Fix detection of GHA

Author: RealCLanger

test/jdk/tools/jlink/plugins/AddSapMachineToolsTest.java

@@ -59,12 +59,27 @@ public class AddSapMachineToolsTest {
 
     @Test
     public void testSapMachineTools() throws IOException {
+        System.out.println("\n\nSystem properties:");
+        System.getProperties().forEach((key, value) -> {
+            System.out.println(key + ": " + value);
+        });
+        System.out.println("\n\nEnvironment:");
+        System.getenv().forEach((key, value) -> {
+            System.out.println(key + ": " + value);
+        });
+
         // async profiler is only available on restricted set of platforms and not in Github Actions builds
-        String gha = System.getenv("GITHUB_ACTIONS");
-        boolean shouldHaveAsync = (gha == null || !gha.contains("true")) &&
+        // checking whether we are in GHA environment is hacky, we guess by seeing a path in /Users/runner/work
+        String testRoot = System.getenv("test.root");
+        boolean shouldHaveAsync = (testRoot == null || !testRoot.startsWith("/Users/runner/work")) &&
                 (Platform.isOSX() ||
                  (Platform.isLinux() && (Platform.isAArch64() || Platform.isPPC() || Platform.isX64()) && !Platform.isMusl()));
 
+        System.out.println("\n\nshouldHaveAsync:" + shouldHaveAsync);
+        if (true) {
+            throw new RuntimeException("Desired");
+        }
+
         Path sourceJavaHome = Path.of(System.getProperty("java.home"));
 
         if (!shouldHaveAsync) {