9 files changed, 105 insertions, 0 deletions
diff --git a/spec/ruby/core/true/and_spec.rb b/spec/ruby/core/true/and_spec.rb
new file mode 100644
index 0000000000..99e69d3ae0
--- /dev/null
+++ b/spec/ruby/core/true/and_spec.rb
@@ -0,0 +1,11 @@
+require_relative '../../spec_helper'
+
+describe "TrueClass#&" do
+  it "returns false if other is nil or false, otherwise true" do
+    (true & true).should == true
+    (true & false).should == false
+    (true & nil).should == false
+    (true & "").should == true
+    (true & mock('x')).should == true
+  end
+end
diff --git a/spec/ruby/core/true/case_compare_spec.rb b/spec/ruby/core/true/case_compare_spec.rb
new file mode 100644
index 0000000000..dee6dd0227
--- /dev/null
+++ b/spec/ruby/core/true/case_compare_spec.rb
@@ -0,0 +1,13 @@
+require_relative '../../spec_helper'
+
+describe "TrueClass#===" do
+  it "returns true for true" do
+    (true === true).should == true
+  end
+
+  it "returns false for non-true object" do
+    (true === 1).should == false
+    (true === "").should == false
+    (true === Object).should == false
+  end
+end
diff --git a/spec/ruby/core/true/dup_spec.rb b/spec/ruby/core/true/dup_spec.rb
new file mode 100644
index 0000000000..351457ed22
--- /dev/null
+++ b/spec/ruby/core/true/dup_spec.rb
@@ -0,0 +1,7 @@
+require_relative '../../spec_helper'
+
+describe "TrueClass#dup" do
+  it "returns self" do
+    true.dup.should equal(true)
+  end
+end
diff --git a/spec/ruby/core/true/inspect_spec.rb b/spec/ruby/core/true/inspect_spec.rb
new file mode 100644
index 0000000000..09d1914856
--- /dev/null
+++ b/spec/ruby/core/true/inspect_spec.rb
@@ -0,0 +1,7 @@
+require_relative '../../spec_helper'
+
+describe "TrueClass#inspect" do
+  it "returns the string 'true'" do
+    true.inspect.should == "true"
+  end
+end
diff --git a/spec/ruby/core/true/or_spec.rb b/spec/ruby/core/true/or_spec.rb
new file mode 100644
index 0000000000..9bf76a62b8
--- /dev/null
+++ b/spec/ruby/core/true/or_spec.rb
@@ -0,0 +1,11 @@
+require_relative '../../spec_helper'
+
+describe "TrueClass#|" do
+  it "returns true" do
+    (true | true).should == true
+    (true | false).should == true
+    (true | nil).should == true
+    (true | "").should == true
+    (true | mock('x')).should == true
+  end
+end
diff --git a/spec/ruby/core/true/singleton_method_spec.rb b/spec/ruby/core/true/singleton_method_spec.rb
new file mode 100644
index 0000000000..c06793850f
--- /dev/null
+++ b/spec/ruby/core/true/singleton_method_spec.rb
@@ -0,0 +1,15 @@
+require_relative '../../spec_helper'
+
+describe "TrueClass#singleton_method" do
+  ruby_version_is '3.3' do
+    it "raises regardless of whether TrueClass defines the method" do
+      -> { true.singleton_method(:foo) }.should raise_error(NameError)
+      begin
+        def (true).foo; end
+        -> { true.singleton_method(:foo) }.should raise_error(NameError)
+      ensure
+        TrueClass.send(:remove_method, :foo)
+      end
+    end
+  end
+end
diff --git a/spec/ruby/core/true/to_s_spec.rb b/spec/ruby/core/true/to_s_spec.rb
new file mode 100644
index 0000000000..fa1b53a580
--- /dev/null
+++ b/spec/ruby/core/true/to_s_spec.rb
@@ -0,0 +1,15 @@
+require_relative '../../spec_helper'
+
+describe "TrueClass#to_s" do
+  it "returns the string 'true'" do
+    true.to_s.should == "true"
+  end
+
+  it "returns a frozen string" do
+    true.to_s.should.frozen?
+  end
+
+  it "always returns the same string" do
+    true.to_s.should equal(true.to_s)
+  end
+end
diff --git a/spec/ruby/core/true/trueclass_spec.rb b/spec/ruby/core/true/trueclass_spec.rb
new file mode 100644
index 0000000000..02af649d09
--- /dev/null
+++ b/spec/ruby/core/true/trueclass_spec.rb
@@ -0,0 +1,15 @@
+require_relative '../../spec_helper'
+
+describe "TrueClass" do
+  it ".allocate raises a TypeError" do
+    -> do
+      TrueClass.allocate
+    end.should raise_error(TypeError)
+  end
+
+  it ".new is undefined" do
+    -> do
+      TrueClass.new
+    end.should raise_error(NoMethodError)
+  end
+end
diff --git a/spec/ruby/core/true/xor_spec.rb b/spec/ruby/core/true/xor_spec.rb
new file mode 100644
index 0000000000..8f5ecd5075
--- /dev/null
+++ b/spec/ruby/core/true/xor_spec.rb
@@ -0,0 +1,11 @@
+require_relative '../../spec_helper'
+
+describe "TrueClass#^" do
+  it "returns true if other is nil or false, otherwise false" do
+    (true ^ true).should == false
+    (true ^ false).should == true
+    (true ^ nil).should == true
+    (true ^ "").should == false
+    (true ^ mock('x')).should == false
+  end
+end