Fix Should-Throw to handle expected message with escaped wildcard

src/functions/assert/Exception/Should-Throw.ps1

@@ -25,6 +25,7 @@ function Should-Throw {
     ```powershell
     { throw 'error' } | Should-Throw
     { throw 'error' } | Should-Throw -ExceptionMessage 'error'
+    { throw 'wildcard character []' } | Should-Throw -ExceptionMessage '*character `[`]'
     { throw 'error' } | Should-Throw -ExceptionType 'System.Management.Automation.RuntimeException'
     { throw 'error' } | Should-Throw -FullyQualifiedErrorId 'RuntimeException'
     { throw 'error' } | Should-Throw -FullyQualifiedErrorId '*Exception'
@@ -100,7 +101,7 @@ function Should-Throw {
 
     $filterOnMessage = -not ([string]::IsNullOrWhiteSpace($ExceptionMessage))
     if ($filterOnMessage) {
-        $filters += "with message '$ExceptionMessage'"
+        $filters += "with message like '$([System.Management.Automation.WildcardPattern]::Unescape($ExceptionMessage))'"
         if ($err.ExceptionMessage -notlike $ExceptionMessage) {
             $buts += "the message was '$($err.ExceptionMessage)'"
         }

tst/functions/assert/Exception/Should-Throw.Tests.ps1

@@ -53,6 +53,10 @@ Describe "Should-Throw" {
         It "Fails when exception does not match the message with wildcard" {
             { { throw [ArgumentException]"A is null!" } | Should-Throw -ExceptionMessage '*flabbergasted*' } | Verify-AssertionFailed
         }
+
+        It "Passes when exception match the message with escaped wildcard" {
+            { throw [ArgumentException]"[]" } | Should-Throw -ExceptionMessage '`[`]'
+        }
     }
 
     Context "Filtering with FullyQualifiedErrorId" {
@@ -113,6 +117,11 @@ Describe "Should-Throw" {
             $err = { { throw [ArgumentException]"halt!" } | Should-Throw -ExceptionType ([System.InvalidOperationException]) -ExceptionMessage 'fail!'  -FullyQualifiedErrorId 'fail!' } | Verify-AssertionFailed
             $err.Exception.Message | Verify-Equal "Expected an exception, of type [InvalidOperationException], with message 'fail!' and with FullyQualifiedErrorId 'fail!' to be thrown, but the exception type was [ArgumentException], the message was 'halt!' and the FullyQualifiedErrorId was 'halt!'."
         }
+
+        It "Given exception that does not match on a message with escaped wildcard it returns the correct message" {
+            $err = { { throw [ArgumentException]"[!]" } | Should-Throw -ExceptionMessage '`[`]' } | Verify-AssertionFailed
+            $err.Exception.Message | Verify-Equal "Expected an exception, with message like '[]' to be thrown, but the message was '[!]'."
+        }
     }
 
     Context "Unwrapping exception from different sources" {