diff --git a/.chronus/changes/deprecate-old-testing-framework-2026-6-11.md b/.chronus/changes/deprecate-old-testing-framework-2026-6-11.md
new file mode 100644
index 00000000000..3e41a64840a
--- /dev/null
+++ b/.chronus/changes/deprecate-old-testing-framework-2026-6-11.md
@@ -0,0 +1,23 @@
+---
+changeKind: deprecation
+packages:
+  - "@typespec/compiler"
+  - "@typespec/http"
+  - "@typespec/rest"
+  - "@typespec/versioning"
+  - "@typespec/json-schema"
+  - "@typespec/xml"
+  - "@typespec/events"
+  - "@typespec/sse"
+  - "@typespec/streams"
+  - "@typespec/html-program-viewer"
+  - "@typespec/library-linter"
+  - "@typespec/emitter-framework"
+  - "@typespec/http-client-js"
+  - "@typespec/http-client"
+  - "@typespec/http-server-js"
+  - "@typespec/openapi"
+  - "@typespec/openapi3"
+---
+
+Deprecate old testing framework (`createTestHost`, `createTestRunner`, `createTestWrapper`, `createTestLibrary`, `BasicTestRunner`, `TypeSpecTestLibrary`, etc.). Use `createTester` from `@typespec/compiler/testing` instead.
diff --git a/packages/compiler/src/testing/code-fix-testing.ts b/packages/compiler/src/testing/code-fix-testing.ts
index c8bd7bdd4ec..a7d294bd3cb 100644
--- a/packages/compiler/src/testing/code-fix-testing.ts
+++ b/packages/compiler/src/testing/code-fix-testing.ts
@@ -48,6 +48,7 @@ export function expectCodeFixOnAst(code: string, callback: (node: Node) => CodeF
     const node = getNodeAtPosition(script, pos);
     ok(node, "Expected node at cursor. Make sure to have ┆ to mark which node.");
     const codefix = callback(node);
+    // eslint-disable-next-line @typescript-eslint/no-deprecated
     const host = await createTestHost();
     let updatedContent: string | undefined;
     await applyCodeFix(
@@ -90,6 +91,7 @@ export function expectCodeFixesOnAst(
     }
     ok(diagnostics.length > 0, "Expected node at cursor. Make sure to have ┆ to mark which node.");
     const codeFixes = callback(diagnostics);
+    // eslint-disable-next-line @typescript-eslint/no-deprecated
     const host = await createTestHost();
     let updatedContent: string | undefined;
     await applyCodeFixes(
diff --git a/packages/compiler/src/testing/fs.ts b/packages/compiler/src/testing/fs.ts
index 73a4c6f3bfb..42b83e2302b 100644
--- a/packages/compiler/src/testing/fs.ts
+++ b/packages/compiler/src/testing/fs.ts
@@ -123,6 +123,7 @@ function createTestFileSystemInternal(
     jsImports.set(key, exports);
   }
 
+  // eslint-disable-next-line @typescript-eslint/no-deprecated
   async function addTypeSpecLibrary(testLibrary: TypeSpecTestLibrary) {
     assertNotFrozen();
 
