allow deprecated tests to test deprecated functionality (#1271)

Motivation: It's important to also test deprecated functionliaty. One way of achieving this without warnings is to also deprecate the tests that test this deprecated functionality. Unfortunately, on Linux we need to generate lists of tests which would then reference deprecated tests (which gives us a warning). Modifications: Deprecate test suites and the main test runner all the way to the top so never get warnings. Result: Possible to test deprecated functionlity without warnings.
2019-11-27 14:26:51 +00:00 · 2019-11-27 14:26:51 +00:00 · c2c725044a
parent 302dee3e1a
commit c2c725044a
71 changed files with 178 additions and 75 deletions
--- a/Tests/LinuxMain.swift
+++ b/Tests/LinuxMain.swift
@ -31,76 +31,87 @@ import XCTest
   @testable import NIOTests
   @testable import NIOWebSocketTests

-   XCTMain([
-         testCase(AcceptBackoffHandlerTest.allTests),
-         testCase(AdaptiveRecvByteBufferAllocatorTest.allTests),
-         testCase(ApplicationProtocolNegotiationHandlerTests.allTests),
-         testCase(Base64Test.allTests),
-         testCase(BaseObjectTest.allTests),
-         testCase(BlockingIOThreadPoolTest.allTests),
-         testCase(BootstrapTest.allTests),
-         testCase(ByteBufferTest.allTests),
-         testCase(ByteBufferUtilsTest.allTests),
-         testCase(ByteToMessageDecoderTest.allTests),
-         testCase(ByteToMessageDecoderVerifierTest.allTests),
-         testCase(ChannelNotificationTest.allTests),
-         testCase(ChannelOptionStorageTest.allTests),
-         testCase(ChannelPipelineTest.allTests),
-         testCase(ChannelTests.allTests),
-         testCase(CircularBufferTests.allTests),
-         testCase(CodableByteBufferTest.allTests),
-         testCase(CustomChannelTests.allTests),
-         testCase(DatagramChannelTests.allTests),
-         testCase(EchoServerClientTest.allTests),
-         testCase(EmbeddedChannelTest.allTests),
-         testCase(EmbeddedEventLoopTest.allTests),
-         testCase(EventCounterHandlerTest.allTests),
-         testCase(EventLoopFutureTest.allTests),
-         testCase(EventLoopTest.allTests),
-         testCase(FileRegionTest.allTests),
-         testCase(GetaddrinfoResolverTest.allTests),
-         testCase(HTTPClientUpgradeTestCase.allTests),
-         testCase(HTTPDecoderLengthTest.allTests),
-         testCase(HTTPDecoderTest.allTests),
-         testCase(HTTPHeadersTest.allTests),
-         testCase(HTTPRequestEncoderTests.allTests),
-         testCase(HTTPResponseEncoderTests.allTests),
-         testCase(HTTPResponseStatusTests.allTests),
-         testCase(HTTPServerClientTest.allTests),
-         testCase(HTTPServerPipelineHandlerTest.allTests),
-         testCase(HTTPServerProtocolErrorHandlerTest.allTests),
-         testCase(HTTPServerUpgradeTestCase.allTests),
-         testCase(HTTPTest.allTests),
-         testCase(HTTPTypesTest.allTests),
-         testCase(HappyEyeballsTest.allTests),
-         testCase(HeapTests.allTests),
-         testCase(IdleStateHandlerTest.allTests),
-         testCase(IntegerTypesTest.allTests),
-         testCase(MarkedCircularBufferTests.allTests),
-         testCase(MessageToByteEncoderTest.allTests),
-         testCase(MessageToByteHandlerTest.allTests),
-         testCase(MulticastTest.allTests),
-         testCase(NIOAnyDebugTest.allTests),
-         testCase(NIOCloseOnErrorHandlerTest.allTests),
-         testCase(NIOConcurrencyHelpersTests.allTests),
-         testCase(NIOHTTP1TestServerTest.allTests),
-         testCase(NonBlockingFileIOTest.allTests),
-         testCase(PendingDatagramWritesManagerTests.allTests),
-         testCase(PipeChannelTest.allTests),
-         testCase(PriorityQueueTest.allTests),
-         testCase(SNIHandlerTest.allTests),
-         testCase(SelectorTest.allTests),
-         testCase(SocketAddressTest.allTests),
-         testCase(SocketChannelTest.allTests),
-         testCase(SocketOptionProviderTest.allTests),
-         testCase(StreamChannelTest.allTests),
-         testCase(SystemTest.allTests),
-         testCase(ThreadTest.allTests),
-         testCase(TypeAssistedChannelHandlerTest.allTests),
-         testCase(UtilitiesTest.allTests),
-         testCase(WebSocketClientEndToEndTests.allTests),
-         testCase(WebSocketFrameDecoderTest.allTests),
-         testCase(WebSocketFrameEncoderTest.allTests),
-         testCase(WebSocketServerEndToEndTests.allTests),
-    ])
+// This protocol is necessary to we can call the 'run' method (on an existential of this protocol)
+// without the compiler noticing that we're calling a deprecated function.
