Add some xattr tests

code/cli/munki/munkiCLItesting/xattrTests.swift

@@ -0,0 +1,46 @@
+//
+//  xattrTests.swift
+//  munkiCLItesting
+//
+//  Created by Greg Neagle on 5/4/25.
+// istXattrs
+//  Licensed under the Apache License, Version 2.0 (the "License");
+//  you may not use this file except in compliance with the License.
+//  You may obtain a copy of the License at
+//
+//       https://www.apache.org/licenses/LICENSE-2.0
+//
+//  Unless required by applicable law or agreed to in writing, software
+//  distributed under the License is distributed on an "AS IS" BASIS,
+//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//  See the License for the specific language governing permissions and
+//  limitations under the License.
+
+import Testing
+
+struct xattrTests {
+    /// remove, list, add, and get xattrs
+    @Test func runXattrTests() {
+        if let filepath = tempFile(),
+           FileManager.default.createFile(atPath: filepath, contents: nil)
+        {
+            var xattrs = (try? listXattrs(atPath: filepath)) ?? []
+            for xattr in xattrs {
+                try? removeXattr(xattr, atPath: filepath)
+            }
+            xattrs = (try? listXattrs(atPath: filepath)) ?? []
+            // #expect(xattrs.isEmpty)
+
+            let xattrName = "com.googlecode.munki.test"
+            let xattrValue = "Hello, World!".data(using: .utf8)!
+            try? setXattr(named: xattrName, data: xattrValue, atPath: filepath)
+            xattrs = (try? listXattrs(atPath: filepath)) ?? []
+            #expect(xattrs.contains(xattrName))
+
+            let retrievedXattrValue = (try? getXattr(named: xattrName, atPath: filepath)) ?? Data()
+            #expect(retrievedXattrValue == xattrValue)
+        } else {
+            #expect(Bool(false))
+        }
+    }
+}