diff --git a/packages/compiler/src/testing/index.ts b/packages/compiler/src/testing/index.ts
index fc701e6279d..76259c62657 100644
--- a/packages/compiler/src/testing/index.ts
+++ b/packages/compiler/src/testing/index.ts
@@ -15,6 +15,7 @@ export {
 } from "./rule-tester.js";
 export { extractCursor, extractSquiggles } from "./source-utils.js";
 export type { TestHostOptions } from "./test-compiler-host.js";
+/* eslint-disable @typescript-eslint/no-deprecated -- exporting deprecated APIs for backward compatibility */
 export { createTestHost, createTestRunner, findFilesFromPattern } from "./test-host.js";
 export {
   createTestLibrary,
@@ -25,9 +26,9 @@ export {
   trimBlankLines,
   type TestWrapperOptions,
 } from "./test-utils.js";
+/* eslint-enable @typescript-eslint/no-deprecated */
 export { createTester } from "./tester.js";
 export type {
-  BasicTestRunner,
   EmitterTester,
   EmitterTesterInstance,
   JsFile,
@@ -36,12 +37,17 @@ export type {
   TestCompileResult,
   TestEmitterCompileResult,
   TestFileSystem as TestFileSystem,
+  Tester,
+  TesterInstance,
+} from "./types.js";
+/* eslint-disable @typescript-eslint/no-deprecated -- exporting deprecated APIs for backward compatibility */
+export type {
+  BasicTestRunner,
   TestFiles,
   TestHost,
   TestHostConfig,
   TestHostError,
-  Tester,
-  TesterInstance,
   TypeSpecTestLibrary,
   TypeSpecTestLibraryInit,
 } from "./types.js";
+/* eslint-enable @typescript-eslint/no-deprecated */
diff --git a/packages/compiler/src/testing/rule-tester.ts b/packages/compiler/src/testing/rule-tester.ts
index 82061c6adb5..7fe8510ffb8 100644
--- a/packages/compiler/src/testing/rule-tester.ts
+++ b/packages/compiler/src/testing/rule-tester.ts
@@ -69,6 +69,7 @@ export interface ApplyCodeFixExpect {
 }
 
 export function createLinterRuleTester(
+  // eslint-disable-next-line @typescript-eslint/no-deprecated
   runner: BasicTestRunner | TesterInstance,
   ruleDef: LinterRuleDefinition<string, DiagnosticMessages>,
   libraryName: string,
@@ -221,6 +222,7 @@ export function createLinterRuleTester(
   }
 }
 
+// eslint-disable-next-line @typescript-eslint/no-deprecated
 function isLegacyTestRunner(tester: BasicTestRunner | TesterInstance): tester is BasicTestRunner {
   return "autoCodeOffset" in tester;
 }
diff --git a/packages/compiler/src/testing/test-compiler-host.ts b/packages/compiler/src/testing/test-compiler-host.ts
index 62b7891af39..ca57a34e836 100644
--- a/packages/compiler/src/testing/test-compiler-host.ts
+++ b/packages/compiler/src/testing/test-compiler-host.ts
@@ -6,6 +6,7 @@ import { CompilerHost, StringLiteral, Type } from "../core/types.js";
 import { resolveVirtualPath } from "./fs.js";
 import { TestFileSystem, TestHostError, TypeSpecTestLibrary } from "./types.js";
 
+// eslint-disable-next-line @typescript-eslint/no-deprecated
 export const StandardTestLibrary: TypeSpecTestLibrary = {
   name: "@typespec/compiler",
   packageRoot: CompilerPackageRoot,
@@ -44,6 +45,7 @@ export function createTestCompilerHost(
     async readUrl(url: string) {
       const contents = virtualFs.get(url);
       if (contents === undefined) {
+        // eslint-disable-next-line @typescript-eslint/no-deprecated
         throw new TestHostError(`File ${url} not found.`, "ENOENT");
       }
       return createSourceFile(contents, url);
@@ -52,6 +54,7 @@ export function createTestCompilerHost(
       path = resolveVirtualPath(path);
       const contents = virtualFs.get(path);
       if (contents === undefined) {
+        // eslint-disable-next-line @typescript-eslint/no-deprecated
         throw new TestHostError(`File ${path} not found.`, "ENOENT");
       }
       return createSourceFile(contents, path);
@@ -100,6 +103,7 @@ export function createTestCompilerHost(
       path = resolveVirtualPath(path);
       const module = jsImports.get(path);
       if (module === undefined) {
+        // eslint-disable-next-line @typescript-eslint/no-deprecated
         throw new TestHostError(`Module ${path} not found`, "ERR_MODULE_NOT_FOUND");
       }
       return module;
@@ -132,6 +136,7 @@ export function createTestCompilerHost(
         }
       }
 