+// This hack exists so we can deprecate individual tests which test deprecated functionality without
+// getting a compiler warning...
+protocol LinuxMainRunner { func run() }
+class LinuxMainRunnerImpl: LinuxMainRunner {
+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
+   func run() {
+       XCTMain([
+             testCase(AcceptBackoffHandlerTest.allTests),
+             testCase(AdaptiveRecvByteBufferAllocatorTest.allTests),
+             testCase(ApplicationProtocolNegotiationHandlerTests.allTests),
+             testCase(Base64Test.allTests),
+             testCase(BaseObjectTest.allTests),
+             testCase(BlockingIOThreadPoolTest.allTests),
+             testCase(BootstrapTest.allTests),
+             testCase(ByteBufferTest.allTests),
+             testCase(ByteBufferUtilsTest.allTests),
+             testCase(ByteToMessageDecoderTest.allTests),
+             testCase(ByteToMessageDecoderVerifierTest.allTests),
+             testCase(ChannelNotificationTest.allTests),
+             testCase(ChannelOptionStorageTest.allTests),
+             testCase(ChannelPipelineTest.allTests),
+             testCase(ChannelTests.allTests),
+             testCase(CircularBufferTests.allTests),
+             testCase(CodableByteBufferTest.allTests),
+             testCase(CustomChannelTests.allTests),
+             testCase(DatagramChannelTests.allTests),
+             testCase(EchoServerClientTest.allTests),
+             testCase(EmbeddedChannelTest.allTests),
+             testCase(EmbeddedEventLoopTest.allTests),
+             testCase(EventCounterHandlerTest.allTests),
+             testCase(EventLoopFutureTest.allTests),
+             testCase(EventLoopTest.allTests),
+             testCase(FileRegionTest.allTests),
+             testCase(GetaddrinfoResolverTest.allTests),
+             testCase(HTTPClientUpgradeTestCase.allTests),
+             testCase(HTTPDecoderLengthTest.allTests),
+             testCase(HTTPDecoderTest.allTests),
+             testCase(HTTPHeadersTest.allTests),
+             testCase(HTTPRequestEncoderTests.allTests),
+             testCase(HTTPResponseEncoderTests.allTests),
+             testCase(HTTPResponseStatusTests.allTests),
+             testCase(HTTPServerClientTest.allTests),
+             testCase(HTTPServerPipelineHandlerTest.allTests),
+             testCase(HTTPServerProtocolErrorHandlerTest.allTests),
+             testCase(HTTPServerUpgradeTestCase.allTests),
+             testCase(HTTPTest.allTests),
+             testCase(HTTPTypesTest.allTests),
+             testCase(HappyEyeballsTest.allTests),
+             testCase(HeapTests.allTests),
+             testCase(IdleStateHandlerTest.allTests),
+             testCase(IntegerTypesTest.allTests),
+             testCase(MarkedCircularBufferTests.allTests),
+             testCase(MessageToByteEncoderTest.allTests),
+             testCase(MessageToByteHandlerTest.allTests),
+             testCase(MulticastTest.allTests),
+             testCase(NIOAnyDebugTest.allTests),
+             testCase(NIOCloseOnErrorHandlerTest.allTests),
+             testCase(NIOConcurrencyHelpersTests.allTests),
+             testCase(NIOHTTP1TestServerTest.allTests),
+             testCase(NonBlockingFileIOTest.allTests),
+             testCase(PendingDatagramWritesManagerTests.allTests),
+             testCase(PipeChannelTest.allTests),
+             testCase(PriorityQueueTest.allTests),
+             testCase(SNIHandlerTest.allTests),
+             testCase(SelectorTest.allTests),
+             testCase(SocketAddressTest.allTests),
+             testCase(SocketChannelTest.allTests),
+             testCase(SocketOptionProviderTest.allTests),
+             testCase(StreamChannelTest.allTests),
+             testCase(SystemTest.allTests),
+             testCase(ThreadTest.allTests),
+             testCase(TypeAssistedChannelHandlerTest.allTests),
+             testCase(UtilitiesTest.allTests),
+             testCase(WebSocketClientEndToEndTests.allTests),
+             testCase(WebSocketFrameDecoderTest.allTests),
+             testCase(WebSocketFrameEncoderTest.allTests),
+             testCase(WebSocketServerEndToEndTests.allTests),
+        ])
+    }
+}
+(LinuxMainRunnerImpl() as LinuxMainRunner).run()
 #endif
--- a/Tests/NIOConcurrencyHelpersTests/NIOConcurrencyHelpersTests+XCTest.swift
+++ b/Tests/NIOConcurrencyHelpersTests/NIOConcurrencyHelpersTests+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension NIOConcurrencyHelpersTests {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (NIOConcurrencyHelpersTests) -> () throws -> Void)] {
      return [
                ("testLargeContendedAtomicSum", testLargeContendedAtomicSum),
--- a/Tests/NIOFoundationCompatTests/Codable+ByteBufferTest+XCTest.swift
