Move testing knowledge from community to microsoft layer

Relocates the six P1+P2 testing-domain articles (18 files: .md + .good.al + .bad.al each) from community/knowledge/testing/ to microsoft/knowledge/testing/ per maintainer request. Pure git-mv rename; no content or frontmatter changes.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

microsoft/knowledge/testing/handlerfunctions-attribute-must-match-ui-path.good.al

@@ -0,0 +1,34 @@
+codeunit 50406 "Test Handler Match Good"
+{
+    Subtype = Test;
+
+    [Test]
+    [HandlerFunctions('ConfirmHandlerYes,PostMessageHandler')]
+    procedure PostWithConfirmAndMessage()
+    begin
+        // The path below raises BOTH a Confirm and a Message, and the
+        // attribute names exactly those two handlers — no more, no less.
+        RunPostingThatConfirmsAndMessages();
+    end;
+
+    local procedure RunPostingThatConfirmsAndMessages()
+    begin
+        if Confirm('Post this document?', false) then
+            Message('Posting completed.');
+    end;
+
+    [ConfirmHandler]
+    procedure ConfirmHandlerYes(Question: Text; var Reply: Boolean)
+    begin
+        Reply := true;
+    end;
+
+    [MessageHandler]
+    procedure PostMessageHandler(Message: Text)
+    begin
+        LibraryVariableStorage.Enqueue(Message);
+    end;
+
+    var
+        LibraryVariableStorage: Codeunit "Library - Variable Storage";
+}