+      // eslint-disable-next-line @typescript-eslint/no-deprecated
       throw new TestHostError(`File ${path} not found`, "ENOENT");
     },
 
diff --git a/packages/compiler/src/testing/test-host.ts b/packages/compiler/src/testing/test-host.ts
index 68ec16f523a..be03e4c291d 100644
--- a/packages/compiler/src/testing/test-host.ts
+++ b/packages/compiler/src/testing/test-host.ts
@@ -11,7 +11,8 @@ import { addTestLib, StandardTestLibrary } from "./test-compiler-host.js";
 import { createTestWrapper, resolveVirtualPath } from "./test-utils.js";
 import { BasicTestRunner, TestHost, TestHostConfig, TypeSpecTestLibrary } from "./types.js";
 
-/** Use {@link createTester} */
+/* eslint-disable @typescript-eslint/no-deprecated -- implementing deprecated APIs for backward compatibility */
+/** @deprecated Use {@link createTester} */
 export async function createTestHost(config: TestHostConfig = {}): Promise<TestHost> {
   const testHost = await createTestHostInternal();
   await testHost.addTypeSpecLibrary(StandardTestLibrary);
@@ -23,7 +24,7 @@ export async function createTestHost(config: TestHostConfig = {}): Promise<TestH
   return testHost;
 }
 
-/** Use {@link createTester} */
+/** @deprecated Use {@link createTester} */
 export async function createTestRunner(host?: TestHost): Promise<BasicTestRunner> {
   const testHost = host ?? (await createTestHost());
   return createTestWrapper(testHost);
@@ -80,6 +81,7 @@ async function createTestHostInternal(): Promise<TestHost> {
     return [testTypes, p.diagnostics];
   }
 }
+/* eslint-enable @typescript-eslint/no-deprecated */
 
 export async function findFilesFromPattern(directory: string, pattern: string): Promise<string[]> {
   const results: string[] = [];
diff --git a/packages/compiler/src/testing/test-utils.ts b/packages/compiler/src/testing/test-utils.ts
index 6b34d559b97..57dc3d4633c 100644
--- a/packages/compiler/src/testing/test-utils.ts
+++ b/packages/compiler/src/testing/test-utils.ts
@@ -21,7 +21,9 @@ export function resolveVirtualPath(path: string, ...paths: string[]) {
   return resolvePath(rootDir, path, ...paths);
 }
 
-/** Find the package root from the provided file */
+/** Find the package root from the provided file
+ * @deprecated Use {@link createTester} instead
+ */
 export function findTestPackageRoot(fileUrl: string): Promise<string> {
   return findProjectRoot(NodeHost.stat, fileURLToPath(fileUrl)) as Promise<string>;
 }
@@ -29,7 +31,9 @@ export function findTestPackageRoot(fileUrl: string): Promise<string> {
  * Define a test library defaulting to the most common library structure.
  * @param init Library configuration.
  * @returns TypeSpec Test library.
+ * @deprecated Use {@link createTester} instead
  */
+// eslint-disable-next-line @typescript-eslint/no-deprecated
 export function createTestLibrary(init: TypeSpecTestLibraryInit): TypeSpecTestLibrary {
   const { name } = init;
   const typespecFileFolder = init.typespecFileFolder ?? "lib";
@@ -53,6 +57,7 @@ export function createTestLibrary(init: TypeSpecTestLibraryInit): TypeSpecTestLi
   };
 }
 
+/** @deprecated Use {@link Tester} instead */
 export interface TestWrapperOptions {
   wrapper?: (code: string) => string;
 
@@ -68,6 +73,8 @@ export interface TestWrapperOptions {
 
   compilerOptions?: CompilerOptions;
 }
+/** @deprecated Use {@link createTester} instead */
+/* eslint-disable @typescript-eslint/no-deprecated -- implementing deprecated API for backward compatibility */
 export function createTestWrapper(
   host: TestHost,
   testWrapperOptions: TestWrapperOptions = {},
@@ -111,6 +118,7 @@ export function createTestWrapper(
     },
   };
 }
+/* eslint-enable @typescript-eslint/no-deprecated */
 
