Add more tests

Tests/ZipTests/ZipTests.swift

@@ -334,6 +334,30 @@ final class ZipTests: XCTestCase {
         XCTAssertNil(zip)
     }
 
+    func testUnzipWithoutPassword() throws {
+        let imageURL1 = url(forResource: "3crBXeO", withExtension: "gif")!
+        let imageURL2 = url(forResource: "kYkLkPf", withExtension: "gif")!
+        let zipFilePath = try autoRemovingSandbox().appendingPathComponent("archive.zip")
+        try Zip.zipFiles(paths: [imageURL1, imageURL2], zipFilePath: zipFilePath, password: "password")
+        XCTAssertTrue(FileManager.default.fileExists(atPath: zipFilePath.path))
+        let directoryName = zipFilePath.lastPathComponent.replacingOccurrences(of: ".\(zipFilePath.pathExtension)", with: "")
+        let destinationUrl = try autoRemovingSandbox().appendingPathComponent(directoryName, isDirectory: true)
+        XCTAssertThrowsError(try Zip.unzipFile(zipFilePath, destination: destinationUrl))
+    }
+
+    func testFileHandler() throws {
+        let filePath = url(forResource: "bb8", withExtension: "zip")!
+        let destinationPath = try autoRemovingSandbox()
+
+        XCTAssertNoThrow(try Zip.unzipFile(filePath, destination: destinationPath, password: "password", fileOutputHandler: { fileURL in
+            XCTAssertTrue(FileManager.default.fileExists(atPath: fileURL.path))
+        }))
+
+        XCTAssertTrue(FileManager.default.fileExists(atPath: destinationPath.path))
+        try XCTAssertGreaterThan(Data(contentsOf: destinationPath.appendingPathComponent("3crBXeO.gif")).count, 0)
+        try XCTAssertGreaterThan(Data(contentsOf: destinationPath.appendingPathComponent("kYkLkPf.gif")).count, 0)
+    }
+
     // Tests if https://github.com/vapor-community/Zip/issues/4 does not occur anymore.
     func testRoundTripping() throws {
         // "prod-apple-swift-metrics-main-e6a00d36.zip" is the original zip file from the issue.