A patch for a new test to exercise the Appcast parsing behavior in Sparkle for my failing updater.

sparkle-marconio-test.patch

diff --git a/Tests/SUAppcastTest.swift b/Tests/SUAppcastTest.swift
index a1e921db..336e959b 100644
--- a/Tests/SUAppcastTest.swift
+++ b/Tests/SUAppcastTest.swift
@@ -11,6 +11,27 @@ import Sparkle
 
 class SUAppcastTest: XCTestCase {
 
+    func testBrokenAppcast() {
+        let testURL = Bundle(for: SUAppcastTest.self).url(forResource: "marconio-broken-appcast", withExtension: "xml")!
+
+        do {
+            let testData = try Data(contentsOf: testURL)
+
+            let versionComparator = SUStandardVersionComparator.default
+            let hostVersion = "1.0"
+
+            let stateResolver = SPUAppcastItemStateResolver(hostVersion: hostVersion,
+                                                            applicationVersionComparator: versionComparator,
+                                                            standardVersionComparator: versionComparator)
+            let appcast = try SUAppcast(xmlData: testData, relativeTo: URL(string: "https://brianmichel.github.io/Marconio/appcast.xml")!, stateResolver: stateResolver)
+
+            XCTAssertNotNil(appcast)
+        } catch let err as NSError {
+            NSLog("%@", err)
+            XCTFail(err.localizedDescription)
+        }
+    }
+
     func testParseAppcast() {
         let testURL = Bundle(for: SUAppcastTest.self).url(forResource: "testappcast", withExtension: "xml")!