BREAKING: remove Deno.runTests() API (#4922)

Deno.runTests() interface is not yet good enough to be exposed
publicly with stability guarantees.

This commit removes public API related to testing: Deno.runTests()
and Deno.TestMessage, but keeps them exposed on Deno.internal object
so they can be used with "deno test" subcommand.

2 files changed, 22 insertions, 11 deletions

diff --git a/cli/js/tests/test_util.ts b/cli/js/tests/test_util.ts
index fc0b8a390..516834454 100644
--- a/cli/js/tests/test_util.ts
+++ b/cli/js/tests/test_util.ts
@@ -200,11 +200,14 @@ const encoder = new TextEncoder();
 
 // Replace functions with null, errors with their stack strings, and JSONify.
 // eslint-disable-next-line @typescript-eslint/no-explicit-any
-function serializeTestMessage(message: Deno.TestMessage): string {
+function serializeTestMessage(message: any): string {
   return JSON.stringify({
     start: message.start && {
       ...message.start,
-      tests: message.start.tests.map((test) => ({ ...test, fn: null })),
+      tests: message.start.tests.map((test: Deno.TestDefinition) => ({
+        ...test,
+        fn: null,
+      })),
     },
     testStart: message.testStart && { ...message.testStart, fn: null },
     testEnd: message.testEnd && {
@@ -213,7 +216,8 @@ function serializeTestMessage(message: Deno.TestMessage): string {
     },
     end: message.end && {
       ...message.end,
-      results: message.end.results.map((result) => ({
+      // eslint-disable-next-line @typescript-eslint/no-explicit-any
+      results: message.end.results.map((result: any) => ({
         ...result,
         error: result.error?.stack,
       })),
@@ -223,7 +227,8 @@ function serializeTestMessage(message: Deno.TestMessage): string {
 
 export async function reportToConn(
   conn: Deno.Conn,
-  message: Deno.TestMessage
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  message: any
 ): Promise<void> {
   const line = serializeTestMessage(message);
   const encodedMsg = encoder.encode(line + (message.end == null ? "\n" : ""));
diff --git a/cli/js/tests/unit_test_runner.ts b/cli/js/tests/unit_test_runner.ts
index 43009c612..7a246cd39 100755
--- a/cli/js/tests/unit_test_runner.ts
+++ b/cli/js/tests/unit_test_runner.ts
@@ -12,13 +12,17 @@ import {
 } from "./test_util.ts";
 
 // eslint-disable-next-line @typescript-eslint/no-explicit-any
-const reportToConsole = (Deno as any)[Deno.symbols.internal]
-  .reportToConsole as (message: Deno.TestMessage) => void;
+const internalObj = (Deno as any)[Deno.symbols.internal];
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
+const reportToConsole = internalObj.reportToConsole as (message: any) => void;
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
+const runTests = internalObj.runTests as (options: any) => Promise<any>;
 
 interface PermissionSetTestResult {
   perms: Permissions;
   passed: boolean;
-  endMessage: Deno.TestMessage["end"];
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  endMessage: any;
   permsStr: string;
 }
 
@@ -66,7 +70,7 @@ async function workerRunnerMain(
   // Register unit tests that match process permissions
   await registerUnitTests();
   // Execute tests
-  await Deno.runTests({
+  await runTests({
     exitOnFail: false,
     filter,
     reportToConsole: false,
@@ -129,11 +133,13 @@ async function runTestsForPermissionSet(
   const conn = await listener.accept();
 
   let expectedPassedTests;
-  let endMessage: Deno.TestMessage["end"];
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  let endMessage: any;
 
   try {
     for await (const line of readLines(conn)) {
-      const message = JSON.parse(line) as Deno.TestMessage;
+      // eslint-disable-next-line @typescript-eslint/no-explicit-any
+      const message = JSON.parse(line) as any;
       reportToConsole(message);
       if (message.start != null) {
         expectedPassedTests = message.start.tests.length;
@@ -297,7 +303,7 @@ async function main(): Promise<void> {
 
   // Running tests matching current process permissions
   await registerUnitTests();
-  await Deno.runTests({ filter });
+  await runTests({ filter });
 }
 
 main();