1 files changed, 63 insertions, 0 deletions
diff --git a/spec/ruby/optional/capi/shared/rbasic.rb b/spec/ruby/optional/capi/shared/rbasic.rb
new file mode 100644
index 0000000000..5ef63e81e3
--- /dev/null
+++ b/spec/ruby/optional/capi/shared/rbasic.rb
@@ -0,0 +1,63 @@
+describe :rbasic, shared: true do
+
+  before :all do
+    specs = CApiRBasicSpecs.new
+    @taint = ruby_version_is(''...'3.1') ? specs.taint_flag : 0
+    @freeze = specs.freeze_flag
+  end
+
+  it "reports the appropriate FREEZE flag for the object when reading" do
+    obj, _ = @data.call
+    initial = @specs.get_flags(obj)
+    obj.freeze
+    @specs.get_flags(obj).should == @freeze | initial
+  end
+
+  it "supports setting the FREEZE flag" do
+    obj, _ = @data.call
+    initial = @specs.get_flags(obj)
+    @specs.set_flags(obj, @freeze | initial).should == @freeze | initial
+    obj.should.frozen?
+  end
+
+  ruby_version_is ""..."2.7" do
+    it "reports the appropriate FREEZE and TAINT flags for the object when reading" do
+      obj, _ = @data.call
+      initial = @specs.get_flags(obj)
+      obj.taint
+      @specs.get_flags(obj).should == @taint | initial
+      obj.untaint
+      @specs.get_flags(obj).should == initial
+      obj.freeze
+      @specs.get_flags(obj).should == @freeze | initial
+
+      obj, _ = @data.call
+      obj.taint
+      obj.freeze
+      @specs.get_flags(obj).should == @freeze | @taint | initial
+    end
+
+    it "supports setting the FREEZE and TAINT flags" do
+      obj, _ = @data.call
+      initial = @specs.get_flags(obj)
+      @specs.set_flags(obj, @taint | initial).should == @taint | initial
+      obj.should.tainted?
+      @specs.set_flags(obj, initial).should == initial
+      obj.should_not.tainted?
+      @specs.set_flags(obj, @freeze | initial).should == @freeze | initial
+      obj.should.frozen?
+
+      obj, _ = @data.call
+      @specs.set_flags(obj, @freeze | @taint | initial).should == @freeze | @taint | initial
+      obj.should.tainted?
+      obj.should.frozen?
+    end
+  end
+
+  it "supports retrieving the (meta)class" do
+    obj, _ = @data.call
+    @specs.get_klass(obj).should == obj.class
+    obj.singleton_class # ensure the singleton class exists
+    @specs.get_klass(obj).should == obj.singleton_class
+  end
+end