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diff --git a/spec/unit/mixin/powershell_exec_spec.rb b/spec/unit/mixin/powershell_exec_spec.rb
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+++ b/spec/unit/mixin/powershell_exec_spec.rb
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+#
+# Author:: Stuart Preston (<stuart@chef.io>)
+# Copyright:: Copyright 2018, 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 "spec_helper"
+require "chef/mixin/powershell_exec"
+
+describe Chef::Mixin::PowershellExec, :windows_only do
+  let(:powershell_mixin) { Class.new { include Chef::Mixin::PowershellExec } }
+  subject(:object) { powershell_mixin.new }
+
+  describe "#powershell_exec" do
+    it "runs a basic command and returns a Chef::PowerShell object" do
+      expect(object.powershell_exec("$PSVersionTable")).to be_kind_of(Chef::PowerShell)
+    end
+
+    it "runs a command that fails with a non-terminating error and can trap the error via .error?" do
+      execution = object.powershell_exec("this-should-error")
+      expect(execution.error?).to eql(true)
+    end
+
+    it "runs a command that fails with a non-terminating error and can list the errors" do
+      execution = object.powershell_exec("this-should-error")
+      expect(execution.errors).to be_a_kind_of(Array)
+      expect(execution.errors[0]).to be_a_kind_of(String)
+      expect(execution.errors[0]).to include("CommandNotFoundException")
+    end
+  end
+end