Emit warning if ConvertTo-Json exceeds -Depth value (#13692)

test/powershell/Modules/Microsoft.PowerShell.Security/SecureString.Tests.ps1

@@ -1,5 +1,9 @@
 # Copyright (c) Microsoft Corporation.
 # Licensed under the MIT License.
+
+[Diagnostics.CodeAnalysis.SuppressMessageAttribute('PSAvoidUsingConvertToSecureStringWithPlainText', '')]
+param()
+
 Describe "SecureString conversion tests" -Tags "CI" {
     BeforeAll {
         $string = "ABCD"
@@ -24,9 +28,8 @@ Describe "SecureString conversion tests" -Tags "CI" {
     }
 
     It "can convert back from a secure string" {
-        $secret = "abcd"
-        $ss1 = ConvertTo-SecureString -AsPlainText -Force $secret
+        $ss1 = ConvertTo-SecureString -AsPlainText -Force $string
         $ss2 = ConvertFrom-SecureString $ss1 | ConvertTo-SecureString
-        $ss2 | ConvertFrom-SecureString -AsPlainText | Should -Be $secret
+        $ss2 | ConvertFrom-SecureString -AsPlainText | Should -Be $string
     }
 }

test/powershell/Modules/Microsoft.PowerShell.Utility/Json.Tests.ps1

@@ -1463,4 +1463,11 @@ Describe "Json Bug fixes"  -Tags "Feature" {
         $result = "[1,","2,","3]" | ConvertFrom-Json
         $result.Count | Should -Be 3
     }
+
+    It 'ConvertTo-Json will output warning if depth is exceeded.' {
+        $a = @{ a = @{ b = @{ c = @{ d = 1 } } } }
+        $json = $a | ConvertTo-Json -Depth 2 -WarningVariable warningMessage -WarningAction SilentlyContinue
+        $json | Should -Not -BeNullOrEmpty
+        $warningMessage | Should -Not -BeNullOrEmpty
+    }
 }