Fixes from review

__tests__/distributors/adopt-installer.test.ts

@@ -4,6 +4,7 @@ import {
   AdoptDistribution,
   AdoptImplementation
 } from '../../src/distributions/adopt/installer';
+import {TemurinDistribution} from '../../src/distributions/temurin/installer';
 import {JavaInstallerOptions} from '../../src/distributions/base-models';
 
 import os from 'os';
@@ -256,6 +257,38 @@ describe('getAvailableVersions', () => {
 });
 
 describe('findPackageForDownload', () => {
+  it('returns Temurin result and does not query Adopt API when Temurin succeeds', async () => {
+    const temurinRelease = {
+      version: '11.0.31+11',
+      url: 'https://example.test/temurin-11.tar.gz'
+    };
+    const temurinFindPackageForDownload = jest
+      .fn()
+      .mockResolvedValue(temurinRelease);
+    const temurinDistribution = {
+      findPackageForDownload: temurinFindPackageForDownload
+    } as unknown as TemurinDistribution;
+
+    const distribution = new AdoptDistribution(
+      {
+        version: '11',
+        architecture: 'x64',
+        packageType: 'jdk',
+        checkLatest: false
+      },
+      AdoptImplementation.Hotspot,
+      temurinDistribution
+    );
+    const adoptLookupSpy = jest.fn();
+    distribution['getAvailableVersions'] = adoptLookupSpy;
+
+    const resolvedVersion = await distribution['findPackageForDownload']('11');
+
+    expect(resolvedVersion).toEqual(temurinRelease);
+    expect(temurinFindPackageForDownload).toHaveBeenCalledWith('11');
+    expect(adoptLookupSpy).not.toHaveBeenCalled();
+  });
+
   it.each([
     ['9', '9.0.7+10'],
     ['15', '15.0.2+7'],
@@ -279,9 +312,10 @@ describe('findPackageForDownload', () => {
       AdoptImplementation.Hotspot
     );
     // Mock Temurin to fail so fallback to AdoptOpenJDK is tested
-    distribution['temurinDistribution']!['findPackageForDownload'] = async () => {
+    distribution['temurinDistribution']!['findPackageForDownload'] =
-      throw new Error('No matching version found for SemVer');
+      async () => {
-    };
+        throw new Error('No matching version found for SemVer');
+      };
     distribution['getAvailableVersions'] = async () => manifestData as any;
     const resolvedVersion = await distribution['findPackageForDownload'](input);
     expect(resolvedVersion.version).toBe(expected);
@@ -298,9 +332,10 @@ describe('findPackageForDownload', () => {
       AdoptImplementation.Hotspot
     );
     // Mock Temurin to fail so fallback to AdoptOpenJDK is tested
-    distribution['temurinDistribution']!['findPackageForDownload'] = async () => {
+    distribution['temurinDistribution']!['findPackageForDownload'] =
-      throw new Error('No matching version found for SemVer');
+      async () => {
-    };
+        throw new Error('No matching version found for SemVer');
+      };
     distribution['getAvailableVersions'] = async () => manifestData as any;
     await expect(
       distribution['findPackageForDownload']('9.0.8')
@@ -318,9 +353,10 @@ describe('findPackageForDownload', () => {
       AdoptImplementation.Hotspot
     );
     // Mock Temurin to fail so fallback to AdoptOpenJDK is tested
-    distribution['temurinDistribution']!['findPackageForDownload'] = async () => {
+    distribution['temurinDistribution']!['findPackageForDownload'] =
-      throw new Error('No matching version found for SemVer');
+      async () => {
-    };
+        throw new Error('No matching version found for SemVer');
+      };
     distribution['getAvailableVersions'] = async () => manifestData as any;
     await expect(distribution['findPackageForDownload']('7.x')).rejects.toThrow(
       /No matching version found for SemVer */
@@ -338,9 +374,10 @@ describe('findPackageForDownload', () => {
       AdoptImplementation.Hotspot
     );
     // Mock Temurin to fail so fallback to AdoptOpenJDK is tested
-    distribution['temurinDistribution']!['findPackageForDownload'] = async () => {
+    distribution['temurinDistribution']!['findPackageForDownload'] =
-      throw new Error('No matching version found for SemVer');
+      async () => {
-    };
+        throw new Error('No matching version found for SemVer');
+      };
     distribution['getAvailableVersions'] = async () => [];
     await expect(distribution['findPackageForDownload']('11')).rejects.toThrow(
       /No matching version found for SemVer */

dist/setup/index.js

@@ -77848,7 +77848,8 @@ class AdoptDistribution extends base_installer_1.JavaBase {
                 catch (error) {
                     // Log the failure but always fall back to legacy AdoptOpenJDK for resilience
                     const errorMessage = error instanceof Error ? error.message : String(error);
-                    if (errorMessage.includes('No matching version found')) {
+                    if (error instanceof Error &&
+                        error.name === 'VersionNotFoundError') {
                         core.notice('The JVM you are looking for could not be found in the Temurin repository, this likely indicates ' +
                             'that you are using an out of date version of Java, consider updating and moving to using the Temurin distribution type in setup-java.');
                     }
@@ -78260,7 +78261,9 @@ class JavaBase {
                 parts.push(`(showing first ${maxVersionsToShow} of ${availableVersions.length} versions, enable debug mode to see all)`);
             }
         }
-        return new Error(parts.join('\n'));
+        const error = new Error(parts.join('\n'));
+        error.name = 'VersionNotFoundError';
+        return error;
     }
     setJavaDefault(version, toolPath) {
         const majorVersion = version.split('.')[0];

src/distributions/adopt/installer.ts

@@ -73,8 +73,9 @@ export class AdoptDistribution extends JavaBase {
         return await this.temurinDistribution.findPackageForDownload(version);
       } catch (error) {
         // Log the failure but always fall back to legacy AdoptOpenJDK for resilience
-        const errorMessage = error instanceof Error ? error.message : String(error);
+        const errorMessage =
-        if (errorMessage.includes('No matching version found')) {
+          error instanceof Error ? error.message : String(error);
+        if (error instanceof Error && error.name === 'VersionNotFoundError') {
           core.notice(
             'The JVM you are looking for could not be found in the Temurin repository, this likely indicates ' +
               'that you are using an out of date version of Java, consider updating and moving to using the Temurin distribution type in setup-java.'

src/distributions/base-installer.ts

@@ -292,7 +292,9 @@ export abstract class JavaBase {
       }
     }
 
-    return new Error(parts.join('\n'));
+    const error = new Error(parts.join('\n'));
+    error.name = 'VersionNotFoundError';
+    return error;
   }
 
   protected setJavaDefault(version: string, toolPath: string) {