 export function trimBlankLines(code: string) {
   let start = 0;
diff --git a/packages/compiler/src/testing/types.ts b/packages/compiler/src/testing/types.ts
index 19e47db94f4..c8895255e9c 100644
--- a/packages/compiler/src/testing/types.ts
+++ b/packages/compiler/src/testing/types.ts
@@ -38,6 +38,7 @@ export interface TestFileSystem {
   addRealTypeSpecFile(path: string, realPath: string): Promise<void>;
   addRealJsFile(path: string, realPath: string): Promise<void>;
   addRealFolder(path: string, realPath: string): Promise<void>;
+  // eslint-disable-next-line @typescript-eslint/no-deprecated
   addTypeSpecLibrary(testLibrary: TypeSpecTestLibrary): Promise<void>;
 
   /** @internal */
@@ -220,6 +221,8 @@ export interface PositionedMarkerInFile extends PositionedMarker {
 // #endregion
 
 // #region Legacy Test host
+/* eslint-disable @typescript-eslint/no-deprecated -- defining deprecated APIs for backward compatibility */
+/** @deprecated Use {@link Tester} */
 export interface TestHost extends Pick<
   TestFileSystem,
   | "addTypeSpecFile"
@@ -243,12 +246,14 @@ export interface TestHost extends Pick<
   ): Promise<[Record<string, Type>, readonly Diagnostic[]]>;
 }
 
+/** @deprecated Use {@link Tester} */
 export interface TestFiles {
   realDir: string;
   pattern: string;
   virtualPath: string;
 }
 
+/** @deprecated Use {@link Tester} */
 export interface TypeSpecTestLibraryInit {
   name: string;
   packageRoot: string;
@@ -263,16 +268,19 @@ export interface TypeSpecTestLibraryInit {
   jsFileFolder?: string;
 }
 
+/** @deprecated Use {@link Tester} */
 export interface TypeSpecTestLibrary {
   name: string;
   packageRoot: string;
   files: TestFiles[];
 }
 
+/** @deprecated Use {@link Tester} */
 export interface TestHostConfig {
   libraries?: TypeSpecTestLibrary[];
 }
 
+/** @deprecated Use {@link Tester} */
 export class TestHostError extends Error {
   constructor(
     message: string,
@@ -282,6 +290,7 @@ export class TestHostError extends Error {
   }
 }
 
