[SCVMM] Always assume a string for run_powershell_script

app/models/manageiq/providers/microsoft/infra_manager/powershell.rb

@@ -13,12 +13,11 @@ def execute_powershell(connection, script)
 
       def run_powershell_script(connection, script)
         log_header = "MIQ(#{self.class.name}.#{__method__})"
-        script_string = IO.read(script)
         results = []
 
         begin
           with_winrm_shell(connection) do |shell|
-            results = shell.run(script_string)
+            results = shell.run(script)
             log_dos_error_results(results.stderr)
           end
         rescue Errno::ECONNREFUSED => err
@@ -119,8 +118,7 @@ def run_powershell_script(script)
 
       _result, timings = Benchmark.realtime_block(:execution) do
         with_winrm_shell do |shell|
-          script_string = IO.read(script)
-          results = shell.run(script_string)
+          results = shell.run(script)
           self.class.log_dos_error_results(results.stderr)
         end
       end

app/models/manageiq/providers/microsoft/infra_manager/refresh_parser.rb

@@ -20,7 +20,8 @@ def ems_inv_to_hashes
       log_header = "MIQ(#{self.class.name}.#{__method__}) Collecting data for EMS name: [#{@ems.name}] id: [#{@ems.id}]"
       $scvmm_log.info("#{log_header}...")
 
-      @inventory = ManageIQ::Providers::Microsoft::InfraManager.execute_powershell_json(@connection, INVENTORY_SCRIPT)
+      script = IO.read(INVENTORY_SCRIPT)
+      @inventory = ManageIQ::Providers::Microsoft::InfraManager.execute_powershell_json(@connection, script)
 
       if @inventory.empty?
         $scvmm_log.warn("#{log_header}...Empty inventory set returned from SCVMM.")

spec/models/manageiq/providers/microsoft/infra_manager/powershell_spec.rb

@@ -1,6 +1,16 @@
 describe ManageIQ::Providers::Microsoft::InfraManager::Powershell do
   before(:all) do
     class PowershellTemp; end
+    class Connection; end
+
+    class Shell
+      def close; end
+    end
+
+    class Results
+      def stdout; "stdout"; end
+      def stderr; "stderr"; end
+    end
   end
 
   before(:each) do
@@ -110,4 +120,45 @@ class PowershellTemp; end
       expect(powershell.parse_json_results(json).first).to be_kind_of(Hash)
     end
   end
+
+  context "run_powershell_script" do
+    before(:all) do
+      @connection = Connection.new
+      @shell = Shell.new
+      @results = Results.new
+    end
+
+    let(:connection) { @connection }
+    let(:shell) { @shell }
+    let(:results) { @results }
+    let(:tempfile) { @tempfile }
+
+    let(:ps_script) do
+      <<-PS_SCRIPT
+        Import-Module VirtualMachineManager | Out-Null; \
+        Get-SCVMMServer localhost | Out-Null;\
+
+        $vm = New-SCVirtualMachine \
+          -Name 'foo_test-1a' \
+          -VMHost some_host \
+          -Path 'C:\\foo\\bar' \
+          -VMTemplate some_template; \
+
+        $vm | Select-Object ID | ConvertTo-Json
+      PS_SCRIPT
+    end
+
+    it "requires two arguments" do
+      expect { powershell.run_powershell_script }.to raise_error(ArgumentError)
+      expect { powershell.run_powershell_script(connection) }.to raise_error(ArgumentError)
+    end
+
+    it "accepts a string argument for a script" do
+      allow(powershell).to receive(:with_winrm_connection).and_return(connection)
+      allow(connection).to receive(:shell).and_return(shell)
+      allow(shell).to receive(:run).and_return(results)
+
+      expect(powershell.run_powershell_script(connection, ps_script)).to eql("stdout")
+    end
+  end
 end