From 15812faf094afeee6e9c73cc2024c8c6130c73e8 Mon Sep 17 00:00:00 2001
From: Charles Lyding <19598772+clydin@users.noreply.github.com>
Date: Fri, 6 Jun 2025 10:28:24 -0400
Subject: [PATCH] fix(@angular/build): use date/time based output path for
 vitest unit-test

The output directory name for the unit-test code when using the
experimental `unit-test` builder with the `vitest` runner will now use
a value based on the date and time of test execution instead of only
a random UUID. This value improves the discoverability of a test execution
when multiple have been performed.
---
 packages/angular/build/src/builders/unit-test/builder.ts | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/packages/angular/build/src/builders/unit-test/builder.ts b/packages/angular/build/src/builders/unit-test/builder.ts
index 15ac0294a2fc..1ab5b3369a75 100644
--- a/packages/angular/build/src/builders/unit-test/builder.ts
+++ b/packages/angular/build/src/builders/unit-test/builder.ts
@@ -113,7 +113,7 @@ export async function* execute(
     buildTargetOptions.polyfills.push('zone.js/testing');
   }
 
-  const outputPath = path.join(context.workspaceRoot, 'dist/test-out', randomUUID());
+  const outputPath = path.join(context.workspaceRoot, generateOutputPath());
   const buildOptions: ApplicationBuilderInternalOptions = {
     ...buildTargetOptions,
     watch: normalizedOptions.watch,
@@ -343,3 +343,10 @@ function setupBrowserConfiguration(
 
   return { browser };
 }
+
+function generateOutputPath(): string {
+  const datePrefix = new Date().toISOString().replaceAll(/[-:.]/g, '');
+  const uuidSuffix = randomUUID().slice(0, 8);
+
+  return path.join('dist', 'test-out', `${datePrefix}-${uuidSuffix}`);
+}