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Tests/NatsTests/Unit/NatsClientOptionsTests.swift

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+// Copyright 2024 The NATS Authors
+// 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
+//
+// http://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 XCTest
+
+@testable import Nats
+
+class NatsClientOptionsTests: XCTestCase {
+    static var allTests = [
+        ("testDefaultInboxPrefix", testDefaultInboxPrefix),
+        ("testCustomInboxPrefix", testCustomInboxPrefix),
+    ]
+
+    func testDefaultInboxPrefix() {
+        let client = NatsClientOptions().build()
+        let inbox = client.newInbox()
+        XCTAssertTrue(inbox.hasPrefix("_INBOX."), "Default inbox prefix should be '_INBOX.'")
+        XCTAssertEqual(inbox.count, "_INBOX.".count + 22, "Inbox should have prefix plus NUID")
+    }
+
+    func testCustomInboxPrefix() {
+        let customPrefix = "_INBOX_abc123."
+        let client = NatsClientOptions().inboxPrefix(customPrefix).build()
+        let inbox = client.newInbox()
+        XCTAssertTrue(inbox.hasPrefix(customPrefix), "Inbox should use custom prefix")
+        XCTAssertEqual(
+            inbox.count, customPrefix.count + 22, "Inbox should have custom prefix plus NUID")
+    }
+}