+++ b/Tests/NIOFoundationCompatTests/Codable+ByteBufferTest+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension CodableByteBufferTest {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (CodableByteBufferTest) -> () throws -> Void)] {
      return [
                ("testSimpleDecode", testSimpleDecode),
--- a/Tests/NIOHTTP1Tests/ByteBufferUtilsTest+XCTest.swift
+++ b/Tests/NIOHTTP1Tests/ByteBufferUtilsTest+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension ByteBufferUtilsTest {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (ByteBufferUtilsTest) -> () throws -> Void)] {
      return [
                ("testComparators", testComparators),
--- a/Tests/NIOHTTP1Tests/HTTPClientUpgradeTests+XCTest.swift
+++ b/Tests/NIOHTTP1Tests/HTTPClientUpgradeTests+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension HTTPClientUpgradeTestCase {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (HTTPClientUpgradeTestCase) -> () throws -> Void)] {
      return [
                ("testSimpleUpgradeSucceeds", testSimpleUpgradeSucceeds),
--- a/Tests/NIOHTTP1Tests/HTTPDecoderLengthTest+XCTest.swift
+++ b/Tests/NIOHTTP1Tests/HTTPDecoderLengthTest+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension HTTPDecoderLengthTest {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (HTTPDecoderLengthTest) -> () throws -> Void)] {
      return [
                ("testHTTP11SemanticEOFOnChannelInactive", testHTTP11SemanticEOFOnChannelInactive),
--- a/Tests/NIOHTTP1Tests/HTTPDecoderTest+XCTest.swift
+++ b/Tests/NIOHTTP1Tests/HTTPDecoderTest+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension HTTPDecoderTest {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (HTTPDecoderTest) -> () throws -> Void)] {
      return [
                ("testDoesNotDecodeRealHTTP09Request", testDoesNotDecodeRealHTTP09Request),
--- a/Tests/NIOHTTP1Tests/HTTPHeadersTest+XCTest.swift
+++ b/Tests/NIOHTTP1Tests/HTTPHeadersTest+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension HTTPHeadersTest {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (HTTPHeadersTest) -> () throws -> Void)] {
      return [
                ("testCasePreservedButInsensitiveLookup", testCasePreservedButInsensitiveLookup),
--- a/Tests/NIOHTTP1Tests/HTTPRequestEncoderTest+XCTest.swift
+++ b/Tests/NIOHTTP1Tests/HTTPRequestEncoderTest+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension HTTPRequestEncoderTests {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (HTTPRequestEncoderTests) -> () throws -> Void)] {
      return [
                ("testNoAutoHeadersForHEAD", testNoAutoHeadersForHEAD),
--- a/Tests/NIOHTTP1Tests/HTTPResponseEncoderTest+XCTest.swift
+++ b/Tests/NIOHTTP1Tests/HTTPResponseEncoderTest+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension HTTPResponseEncoderTests {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (HTTPResponseEncoderTests) -> () throws -> Void)] {
      return [
                ("testNoAutoHeadersFor101", testNoAutoHeadersFor101),
--- a/Tests/NIOHTTP1Tests/HTTPResponseStatusTests+XCTest.swift
+++ b/Tests/NIOHTTP1Tests/HTTPResponseStatusTests+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension HTTPResponseStatusTests {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (HTTPResponseStatusTests) -> () throws -> Void)] {
      return [
                ("testHTTPResponseStatusFromStatusCode", testHTTPResponseStatusFromStatusCode),
--- a/Tests/NIOHTTP1Tests/HTTPServerClientTest+XCTest.swift
+++ b/Tests/NIOHTTP1Tests/HTTPServerClientTest+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension HTTPServerClientTest {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (HTTPServerClientTest) -> () throws -> Void)] {
      return [
                ("testSimpleGetByteBuffer", testSimpleGetByteBuffer),
--- a/Tests/NIOHTTP1Tests/HTTPServerPipelineHandlerTest+XCTest.swift
+++ b/Tests/NIOHTTP1Tests/HTTPServerPipelineHandlerTest+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension HTTPServerPipelineHandlerTest {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (HTTPServerPipelineHandlerTest) -> () throws -> Void)] {
      return [
                ("testBasicBufferingBehaviour", testBasicBufferingBehaviour),
--- a/Tests/NIOHTTP1Tests/HTTPServerProtocolErrorHandlerTest+XCTest.swift
+++ b/Tests/NIOHTTP1Tests/HTTPServerProtocolErrorHandlerTest+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension HTTPServerProtocolErrorHandlerTest {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (HTTPServerProtocolErrorHandlerTest) -> () throws -> Void)] {
      return [
                ("testHandlesBasicErrors", testHandlesBasicErrors),
--- a/Tests/NIOHTTP1Tests/HTTPServerUpgradeTests+XCTest.swift