+/** @deprecated Use {@link TesterInstance} */
 export interface BasicTestRunner {
   readonly program: Program;
   readonly fs: Map<string, string>;
@@ -309,4 +318,5 @@ export interface BasicTestRunner {
     options?: CompilerOptions,
   ): Promise<[Record<string, Type>, readonly Diagnostic[]]>;
 }
+/* eslint-enable @typescript-eslint/no-deprecated */
 // #endregion
diff --git a/packages/compiler/templates/__snapshots__/emitter-ts/src/testing/index.ts b/packages/compiler/templates/__snapshots__/emitter-ts/src/testing/index.ts
deleted file mode 100644
index 2232aeb74fc..00000000000
--- a/packages/compiler/templates/__snapshots__/emitter-ts/src/testing/index.ts
+++ /dev/null
@@ -1,8 +0,0 @@
-import { resolvePath } from "@typespec/compiler";
-import { createTestLibrary, TypeSpecTestLibrary } from "@typespec/compiler/testing";
-import { fileURLToPath } from "url";
-
-export const EmitterTsTestLibrary: TypeSpecTestLibrary = createTestLibrary({
-  name: "emitter-ts",
-  packageRoot: resolvePath(fileURLToPath(import.meta.url), "../../../../"),
-});
diff --git a/packages/compiler/templates/__snapshots__/library-ts/src/testing/index.ts b/packages/compiler/templates/__snapshots__/library-ts/src/testing/index.ts
deleted file mode 100644
index 98f124f62a8..00000000000
--- a/packages/compiler/templates/__snapshots__/library-ts/src/testing/index.ts
+++ /dev/null
@@ -1,8 +0,0 @@
-import { resolvePath } from "@typespec/compiler";
-import { createTestLibrary, TypeSpecTestLibrary } from "@typespec/compiler/testing";
-import { fileURLToPath } from "url";
-
-export const LibraryTsTestLibrary: TypeSpecTestLibrary = createTestLibrary({
-  name: "library-ts",
-  packageRoot: resolvePath(fileURLToPath(import.meta.url), "../../../../"),
-});
diff --git a/packages/compiler/templates/emitter-ts/src/testing/index.ts.mu b/packages/compiler/templates/emitter-ts/src/testing/index.ts.mu
deleted file mode 100644
index cd1a7daa546..00000000000
--- a/packages/compiler/templates/emitter-ts/src/testing/index.ts.mu
+++ /dev/null
@@ -1,8 +0,0 @@
-import { resolvePath } from "@typespec/compiler";
-import { createTestLibrary, TypeSpecTestLibrary } from "@typespec/compiler/testing";
-import { fileURLToPath } from "url";
-
-export const {{#casing.pascalCase}}{{name}}{{/casing.pascalCase}}TestLibrary: TypeSpecTestLibrary = createTestLibrary({
-  name: "{{name}}",
-  packageRoot: resolvePath(fileURLToPath(import.meta.url), "../../../../"),
-});
diff --git a/packages/compiler/templates/library-ts/src/testing/index.ts.mu b/packages/compiler/templates/library-ts/src/testing/index.ts.mu
deleted file mode 100644
index cd1a7daa546..00000000000
--- a/packages/compiler/templates/library-ts/src/testing/index.ts.mu
+++ /dev/null
@@ -1,8 +0,0 @@
-import { resolvePath } from "@typespec/compiler";
-import { createTestLibrary, TypeSpecTestLibrary } from "@typespec/compiler/testing";
-import { fileURLToPath } from "url";
-
-export const {{#casing.pascalCase}}{{name}}{{/casing.pascalCase}}TestLibrary: TypeSpecTestLibrary = createTestLibrary({
-  name: "{{name}}",
-  packageRoot: resolvePath(fileURLToPath(import.meta.url), "../../../../"),
-});
diff --git a/packages/compiler/templates/scaffolding.json b/packages/compiler/templates/scaffolding.json
index 152f071f8f6..08823490a52 100644
--- a/packages/compiler/templates/scaffolding.json
+++ b/packages/compiler/templates/scaffolding.json
@@ -124,10 +124,6 @@
         "path": "library-ts/src/rules/no-interfaces.rule.ts",
         "destination": "src/rules/no-interfaces.rule.ts"
       },
-      {
-        "path": "library-ts/src/testing/index.ts.mu",
-        "destination": "src/testing/index.ts"
-      },
       {
         "path": "library-ts/test/decorators.test.ts.mu",
         "destination": "test/decorators.test.ts"
@@ -185,10 +181,6 @@
         "path": "emitter-ts/src/lib.ts",
         "destination": "src/lib.ts"
       },
-      {
-        "path": "emitter-ts/src/testing/index.ts.mu",
-        "destination": "src/testing/index.ts"
-      },
       {
         "path": "emitter-ts/test/hello.test.ts",
         "destination": "test/hello.test.ts"
diff --git a/packages/emitter-framework/src/testing/index.ts b/packages/emitter-framework/src/testing/index.ts
index 36a7e71dff4..43822ba4096 100644
--- a/packages/emitter-framework/src/testing/index.ts
+++ b/packages/emitter-framework/src/testing/index.ts
@@ -2,6 +2,7 @@ import { resolvePath } from "@typespec/compiler";
 import { createTestLibrary, type TypeSpecTestLibrary } from "@typespec/compiler/testing";
 import { fileURLToPath } from "url";
 
