fixing test cases

provisioner/powershell/provisioner_test.go

@@ -537,7 +537,7 @@ func TestProvisionerProvision_Scripts(t *testing.T) {
 	}
 
 	cmd := comm.StartCmd.Command
-	re := regexp.MustCompile(`powershell -executionpolicy bypass -file c:/Windows/Temp/script.ps1`)
+	re := regexp.MustCompile(`powershell -executionpolicy bypass "& { if \(Test-Path variable:global:ProgressPreference\){set-variable -name variable:global:ProgressPreference -value 'SilentlyContinue'};\. c:/Windows/Temp/packer-ps-env-vars-[[:alnum:]]{8}-[[:alnum:]]{4}-[[:alnum:]]{4}-[[:alnum:]]{4}-[[:alnum:]]{12}\.ps1; &'c:/Windows/Temp/script.ps1'; exit \$LastExitCode }"`)
 	matched := re.MatchString(cmd)
 	if !matched {
 		t.Fatalf("Got unexpected command: %s", cmd)
@@ -574,7 +574,7 @@ func TestProvisionerProvision_ScriptsWithEnvVars(t *testing.T) {
 	}
 
 	cmd := comm.StartCmd.Command
-	re := regexp.MustCompile(`powershell -executionpolicy bypass -file c:/Windows/Temp/script.ps1`)
+	re := regexp.MustCompile(`powershell -executionpolicy bypass "& { if \(Test-Path variable:global:ProgressPreference\){set-variable -name variable:global:ProgressPreference -value 'SilentlyContinue'};\. c:/Windows/Temp/packer-ps-env-vars-[[:alnum:]]{8}-[[:alnum:]]{4}-[[:alnum:]]{4}-[[:alnum:]]{4}-[[:alnum:]]{12}\.ps1; &'c:/Windows/Temp/script.ps1'; exit \$LastExitCode }"`)
 	matched := re.MatchString(cmd)
 	if !matched {
 		t.Fatalf("Got unexpected command: %s", cmd)
@@ -599,11 +599,11 @@ func TestProvisionerProvision_SkipClean(t *testing.T) {
 	}{
 		{
 			SkipClean:                true,
-			LastExecutedCommandRegex: `powershell -executionpolicy bypass -file c:/Windows/Temp/script.ps1`,
+			LastExecutedCommandRegex: `powershell -executionpolicy bypass "& { if \(Test-Path variable:global:ProgressPreference\){set-variable -name variable:global:ProgressPreference -value 'SilentlyContinue'};\. c:/Windows/Temp/packer-ps-env-vars-[[:alnum:]]{8}-[[:alnum:]]{4}-[[:alnum:]]{4}-[[:alnum:]]{4}-[[:alnum:]]{12}\.ps1; &'c:/Windows/Temp/script.ps1'; exit \$LastExitCode }"`,
 		},
 		{
 			SkipClean:                false,
-			LastExecutedCommandRegex: `powershell -executionpolicy bypass -file c:/Windows/Temp/packer-cleanup-[[:alnum:]]{8}-[[:alnum:]]{4}-[[:alnum:]]{4}-[[:alnum:]]{4}-[[:alnum:]]{12}\.ps1`,
+			LastExecutedCommandRegex: `powershell -executionpolicy bypass "& { if \(Test-Path variable:global:ProgressPreference\){set-variable -name variable:global:ProgressPreference -value 'SilentlyContinue'};\. c:/Windows/Temp/packer-ps-env-vars-[[:alnum:]]{8}-[[:alnum:]]{4}-[[:alnum:]]{4}-[[:alnum:]]{4}-[[:alnum:]]{12}\.ps1; &'c:/Windows/Temp/packer-cleanup-[[:alnum:]]{8}-[[:alnum:]]{4}-[[:alnum:]]{4}-[[:alnum:]]{4}-[[:alnum:]]{12}\.ps1'; exit \$LastExitCode }"`,
 		},
 	}