chore: import upstream snapshot with attribution

2026-07-13 12:06:18 +08:00
commit e84fb4a79e
474 changed files with 68321 additions and 0 deletions
@@ -0,0 +1,130 @@
+//===----------------------------------------------------------------------===//
+// Copyright © 2025-2026 Apple Inc. and the container project 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
+//
+//   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 ContainerizationExtras
+import Testing
+
+@testable import DNSServer
+
+struct StandardQueryValidatorTest {
+    @Test func testRejectResponseAsQuery() async throws {
+        let fooHandler = FooHandler()
+        let handler = StandardQueryValidator(handler: fooHandler)
+
+        let query = Message(
+            id: UInt16(1),
+            type: .response,
+            questions: [
+                Question(name: "foo.", type: .host)
+            ])
+
+        let response = try await handler.answer(query: query)
+
+        #expect(.formatError == response?.returnCode)
+        #expect(1 == response?.id)
+        #expect(.response == response?.type)
+        #expect(1 == response?.questions.count)
+        #expect("foo." == response?.questions[0].name)
+        #expect(.host == response?.questions[0].type)
+        #expect(0 == response?.answers.count)
+    }
+
+    @Test func testRejectNonQueryOperation() async throws {
+        let fooHandler = FooHandler()
+        let handler = StandardQueryValidator(handler: fooHandler)
+
+        let query = Message(
+            id: UInt16(2),
+            type: .query,
+            operationCode: .notify,
+            questions: [
+                Question(name: "foo.", type: .host)
+            ])
+
+        let response = try await handler.answer(query: query)
+
+        #expect(.notImplemented == response?.returnCode)
+        #expect(2 == response?.id)
+        #expect(.response == response?.type)
+        #expect(1 == response?.questions.count)
+        #expect("foo." == response?.questions[0].name)
+        #expect(.host == response?.questions[0].type)
+        #expect(0 == response?.answers.count)
+    }
+
+    @Test func testRejectNoQuestions() async throws {
+        let fooHandler = FooHandler()
+        let handler = StandardQueryValidator(handler: fooHandler)
+
+        let query = Message(id: UInt16(3), type: .query, questions: [])
+
+        let response = try await handler.answer(query: query)
+
+        #expect(.formatError == response?.returnCode)
+        #expect(3 == response?.id)
+        #expect(.response == response?.type)
+        #expect(0 == response?.answers.count)
+    }
+
+    @Test func testRejectMultipleQuestions() async throws {
+        let fooHandler = FooHandler()
+        let handler = StandardQueryValidator(handler: fooHandler)
+
+        let query = Message(
+            id: UInt16(2),
+            type: .query,
+            questions: [
+                Question(name: "foo.", type: .host),
+                Question(name: "bar.", type: .host),
+            ])
+
+        let response = try await handler.answer(query: query)
+
+        #expect(.formatError == response?.returnCode)
+        #expect(2 == response?.id)
+        #expect(.response == response?.type)
+        #expect(2 == response?.questions.count)
+        #expect("foo." == response?.questions[0].name)
+        #expect(.host == response?.questions[0].type)
+        #expect("bar." == response?.questions[1].name)
+        #expect(.host == response?.questions[1].type)
+        #expect(0 == response?.answers.count)
+    }
+
+    @Test func testSuccessfulValidation() async throws {
+        let fooHandler = FooHandler()
+        let handler = StandardQueryValidator(handler: fooHandler)
+
+        let query = Message(
+            id: UInt16(2),
+            type: .query,
+            questions: [
+                Question(name: "foo.", type: .host)
+            ])
+
+        let response = try await handler.answer(query: query)
+
+        #expect(.noError == response?.returnCode)
+        #expect(2 == response?.id)
+        #expect(.response == response?.type)
+        #expect(1 == response?.questions.count)
+        #expect("foo." == response?.questions[0].name)
+        #expect(.host == response?.questions[0].type)
+        #expect(1 == response?.answers.count)
+        let answer = response?.answers[0] as? HostRecord<IPv4Address>
+        #expect(try IPv4Address("1.2.3.4") == answer?.ip)
+    }
+}