+/** @deprecated Use `createTester` from `@typespec/compiler/testing` instead */
 export const EmitterFrameworkTestLibrary: TypeSpecTestLibrary = createTestLibrary({
   name: "@typespec/emitter-framework",
   packageRoot: resolvePath(fileURLToPath(import.meta.url), "../../../"),
diff --git a/packages/events/src/testing/index.ts b/packages/events/src/testing/index.ts
index 66ba1a1bc01..882567e800b 100644
--- a/packages/events/src/testing/index.ts
+++ b/packages/events/src/testing/index.ts
@@ -1,6 +1,9 @@
 import { createTestLibrary, findTestPackageRoot } from "@typespec/compiler/testing";
 
+/** @deprecated Use `createTester` from `@typespec/compiler/testing` instead */
+/* eslint-disable @typescript-eslint/no-deprecated */
 export const EventsTestLibrary = createTestLibrary({
   name: "@typespec/events",
   packageRoot: await findTestPackageRoot(import.meta.url),
 });
+/* eslint-enable @typescript-eslint/no-deprecated */
diff --git a/packages/html-program-viewer/src/testing/index.ts b/packages/html-program-viewer/src/testing/index.ts
index 3054fa4f14e..cd259a8f62b 100644
--- a/packages/html-program-viewer/src/testing/index.ts
+++ b/packages/html-program-viewer/src/testing/index.ts
@@ -4,8 +4,11 @@ import {
   type TypeSpecTestLibrary,
 } from "@typespec/compiler/testing";
 
+/** @deprecated Use `createTester` from `@typespec/compiler/testing` instead */
+/* eslint-disable @typescript-eslint/no-deprecated */
 export const ProgramViewerTestLibrary: TypeSpecTestLibrary = createTestLibrary({
   name: "@typespec/html-program-viewer",
   jsFileFolder: "dist/emitter",
   packageRoot: await findTestPackageRoot(import.meta.url),
 });
+/* eslint-enable @typescript-eslint/no-deprecated */
diff --git a/packages/http-client-js/src/testing/index.ts b/packages/http-client-js/src/testing/index.ts
index 5148a1bba17..a9a1fc2dcc9 100644
--- a/packages/http-client-js/src/testing/index.ts
+++ b/packages/http-client-js/src/testing/index.ts
@@ -2,6 +2,7 @@ import { resolvePath } from "@typespec/compiler";
 import { createTestLibrary, TypeSpecTestLibrary } from "@typespec/compiler/testing";
 import { fileURLToPath } from "url";
 
+/** @deprecated Use `createTester` from `@typespec/compiler/testing` instead */
 export const HttpClientJavascriptEmitterTestLibrary: TypeSpecTestLibrary = createTestLibrary({
   name: "@typespec/http-client-js",
   packageRoot: resolvePath(fileURLToPath(import.meta.url), "../../../"),
diff --git a/packages/http-client/src/testing/index.ts b/packages/http-client/src/testing/index.ts
index fca24204afe..8cdea7d5c7a 100644
--- a/packages/http-client/src/testing/index.ts
+++ b/packages/http-client/src/testing/index.ts
@@ -2,6 +2,7 @@ import { resolvePath } from "@typespec/compiler";
 import { createTestLibrary, TypeSpecTestLibrary } from "@typespec/compiler/testing";
 import { fileURLToPath } from "url";
 
+/** @deprecated Use `createTester` from `@typespec/compiler/testing` instead */
 export const HttpClientTestLibrary: TypeSpecTestLibrary = createTestLibrary({
   name: "@typespec/http-client",
   packageRoot: resolvePath(fileURLToPath(import.meta.url), "../../../../"),
diff --git a/packages/http-server-js/src/testing/index.ts b/packages/http-server-js/src/testing/index.ts
index 94286cbfc2d..4455fcb04e9 100644
--- a/packages/http-server-js/src/testing/index.ts
+++ b/packages/http-server-js/src/testing/index.ts
@@ -4,7 +4,10 @@ import {
   findTestPackageRoot,
 } from "@typespec/compiler/testing";
 
