add aliases to --what-if

Author: tgauth

dsc/src/args.rs

@@ -126,7 +126,7 @@ pub enum ConfigSubCommand {
         file: Option<String>,
         #[clap(short = 'o', long, help = t!("args.outputFormat").to_string())]
         output_format: Option<OutputFormat>,
-        #[clap(short = 'w', long, help = t!("args.whatIf").to_string())]
+        #[clap(short = 'w', long, visible_aliases = ["dry-run", "noop"], help = t!("args.whatIf").to_string())]
         what_if: bool,
     },
     #[clap(name = "test", about = t!("args.testAbout").to_string())]

dsc/tests/dsc_whatif.tests.ps1

@@ -88,7 +88,13 @@ Describe 'whatif tests' {
         $LASTEXITCODE | Should -Be 0
     }
 
-    It 'what-if execution of WhatIf resource' {
+    It 'what-if execution of WhatIf resource via <alias>' -TestCases @(
+        @{ alias = '-w' }
+        @{ alias = '--what-if' }
+        @{ alias = '--dry-run' }
+        @{ alias = '--noop' }
+    ) {
+        param($alias)
         $config_yaml = @"
         `$schema: https://aka.ms/dsc/schemas/v3/bundled/config/document.json
         resources:
@@ -97,7 +103,7 @@ Describe 'whatif tests' {
           properties:
             executionType: Actual
 "@
-        $result = $config_yaml | dsc config set -w -f - | ConvertFrom-Json
+        $result = $config_yaml | dsc config set $alias -f - | ConvertFrom-Json
         $result.metadata.'Microsoft.DSC'.executionType | Should -BeExactly 'whatIf'
         $result.results.result.afterState.executionType | Should -BeExactly 'WhatIf'
         $result.results.result.changedProperties | Should -BeExactly 'executionType'