+++ b/Tests/NIOHTTP1Tests/HTTPServerUpgradeTests+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension HTTPServerUpgradeTestCase {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (HTTPServerUpgradeTestCase) -> () throws -> Void)] {
      return [
                ("testUpgradeWithoutUpgrade", testUpgradeWithoutUpgrade),
--- a/Tests/NIOHTTP1Tests/HTTPTest+XCTest.swift
+++ b/Tests/NIOHTTP1Tests/HTTPTest+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension HTTPTest {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (HTTPTest) -> () throws -> Void)] {
      return [
                ("testHTTPSimpleNoHeaders", testHTTPSimpleNoHeaders),
--- a/Tests/NIOHTTP1Tests/HTTPTypesTest+XCTest.swift
+++ b/Tests/NIOHTTP1Tests/HTTPTypesTest+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension HTTPTypesTest {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (HTTPTypesTest) -> () throws -> Void)] {
      return [
                ("testConvertToString", testConvertToString),
--- a/Tests/NIOTLSTests/ApplicationProtocolNegotiationHandlerTests+XCTest.swift
+++ b/Tests/NIOTLSTests/ApplicationProtocolNegotiationHandlerTests+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension ApplicationProtocolNegotiationHandlerTests {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (ApplicationProtocolNegotiationHandlerTests) -> () throws -> Void)] {
      return [
                ("testChannelProvidedToCallback", testChannelProvidedToCallback),
--- a/Tests/NIOTLSTests/SNIHandlerTests+XCTest.swift
+++ b/Tests/NIOTLSTests/SNIHandlerTests+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension SNIHandlerTest {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (SNIHandlerTest) -> () throws -> Void)] {
      return [
                ("testLibre227NoSNIDripFeed", testLibre227NoSNIDripFeed),
--- a/Tests/NIOTestUtilsTests/ByteToMessageDecoderVerifierTest+XCTest.swift
+++ b/Tests/NIOTestUtilsTests/ByteToMessageDecoderVerifierTest+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension ByteToMessageDecoderVerifierTest {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (ByteToMessageDecoderVerifierTest) -> () throws -> Void)] {
      return [
                ("testWrongResults", testWrongResults),
--- a/Tests/NIOTestUtilsTests/EventCounterHandlerTest+XCTest.swift
+++ b/Tests/NIOTestUtilsTests/EventCounterHandlerTest+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension EventCounterHandlerTest {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (EventCounterHandlerTest) -> () throws -> Void)] {
      return [
                ("testNothingButEmbeddedChannelInit", testNothingButEmbeddedChannelInit),
--- a/Tests/NIOTestUtilsTests/NIOHTTP1TestServerTest+XCTest.swift
+++ b/Tests/NIOTestUtilsTests/NIOHTTP1TestServerTest+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension NIOHTTP1TestServerTest {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (NIOHTTP1TestServerTest) -> () throws -> Void)] {
      return [
                ("testTheExampleInTheDocs", testTheExampleInTheDocs),
--- a/Tests/NIOTests/AcceptBackoffHandlerTest+XCTest.swift
+++ b/Tests/NIOTests/AcceptBackoffHandlerTest+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension AcceptBackoffHandlerTest {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (AcceptBackoffHandlerTest) -> () throws -> Void)] {
      return [
                ("testECONNABORTED", testECONNABORTED),
--- a/Tests/NIOTests/BaseObjectsTest+XCTest.swift
+++ b/Tests/NIOTests/BaseObjectsTest+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension BaseObjectTest {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (BaseObjectTest) -> () throws -> Void)] {
      return [
                ("testNIOByteBufferConversion", testNIOByteBufferConversion),
--- a/Tests/NIOTests/BlockingIOThreadPoolTest+XCTest.swift
+++ b/Tests/NIOTests/BlockingIOThreadPoolTest+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension BlockingIOThreadPoolTest {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (BlockingIOThreadPoolTest) -> () throws -> Void)] {
      return [
                ("testDoubleShutdownWorks", testDoubleShutdownWorks),
--- a/Tests/NIOTests/BootstrapTest+XCTest.swift
+++ b/Tests/NIOTests/BootstrapTest+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension BootstrapTest {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (BootstrapTest) -> () throws -> Void)] {
      return [
                ("testBootstrapsCallInitializersOnCorrectEventLoop", testBootstrapsCallInitializersOnCorrectEventLoop),
--- a/Tests/NIOTests/ByteBufferTest+XCTest.swift
+++ b/Tests/NIOTests/ByteBufferTest+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension ByteBufferTest {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (ByteBufferTest) -> () throws -> Void)] {
