AzurePowerShellCredential no longer relies on APIs that are not available in Constrained Language Mode (Azure#47989)

Author: christothes

sdk/identity/Azure.Identity/CHANGELOG.md

@@ -11,6 +11,7 @@
 - Null or empty responses from IMDS probe attempts will now fall through to the next credential in the chain ([#47844](https://github.com/Azure/azure-sdk-for-net/issues/47844))
 
 ### Other Changes
+- `AzurePowerShellCredential` no longer relies on APIs that are not available in Constrained Language Mode.
 
 ## 1.13.2 (2025-01-14)
 

sdk/identity/Azure.Identity/src/Credentials/AzurePowerShellCredential.cs

@@ -274,7 +274,7 @@ private void GetFileNameAndArguments(string resource, string tenantId, out strin
 }} else {{
     $customToken | Add-Member -MemberType NoteProperty -Name Token -Value $token.Token
 }}
-$customToken | Add-Member -MemberType NoteProperty -Name ExpiresOn -Value $token.ExpiresOn.ToUnixTimeSeconds()
+$customToken | Add-Member -MemberType NoteProperty -Name ExpiresOn -Value $token.ExpiresOn.UtcDateTime.Ticks
 
 $x = $customToken | ConvertTo-Xml
 return $x.Objects.FirstChild.OuterXml
@@ -314,7 +314,7 @@ private static AccessToken DeserializeOutput(string output)
                         break;
 
                     case "ExpiresOn":
-                        expiresOn = DateTimeOffset.FromUnixTimeSeconds(long.Parse(e.Value));
+                        expiresOn = new DateTimeOffset(long.Parse(e.Value), TimeSpan.Zero);
                         break;
                 }
 

sdk/identity/Azure.Identity/tests/CredentialTestHelpers.cs

@@ -75,7 +75,7 @@ public static (string Token, DateTimeOffset ExpiresOn, string Json) CreateTokenF
         {
             var expiresOn = DateTimeOffset.FromUnixTimeSeconds(DateTimeOffset.UtcNow.Add(expiresOffset).ToUnixTimeSeconds());
             var token = TokenGenerator.GenerateToken(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), expiresOn.UtcDateTime);
-            var xml = @$"<Object Type=""System.Management.Automation.PSCustomObject""><Property Name=""Token"" Type=""System.String"">{token}</Property><Property Name=""ExpiresOn"" Type=""System.Int64"">{expiresOn.ToUnixTimeSeconds()}</Property></Object>";
+            var xml = @$"<Object Type=""System.Management.Automation.PSCustomObject""><Property Name=""Token"" Type=""System.String"">{token}</Property><Property Name=""ExpiresOn"" Type=""System.Int64"">{expiresOn.UtcDateTime.Ticks}</Property></Object>";
             return (token, expiresOn, xml);
         }