1 files changed, 25 insertions, 0 deletions
diff --git a/spec/ruby/core/kernel/trust_spec.rb b/spec/ruby/core/kernel/trust_spec.rb
new file mode 100644
index 0000000000..a9fda5c5c6
--- /dev/null
+++ b/spec/ruby/core/kernel/trust_spec.rb
@@ -0,0 +1,25 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+require File.expand_path('../fixtures/classes', __FILE__)
+
+describe "Kernel#trust" do
+  it "returns self" do
+    o = Object.new
+    o.trust.should equal(o)
+  end
+
+  it "clears the untrusted bit" do
+    o = Object.new.untrust
+    o.trust
+    o.untrusted?.should == false
+  end
+
+  it "raises RuntimeError on an untrusted, frozen object" do
+    o = Object.new.untrust.freeze
+    lambda { o.trust }.should raise_error(RuntimeError)
+  end
+
+  it "does not raise an error on a trusted, frozen object" do
+    o = Object.new.freeze
+    o.trust.should equal(o)
+  end
+end