      return [
                ("testAllocateAndCount", testAllocateAndCount),
@ -173,6 +174,7 @@ extension ByteBufferTest {
                ("testByteBufferAllocatorSize1Capacity", testByteBufferAllocatorSize1Capacity),
                ("testByteBufferModifiedWithoutAllocationLogic", testByteBufferModifiedWithoutAllocationLogic),
                ("testByteBufferModifyIfUniquelyOwnedMayThrow", testByteBufferModifyIfUniquelyOwnedMayThrow),
+                ("testDeprecatedSetBytes", testDeprecatedSetBytes),
           ]
   }
 }
--- a/Tests/NIOTests/ByteBufferTest.swift
+++ b/Tests/NIOTests/ByteBufferTest.swift
@ -2441,6 +2441,15 @@ class ByteBufferTest: XCTestCase {
            XCTAssertTrue(error is MyError)
        }
    }
+
+    @available(*, deprecated, message: "deprecated because it tests deprecated functionality")
+    func testDeprecatedSetBytes() {
+        self.buf.clear()
+        self.buf.writeString("hello")
+        self.buf.set(buffer: self.buf, at: 5)
+        self.buf.moveWriterIndex(forwardBy: 5)
+        XCTAssertEqual("hellohello", self.buf.readString(length: 10))
+    }
 }

 private enum AllocationExpectationState: Int {
--- a/Tests/NIOTests/ChannelNotificationTest+XCTest.swift
+++ b/Tests/NIOTests/ChannelNotificationTest+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension ChannelNotificationTest {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (ChannelNotificationTest) -> () throws -> Void)] {
      return [
                ("testNotificationOrder", testNotificationOrder),
--- a/Tests/NIOTests/ChannelOptionStorageTest+XCTest.swift
+++ b/Tests/NIOTests/ChannelOptionStorageTest+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension ChannelOptionStorageTest {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (ChannelOptionStorageTest) -> () throws -> Void)] {
      return [
                ("testWeStartWithNoOptions", testWeStartWithNoOptions),
--- a/Tests/NIOTests/ChannelPipelineTest+XCTest.swift
+++ b/Tests/NIOTests/ChannelPipelineTest+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension ChannelPipelineTest {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (ChannelPipelineTest) -> () throws -> Void)] {
      return [
                ("testGetHandler", testGetHandler),
--- a/Tests/NIOTests/ChannelTests+XCTest.swift
+++ b/Tests/NIOTests/ChannelTests+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension ChannelTests {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (ChannelTests) -> () throws -> Void)] {
      return [
                ("testBasicLifecycle", testBasicLifecycle),
--- a/Tests/NIOTests/CircularBufferTests+XCTest.swift
+++ b/Tests/NIOTests/CircularBufferTests+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension CircularBufferTests {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (CircularBufferTests) -> () throws -> Void)] {
      return [
                ("testTrivial", testTrivial),
--- a/Tests/NIOTests/CodecTest+XCTest.swift
+++ b/Tests/NIOTests/CodecTest+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension ByteToMessageDecoderTest {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (ByteToMessageDecoderTest) -> () throws -> Void)] {
      return [
                ("testDecoder", testDecoder),
@ -66,6 +67,7 @@ extension ByteToMessageDecoderTest {

 extension MessageToByteEncoderTest {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (MessageToByteEncoderTest) -> () throws -> Void)] {
      return [
                ("testEncoderOverrideAllocateOutBuffer", testEncoderOverrideAllocateOutBuffer),
@ -76,6 +78,7 @@ extension MessageToByteEncoderTest {

 extension MessageToByteHandlerTest {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (MessageToByteHandlerTest) -> () throws -> Void)] {
      return [
                ("testThrowingEncoderFailsPromises", testThrowingEncoderFailsPromises),
--- a/Tests/NIOTests/CustomChannelTests+XCTest.swift
+++ b/Tests/NIOTests/CustomChannelTests+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension CustomChannelTests {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (CustomChannelTests) -> () throws -> Void)] {
      return [
                ("testWritingIntToSpecialChannel", testWritingIntToSpecialChannel),
--- a/Tests/NIOTests/DatagramChannelTests+XCTest.swift
+++ b/Tests/NIOTests/DatagramChannelTests+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension DatagramChannelTests {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (DatagramChannelTests) -> () throws -> Void)] {
      return [
                ("testBasicChannelCommunication", testBasicChannelCommunication),
--- a/Tests/NIOTests/EchoServerClientTest+XCTest.swift
