test_runner: hide failing tests title when all tests pass

PR-URL: #47370
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>

Author: MoLow

lib/internal/test_runner/reporter/spec.js

@@ -124,6 +124,10 @@ class SpecReporter extends Transform {
 callback(null,this.#handleEvent({ type, data }));
 }
 _flush(callback){
+if(this.#failedTests.length===0){
+callback(null,'');
+return;
+}
 constresults=[`\n${colors['test:fail']}${symbols['test:fail']}failing tests:${white}\n`];
 for(leti=0;i<this.#failedTests.length;i++){
 ArrayPrototypePush(results,this.#formatTestReport(

test/message/test_runner_spec_reporter_successful.js

@@ -0,0 +1,6 @@
+// Flags: --no-warnings --test-reporter=spec
+'use strict';
+require('../common');
+const{ it }=require('node:test');
+
+it('should pass',()=>{});

test/message/test_runner_spec_reporter_successful.out

@@ -0,0 +1,9 @@
+* should pass *(*ms)*
+*tests 1*
+*suites 0*
+*pass 1*
+*fail 0*
+*cancelled 0*
+*skipped 0*
+*todo 0*
+*duration_ms *