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diff --git a/spec/unit/application/exit_code_spec.rb b/spec/unit/application/exit_code_spec.rb
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+++ b/spec/unit/application/exit_code_spec.rb
@@ -0,0 +1,231 @@
+#
+# Author:: Steven Murawski (<smurawski@chef.io>)
+# Copyright:: Copyright 2016, Chef Software, Inc.
+# License:: Apache License, Version 2.0
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+require "chef"
+require "spec_helper"
+
+require "chef/application/exit_code"
+
+describe Chef::Application::ExitCode do
+
+  let(:exit_codes) { Chef::Application::ExitCode }
+
+  let(:valid_rfc_exit_codes) { Chef::Application::ExitCode::VALID_RFC_062_EXIT_CODES.values }
+
+  context "Validates the return codes from RFC 062" do
+
+    before do
+      allow(Chef::Config).to receive(:[]).with(:exit_status).and_return(:enabled)
+    end
+
+    it "validates a SUCCESS return code of 0" do
+      expect(valid_rfc_exit_codes.include?(0)).to eq(true)
+    end
+
+    it "validates a GENERIC_FAILURE return code of 1" do
+      expect(valid_rfc_exit_codes.include?(1)).to eq(true)
+    end
+
+    it "validates a SIGINT_RECEIVED return code of 2" do
+      expect(valid_rfc_exit_codes.include?(2)).to eq(true)
+    end
+
+    it "validates a SIGTERM_RECEIVED return code of 3" do
+      expect(valid_rfc_exit_codes.include?(3)).to eq(true)
+    end
+
+    it "validates a AUDIT_MODE_FAILURE return code of 42" do
+      expect(valid_rfc_exit_codes.include?(42)).to eq(true)
+    end
+
+    it "validates a REBOOT_SCHEDULED return code of 35" do
+      expect(valid_rfc_exit_codes.include?(35)).to eq(true)
+    end
+
+    it "validates a REBOOT_NEEDED return code of 37" do
+      expect(valid_rfc_exit_codes.include?(37)).to eq(true)
+    end
+
+    it "validates a REBOOT_FAILED return code of 41" do
+      expect(valid_rfc_exit_codes.include?(41)).to eq(true)
+    end
+  end
+
+  context "when Chef::Config :exit_status is not configured" do
+    before do
+      allow(Chef::Config).to receive(:[]).with(:exit_status).and_return(nil)
+      allow(Chef::Config).to receive(:[]).with(:treat_deprecation_warnings_as_errors).and_return(false)
+    end
+
+    it "writes a deprecation warning" do
+      warn = "Chef RFC 062 (https://github.com/chef/chef-rfc/master/rfc062-exit-status.md) defines the" \
+      " exit codes that should be used with Chef.  Chef::Application::ExitCode defines valid exit codes"  \
+      " In a future release, non-standard exit codes will be redefined as" \
+      " GENERIC_FAILURE unless `exit_status` is set to `:disabled` in your client.rb."
+      expect(Chef).to receive(:log_deprecation).with(warn)
+      expect(exit_codes.normalize_exit_code(151)).to eq(151)
+    end
+
+    it "does not modify non-RFC exit codes" do
+      expect(exit_codes.normalize_exit_code(151)).to eq(151)
+    end
+
+    it "returns DEPRECATED_FAILURE when no exit code is specified" do
+      expect(exit_codes.normalize_exit_code()).to eq(-1)
+    end
+
+    it "returns SIGINT_RECEIVED when a SIGINT is received" do
+      expect(exit_codes.normalize_exit_code(Chef::Exceptions::SigInt.new("BOOM"))).to eq(2)
+    end
+
+    it "returns SIGTERM_RECEIVED when a SIGTERM is received" do
+      expect(exit_codes.normalize_exit_code(Chef::Exceptions::SigTerm.new("BOOM"))).to eq(3)
+    end
+
+    it "returns SIGINT_RECEIVED when a deprecated exit code error is received" do
+      expect(exit_codes.normalize_exit_code(Chef::Exceptions::DeprecatedExitCode.new("BOOM"))).to eq(2)
+    end
+
+    it "returns GENERIC_FAILURE when an exception is specified" do
+      expect(exit_codes.normalize_exit_code(Exception.new("BOOM"))).to eq(1)
+    end
+
+  end
+
+  context "when Chef::Config :exit_status is configured to not validate exit codes" do
+    before do
+      allow(Chef::Config).to receive(:[]).with(:exit_status).and_return(:disabled)
+      allow(Chef::Config).to receive(:[]).with(:treat_deprecation_warnings_as_errors).and_return(false)
+    end
+
+    it "does not write a deprecation warning" do
+      warn = "Chef RFC 062 (https://github.com/chef/chef-rfc/master/rfc062-exit-status.md) defines the" \
+      " exit codes that should be used with Chef.  Chef::Application::ExitCode defines valid exit codes"  \
+      " In a future release, non-standard exit codes will be redefined as" \
+      " GENERIC_FAILURE unless `exit_status` is set to `:disabled` in your client.rb."