+++ b/Tests/NIOTests/EchoServerClientTest+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension EchoServerClientTest {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (EchoServerClientTest) -> () throws -> Void)] {
      return [
                ("testEcho", testEcho),
--- a/Tests/NIOTests/EmbeddedChannelTest+XCTest.swift
+++ b/Tests/NIOTests/EmbeddedChannelTest+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension EmbeddedChannelTest {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (EmbeddedChannelTest) -> () throws -> Void)] {
      return [
                ("testWriteOutboundByteBuffer", testWriteOutboundByteBuffer),
--- a/Tests/NIOTests/EmbeddedEventLoopTest+XCTest.swift
+++ b/Tests/NIOTests/EmbeddedEventLoopTest+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension EmbeddedEventLoopTest {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (EmbeddedEventLoopTest) -> () throws -> Void)] {
      return [
                ("testExecuteDoesNotImmediatelyRunTasks", testExecuteDoesNotImmediatelyRunTasks),
--- a/Tests/NIOTests/EventLoopFutureTest+XCTest.swift
+++ b/Tests/NIOTests/EventLoopFutureTest+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension EventLoopFutureTest {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (EventLoopFutureTest) -> () throws -> Void)] {
      return [
                ("testFutureFulfilledIfHasResult", testFutureFulfilledIfHasResult),
--- a/Tests/NIOTests/EventLoopTest+XCTest.swift
+++ b/Tests/NIOTests/EventLoopTest+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension EventLoopTest {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (EventLoopTest) -> () throws -> Void)] {
      return [
                ("testSchedule", testSchedule),
--- a/Tests/NIOTests/FileRegionTest+XCTest.swift
+++ b/Tests/NIOTests/FileRegionTest+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension FileRegionTest {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (FileRegionTest) -> () throws -> Void)] {
      return [
                ("testWriteFileRegion", testWriteFileRegion),
--- a/Tests/NIOTests/GetAddrInfoResolverTest+XCTest.swift
+++ b/Tests/NIOTests/GetAddrInfoResolverTest+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension GetaddrinfoResolverTest {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (GetaddrinfoResolverTest) -> () throws -> Void)] {
      return [
                ("testResolveNoDuplicatesV4", testResolveNoDuplicatesV4),
--- a/Tests/NIOTests/HappyEyeballsTest+XCTest.swift
+++ b/Tests/NIOTests/HappyEyeballsTest+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension HappyEyeballsTest {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (HappyEyeballsTest) -> () throws -> Void)] {
      return [
                ("testIPv4OnlyResolution", testIPv4OnlyResolution),
--- a/Tests/NIOTests/HeapTests+XCTest.swift
+++ b/Tests/NIOTests/HeapTests+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension HeapTests {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (HeapTests) -> () throws -> Void)] {
      return [
                ("testSimple", testSimple),
--- a/Tests/NIOTests/IdleStateHandlerTest+XCTest.swift
+++ b/Tests/NIOTests/IdleStateHandlerTest+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension IdleStateHandlerTest {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (IdleStateHandlerTest) -> () throws -> Void)] {
      return [
                ("testIdleRead", testIdleRead),
--- a/Tests/NIOTests/IntegerTypesTest+XCTest.swift
+++ b/Tests/NIOTests/IntegerTypesTest+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension IntegerTypesTest {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (IntegerTypesTest) -> () throws -> Void)] {
      return [
                ("testNextPowerOfOfTwoZero", testNextPowerOfOfTwoZero),
--- a/Tests/NIOTests/MarkedCircularBufferTests+XCTest.swift
+++ b/Tests/NIOTests/MarkedCircularBufferTests+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension MarkedCircularBufferTests {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (MarkedCircularBufferTests) -> () throws -> Void)] {
      return [
                ("testEmptyMark", testEmptyMark),
--- a/Tests/NIOTests/MulticastTest+XCTest.swift
+++ b/Tests/NIOTests/MulticastTest+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension MulticastTest {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (MulticastTest) -> () throws -> Void)] {
      return [
                ("testCanJoinBasicMulticastGroupIPv4", testCanJoinBasicMulticastGroupIPv4),
--- a/Tests/NIOTests/NIOAnyDebugTest+XCTest.swift
+++ b/Tests/NIOTests/NIOAnyDebugTest+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension NIOAnyDebugTest {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (NIOAnyDebugTest) -> () throws -> Void)] {
      return [
                ("testCustomStringConvertible", testCustomStringConvertible),