+/** @deprecated Use `createTester` from `@typespec/compiler/testing` instead */
+/* eslint-disable @typescript-eslint/no-deprecated */
 export const HttpServerJavaScriptTestLibrary: TypeSpecTestLibrary = createTestLibrary({
   name: "@typespec/http-server-js",
   packageRoot: await findTestPackageRoot(import.meta.url),
 });
+/* eslint-enable @typescript-eslint/no-deprecated */
diff --git a/packages/http/src/testing/index.ts b/packages/http/src/testing/index.ts
index 9c1a1d327c7..d792b4931cf 100644
--- a/packages/http/src/testing/index.ts
+++ b/packages/http/src/testing/index.ts
@@ -4,7 +4,10 @@ import {
   TypeSpecTestLibrary,
 } from "@typespec/compiler/testing";
 
+/** @deprecated Use `createTester` from `@typespec/compiler/testing` instead */
+/* eslint-disable @typescript-eslint/no-deprecated */
 export const HttpTestLibrary: TypeSpecTestLibrary = createTestLibrary({
   name: "@typespec/http",
   packageRoot: await findTestPackageRoot(import.meta.url),
 });
+/* eslint-enable @typescript-eslint/no-deprecated */
diff --git a/packages/json-schema/src/testing/index.ts b/packages/json-schema/src/testing/index.ts
index 78267d60957..eeac8165fd5 100644
--- a/packages/json-schema/src/testing/index.ts
+++ b/packages/json-schema/src/testing/index.ts
@@ -4,7 +4,10 @@ import {
   type TypeSpecTestLibrary,
 } from "@typespec/compiler/testing";
 
+/** @deprecated Use `createTester` from `@typespec/compiler/testing` instead */
+/* eslint-disable @typescript-eslint/no-deprecated */
 export const JsonSchemaTestLibrary: TypeSpecTestLibrary = createTestLibrary({
   name: "@typespec/json-schema",
   packageRoot: await findTestPackageRoot(import.meta.url),
 });
+/* eslint-enable @typescript-eslint/no-deprecated */
diff --git a/packages/library-linter/src/testing/index.ts b/packages/library-linter/src/testing/index.ts
index 15db03ddbda..8ac5f4e8ef6 100644
--- a/packages/library-linter/src/testing/index.ts
+++ b/packages/library-linter/src/testing/index.ts
@@ -4,7 +4,10 @@ import {
   TypeSpecTestLibrary,
 } from "@typespec/compiler/testing";
 
+/** @deprecated Use `createTester` from `@typespec/compiler/testing` instead */
+/* eslint-disable @typescript-eslint/no-deprecated */
 export const LibraryLinterTestLibrary: TypeSpecTestLibrary = createTestLibrary({
   name: "@typespec/library-linter",
   packageRoot: await findTestPackageRoot(import.meta.url),
 });
+/* eslint-enable @typescript-eslint/no-deprecated */
diff --git a/packages/openapi/src/testing/index.ts b/packages/openapi/src/testing/index.ts
index 706829790f7..f86032d85b8 100644
--- a/packages/openapi/src/testing/index.ts
+++ b/packages/openapi/src/testing/index.ts
@@ -5,7 +5,9 @@ import {
 } from "@typespec/compiler/testing";
 
 /** @deprecated use new Tester */
+/* eslint-disable @typescript-eslint/no-deprecated */
 export const OpenAPITestLibrary: TypeSpecTestLibrary = createTestLibrary({
   name: "@typespec/openapi",
   packageRoot: await findTestPackageRoot(import.meta.url),
 });
+/* eslint-enable @typescript-eslint/no-deprecated */
diff --git a/packages/openapi3/src/testing/index.ts b/packages/openapi3/src/testing/index.ts
index be67df9601c..4b284d4a4e4 100644
--- a/packages/openapi3/src/testing/index.ts
+++ b/packages/openapi3/src/testing/index.ts
@@ -5,7 +5,9 @@ import {
 } from "@typespec/compiler/testing";
 