+      expect(Chef).not_to receive(:log_deprecation).with(warn)
+      expect(exit_codes.normalize_exit_code(151)).to eq(151)
+    end
+
+    it "does not modify non-RFC exit codes" do
+      expect(exit_codes.normalize_exit_code(151)).to eq(151)
+    end
+
+    it "returns DEPRECATED_FAILURE when no exit code is specified" do
+      expect(exit_codes.normalize_exit_code()).to eq(-1)
+    end
+
+    it "returns GENERIC_FAILURE when an exception is specified" do
+      expect(exit_codes.normalize_exit_code(Exception.new("BOOM"))).to eq(1)
+    end
+
+    it "returns SUCCESS when a reboot is pending" do
+      allow(Chef::DSL::RebootPending).to receive(:reboot_pending?).and_return(true)
+      expect(exit_codes.normalize_exit_code(0)).to eq(0)
+    end
+
+    it "returns SIGINT_RECEIVED when a SIGINT is received" do
+      expect(exit_codes.normalize_exit_code(Chef::Exceptions::SigInt.new("BOOM"))).to eq(2)
+    end
+
+    it "returns SIGTERM_RECEIVED when a SIGTERM is received" do
+      expect(exit_codes.normalize_exit_code(Chef::Exceptions::SigTerm.new("BOOM"))).to eq(3)
+    end
+
+    it "returns SIGINT_RECEIVED when a deprecated exit code error is received" do
+      expect(exit_codes.normalize_exit_code(Chef::Exceptions::DeprecatedExitCode.new("BOOM"))).to eq(2)
+    end
+  end
+
+  context "when Chef::Config :exit_status is configured to validate exit codes" do
+    before do
+      allow(Chef::Config).to receive(:[]).with(:exit_status).and_return(:enabled)
+      allow(Chef::Config).to receive(:[]).with(:treat_deprecation_warnings_as_errors).and_return(false)
+    end
+
+    it "does write a deprecation warning" do
+      warn = "Chef RFC 062 (https://github.com/chef/chef-rfc/master/rfc062-exit-status.md) defines the" \
+      " exit codes that should be used with Chef.  Chef::Application::ExitCode defines valid exit codes"  \
+      " In a future release, non-standard exit codes will be redefined as" \
+      " GENERIC_FAILURE unless `exit_status` is set to `:disabled` in your client.rb."
+      expect(Chef).to receive(:log_deprecation).with(warn)
+      expect(exit_codes.normalize_exit_code(151)).to eq(1)
+    end
+
+    it "returns a GENERIC_FAILURE for non-RFC exit codes" do
+      expect(exit_codes.normalize_exit_code(151)).to eq(1)
+    end
+
+    it "returns GENERIC_FAILURE when no exit code is specified" do
+      expect(exit_codes.normalize_exit_code()).to eq(1)
+    end
+
+    it "returns SIGINT_RECEIVED when a SIGINT is received" do
+      expect(exit_codes.normalize_exit_code(Chef::Exceptions::SigInt.new("BOOM"))).to eq(2)
+    end
+
+    it "returns SIGTERM_RECEIVED when a SIGTERM is received" do
+      expect(exit_codes.normalize_exit_code(Chef::Exceptions::SigTerm.new("BOOM"))).to eq(3)
+    end
+
+    it "returns GENERIC_FAILURE when a deprecated exit code error is received" do
+      expect(exit_codes.normalize_exit_code(Chef::Exceptions::DeprecatedExitCode.new("BOOM"))).to eq(1)
+    end
+
+    it "returns GENERIC_FAILURE when an exception is specified" do
+      expect(exit_codes.normalize_exit_code(Exception.new("BOOM"))).to eq(1)
+    end
+
+    it "returns AUDIT_MODE_FAILURE when there is an audit error" do
+      audit_error = Chef::Exceptions::AuditError.new("BOOM")
+      runtime_error = Chef::Exceptions::RunFailedWrappingError.new(audit_error)
+      expect(exit_codes.normalize_exit_code(runtime_error)).to eq(42)
+    end
+
+    it "returns REBOOT_SCHEDULED when there is an reboot requested" do
+      reboot_error = Chef::Exceptions::Reboot.new("BOOM")
+      runtime_error = Chef::Exceptions::RunFailedWrappingError.new(reboot_error)
+      expect(exit_codes.normalize_exit_code(runtime_error)).to eq(35)
+    end
+
+    it "returns REBOOT_FAILED when the reboot command fails" do
+      reboot_error = Chef::Exceptions::RebootFailed.new("BOOM")
+      runtime_error = Chef::Exceptions::RunFailedWrappingError.new(reboot_error)
+      expect(exit_codes.normalize_exit_code(runtime_error)).to eq(41)
+    end
+
+    it "returns REBOOT_NEEDED when a reboot is pending" do
+      reboot_error = Chef::Exceptions::RebootPending.new("BOOM")
+      runtime_error = Chef::Exceptions::RunFailedWrappingError.new(reboot_error)
+      expect(exit_codes.normalize_exit_code(runtime_error)).to eq(37)
+    end
+
+    it "returns SIGINT_RECEIVED when a SIGINT is received." do
+      sigint_error = Chef::Exceptions::SigInt.new("BOOM")
+      runtime_error = Chef::Exceptions::RunFailedWrappingError.new(sigint_error)
+      expect(exit_codes.normalize_exit_code(runtime_error)).to eq(2)
+    end
+
+    it "returns SIGTERM_RECEIVED when a SIGTERM is received." do
+      sigterm_error = Chef::Exceptions::SigTerm.new("BOOM")
+      runtime_error = Chef::Exceptions::RunFailedWrappingError.new(sigterm_error)
+      expect(exit_codes.normalize_exit_code(runtime_error)).to eq(3)
+    end
+  end
+
+end