--- a/Tests/NIOTests/NIOCloseOnErrorHandlerTest+XCTest.swift
+++ b/Tests/NIOTests/NIOCloseOnErrorHandlerTest+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension NIOCloseOnErrorHandlerTest {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (NIOCloseOnErrorHandlerTest) -> () throws -> Void)] {
      return [
                ("testChannelCloseOnError", testChannelCloseOnError),
--- a/Tests/NIOTests/NonBlockingFileIOTest+XCTest.swift
+++ b/Tests/NIOTests/NonBlockingFileIOTest+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension NonBlockingFileIOTest {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (NonBlockingFileIOTest) -> () throws -> Void)] {
      return [
                ("testBasicFileIOWorks", testBasicFileIOWorks),
--- a/Tests/NIOTests/PendingDatagramWritesManagerTests+XCTest.swift
+++ b/Tests/NIOTests/PendingDatagramWritesManagerTests+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension PendingDatagramWritesManagerTests {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (PendingDatagramWritesManagerTests) -> () throws -> Void)] {
      return [
                ("testPendingWritesEmptyWritesWorkAndWeDontWriteUnflushedThings", testPendingWritesEmptyWritesWorkAndWeDontWriteUnflushedThings),
--- a/Tests/NIOTests/PipeChannelTest+XCTest.swift
+++ b/Tests/NIOTests/PipeChannelTest+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension PipeChannelTest {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (PipeChannelTest) -> () throws -> Void)] {
      return [
                ("testBasicIO", testBasicIO),
--- a/Tests/NIOTests/PriorityQueueTests+XCTest.swift
+++ b/Tests/NIOTests/PriorityQueueTests+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension PriorityQueueTest {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (PriorityQueueTest) -> () throws -> Void)] {
      return [
                ("testSomeStringsAsc", testSomeStringsAsc),
--- a/Tests/NIOTests/RecvByteBufAllocatorTest+XCTest.swift
+++ b/Tests/NIOTests/RecvByteBufAllocatorTest+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension AdaptiveRecvByteBufferAllocatorTest {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (AdaptiveRecvByteBufferAllocatorTest) -> () throws -> Void)] {
      return [
                ("testAdaptive", testAdaptive),
--- a/Tests/NIOTests/SelectorTest+XCTest.swift
+++ b/Tests/NIOTests/SelectorTest+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension SelectorTest {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (SelectorTest) -> () throws -> Void)] {
      return [
                ("testDeregisterWhileProcessingEvents", testDeregisterWhileProcessingEvents),
--- a/Tests/NIOTests/SocketAddressTest+XCTest.swift
+++ b/Tests/NIOTests/SocketAddressTest+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension SocketAddressTest {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (SocketAddressTest) -> () throws -> Void)] {
      return [
                ("testDescriptionWorks", testDescriptionWorks),
--- a/Tests/NIOTests/SocketChannelTest+XCTest.swift
+++ b/Tests/NIOTests/SocketChannelTest+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension SocketChannelTest {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (SocketChannelTest) -> () throws -> Void)] {
      return [
                ("testAsyncSetOption", testAsyncSetOption),
--- a/Tests/NIOTests/SocketOptionProviderTest+XCTest.swift
+++ b/Tests/NIOTests/SocketOptionProviderTest+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension SocketOptionProviderTest {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (SocketOptionProviderTest) -> () throws -> Void)] {
      return [
                ("testSettingAndGettingComplexSocketOption", testSettingAndGettingComplexSocketOption),
--- a/Tests/NIOTests/StreamChannelsTest+XCTest.swift
+++ b/Tests/NIOTests/StreamChannelsTest+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension StreamChannelTest {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (StreamChannelTest) -> () throws -> Void)] {
      return [
                ("testEchoBasic", testEchoBasic),
--- a/Tests/NIOTests/SystemTest+XCTest.swift
+++ b/Tests/NIOTests/SystemTest+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension SystemTest {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (SystemTest) -> () throws -> Void)] {
      return [
                ("testSystemCallWrapperPerformance", testSystemCallWrapperPerformance),
--- a/Tests/NIOTests/ThreadTest+XCTest.swift
+++ b/Tests/NIOTests/ThreadTest+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension ThreadTest {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (ThreadTest) -> () throws -> Void)] {
      return [
                ("testCurrentThreadWorks", testCurrentThreadWorks),