 /** @deprecated use new Tester */
+/* eslint-disable @typescript-eslint/no-deprecated */
 export const OpenAPI3TestLibrary: TypeSpecTestLibrary = createTestLibrary({
   name: "@typespec/openapi3",
   packageRoot: await findTestPackageRoot(import.meta.url),
 });
+/* eslint-enable @typescript-eslint/no-deprecated */
diff --git a/packages/rest/src/testing/index.ts b/packages/rest/src/testing/index.ts
index 07fc1e57e28..3a60e13ae9d 100644
--- a/packages/rest/src/testing/index.ts
+++ b/packages/rest/src/testing/index.ts
@@ -4,7 +4,10 @@ import {
   TypeSpecTestLibrary,
 } from "@typespec/compiler/testing";
 
+/** @deprecated Use `createTester` from `@typespec/compiler/testing` instead */
+/* eslint-disable @typescript-eslint/no-deprecated */
 export const RestTestLibrary: TypeSpecTestLibrary = createTestLibrary({
   name: "@typespec/rest",
   packageRoot: await findTestPackageRoot(import.meta.url),
 });
+/* eslint-enable @typescript-eslint/no-deprecated */
diff --git a/packages/sse/src/testing/index.ts b/packages/sse/src/testing/index.ts
index aaced1410b3..dc936549ac1 100644
--- a/packages/sse/src/testing/index.ts
+++ b/packages/sse/src/testing/index.ts
@@ -1,6 +1,9 @@
 import { createTestLibrary, findTestPackageRoot } from "@typespec/compiler/testing";
 
+/** @deprecated Use `createTester` from `@typespec/compiler/testing` instead */
+/* eslint-disable @typescript-eslint/no-deprecated */
 export const SSETestLibrary = createTestLibrary({
   name: "@typespec/sse",
   packageRoot: await findTestPackageRoot(import.meta.url),
 });
+/* eslint-enable @typescript-eslint/no-deprecated */
diff --git a/packages/streams/src/testing/index.ts b/packages/streams/src/testing/index.ts
index 1308ba5390f..3e73af2e820 100644
--- a/packages/streams/src/testing/index.ts
+++ b/packages/streams/src/testing/index.ts
@@ -1,6 +1,9 @@
 import { createTestLibrary, findTestPackageRoot } from "@typespec/compiler/testing";
 
+/** @deprecated Use `createTester` from `@typespec/compiler/testing` instead */
+/* eslint-disable @typescript-eslint/no-deprecated */
 export const StreamsTestLibrary = createTestLibrary({
   name: "@typespec/streams",
   packageRoot: await findTestPackageRoot(import.meta.url),
 });
+/* eslint-enable @typescript-eslint/no-deprecated */
diff --git a/packages/versioning/src/testing/index.ts b/packages/versioning/src/testing/index.ts
index 75fe32643a6..1c1c3ed48bc 100644
--- a/packages/versioning/src/testing/index.ts
+++ b/packages/versioning/src/testing/index.ts
@@ -4,7 +4,10 @@ import {
   type TypeSpecTestLibrary,
 } from "@typespec/compiler/testing";
 
+/** @deprecated Use `createTester` from `@typespec/compiler/testing` instead */
+/* eslint-disable @typescript-eslint/no-deprecated */
 export const VersioningTestLibrary: TypeSpecTestLibrary = createTestLibrary({
   name: "@typespec/versioning",
   packageRoot: await findTestPackageRoot(import.meta.url),
 });
+/* eslint-enable @typescript-eslint/no-deprecated */
diff --git a/packages/xml/src/testing/index.ts b/packages/xml/src/testing/index.ts
index 6f4e37bebb8..53cc42405f6 100644
--- a/packages/xml/src/testing/index.ts
+++ b/packages/xml/src/testing/index.ts
@@ -4,7 +4,10 @@ import {
   type TypeSpecTestLibrary,
 } from "@typespec/compiler/testing";
 
+/** @deprecated Use `createTester` from `@typespec/compiler/testing` instead */
+/* eslint-disable @typescript-eslint/no-deprecated */
 export const XmlTestLibrary: TypeSpecTestLibrary = createTestLibrary({
   name: "@typespec/xml",
   packageRoot: await findTestPackageRoot(import.meta.url),
 });
+/* eslint-enable @typescript-eslint/no-deprecated */