git a/spec/ruby/core/objectspace/weakkeymap/element_reference_spec.rb b/spec/ruby/core/objectspace/weakkeymap/element_reference_spec.rb
new file mode 100644
index 0000000000..7246edbcc9
--- /dev/null
+++ b/spec/ruby/core/objectspace/weakkeymap/element_reference_spec.rb
@@ -0,0 +1,26 @@
+require_relative '../../../spec_helper'
+
+ruby_version_is "3.3" do
+  describe "ObjectSpace::WeakKeyMap#[]" do
+    it "is faithful to the map's content" do
+      map = ObjectSpace::WeakKeyMap.new
+      key1, key2 = %w[a b].map(&:upcase)
+      ref1, ref2 = %w[x y]
+      map[key1] = ref1
+      map[key1].should == ref1
+      map[key1] = ref1
+      map[key1].should == ref1
+      map[key2] = ref2
+      map[key1].should == ref1
+      map[key2].should == ref2
+    end
+
+    it "matches using equality semantics" do
+      map = ObjectSpace::WeakKeyMap.new
+      key1, key2 = %w[a a].map(&:upcase)
+      ref = "x"
+      map[key1] = ref
+      map[key2].should == ref
+    end
+  end
+end
\ No newline at end of file