--- a/Tests/NIOTests/TypeAssistedChannelHandlerTests+XCTest.swift
+++ b/Tests/NIOTests/TypeAssistedChannelHandlerTests+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension TypeAssistedChannelHandlerTest {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (TypeAssistedChannelHandlerTest) -> () throws -> Void)] {
      return [
                ("testCanDefineBothInboundAndOutbound", testCanDefineBothInboundAndOutbound),
--- a/Tests/NIOTests/UtilitiesTest+XCTest.swift
+++ b/Tests/NIOTests/UtilitiesTest+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension UtilitiesTest {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (UtilitiesTest) -> () throws -> Void)] {
      return [
                ("testCoreCountWorks", testCoreCountWorks),
--- a/Tests/NIOWebSocketTests/Base64Test+XCTest.swift
+++ b/Tests/NIOWebSocketTests/Base64Test+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension Base64Test {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (Base64Test) -> () throws -> Void)] {
      return [
                ("testEncodeEmptyData", testEncodeEmptyData),
--- a/Tests/NIOWebSocketTests/WebSocketClientEndToEndTests+XCTest.swift
+++ b/Tests/NIOWebSocketTests/WebSocketClientEndToEndTests+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension WebSocketClientEndToEndTests {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (WebSocketClientEndToEndTests) -> () throws -> Void)] {
      return [
                ("testSimpleUpgradeSucceeds", testSimpleUpgradeSucceeds),
--- a/Tests/NIOWebSocketTests/WebSocketFrameDecoderTest+XCTest.swift
+++ b/Tests/NIOWebSocketTests/WebSocketFrameDecoderTest+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension WebSocketFrameDecoderTest {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (WebSocketFrameDecoderTest) -> () throws -> Void)] {
      return [
                ("testFramesWithoutBodies", testFramesWithoutBodies),
--- a/Tests/NIOWebSocketTests/WebSocketFrameEncoderTest+XCTest.swift
+++ b/Tests/NIOWebSocketTests/WebSocketFrameEncoderTest+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension WebSocketFrameEncoderTest {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (WebSocketFrameEncoderTest) -> () throws -> Void)] {
      return [
                ("testBasicFrameEncoding", testBasicFrameEncoding),
--- a/Tests/NIOWebSocketTests/WebSocketServerEndToEndTests+XCTest.swift
+++ b/Tests/NIOWebSocketTests/WebSocketServerEndToEndTests+XCTest.swift
@ -24,6 +24,7 @@ import XCTest

 extension WebSocketServerEndToEndTests {

+   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")
   static var allTests : [(String, (WebSocketServerEndToEndTests) -> () throws -> Void)] {
      return [
                ("testBasicUpgradeDance", testBasicUpgradeDance),
--- a/scripts/generate_linux_tests.rb
+++ b/scripts/generate_linux_tests.rb
@ -72,6 +72,7 @@ def createExtensionFile(fileName, classes)

    for classArray in classes
      file.write 'extension ' + classArray[0] + " {\n\n"
+      file.write '   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")' +"\n"
      file.write '   static var allTests : [(String, (' + classArray[0] + ") -> () throws -> Void)] {\n"
      file.write "      return [\n"

@ -99,7 +100,15 @@ def createLinuxMain(testsDirectory, allTestSubDirectories, files)
      file.write '   @testable import ' + testSubDirectory + "\n"
    end
    file.write "\n"
-    file.write "   XCTMain([\n"
+    file.write "// This protocol is necessary to we can call the 'run' method (on an existential of this protocol)\n"
+    file.write "// without the compiler noticing that we're calling a deprecated function.\n"
+    file.write "// This hack exists so we can deprecate individual tests which test deprecated functionality without\n"
+    file.write "// getting a compiler warning...\n"
+    file.write "protocol LinuxMainRunner { func run() }\n"
+    file.write "class LinuxMainRunnerImpl: LinuxMainRunner {\n"
+    file.write '   @available(*, deprecated, message: "not actually deprecated. Just deprecated to allow deprecated tests (which test deprecated functionality) without warnings")' + "\n"
+    file.write "   func run() {\n"
+    file.write "       XCTMain([\n"

    testCases = []
    for classes in files
@ -109,9 +118,12 @@ def createLinuxMain(testsDirectory, allTestSubDirectories, files)
    end

    for testCase in testCases.sort { |x, y| x <=> y }
-      file.write '         testCase(' + testCase + ".allTests),\n"
+      file.write '             testCase(' + testCase + ".allTests),\n"
    end
-    file.write "    ])\n"
+    file.write "        ])\n"
+    file.write "    }\n"
+    file.write "}\n"
+    file.write "(LinuxMainRunnerImpl() as LinuxMainRunner).run()\n"
    file.write "#endif\n"
  end
 end