# HG changeset patch
# User stuefe
# Date 1559762086 -7200
# Node ID 7e2238451585029680f126ccbb46d01f2ff5607f
# Parent  57b93b113ec0207c1d4b3e8771503c2a1b2c0928
8225348: serviceability/dcmd/vm/EventsTest.java failed
Reviewed-by: jcbeyler, cjplummer

diff -r 57b93b113ec0 -r 7e2238451585 test/hotspot/jtreg/serviceability/dcmd/vm/EventsTest.java
--- a/test/hotspot/jtreg/serviceability/dcmd/vm/EventsTest.java	Wed Jun 05 09:12:45 2019 +0200
+++ b/test/hotspot/jtreg/serviceability/dcmd/vm/EventsTest.java	Wed Jun 05 21:14:46 2019 +0200
@@ -38,27 +38,30 @@
  */
 public class EventsTest {
 
+    static String buildHeaderPattern(String logname) {
+        return "^" + logname + ".*\\(\\d+ events\\):";
+    }
+
     public void run_all(CommandExecutor executor) {
         OutputAnalyzer output = executor.execute("VM.events");
-        // This tests for the output to contain the event log *names*. Those are always
-        // printed even if the corresponding event log is empty (e.g. "Classes redefined (0 events)")
-        output.shouldContain("Events");
-        output.shouldContain("Compilation");
-        output.shouldContain("GC");
-        output.shouldContain("Deoptimization");
-        output.shouldContain("Classes unloaded");
+        // This tests for the output to contain the event log header line (e.g. "Classes unloaded (0 events):").
+        // Those are always printed even if the corresponding event log is empty.
+        output.stdoutShouldMatch(buildHeaderPattern("Events"));
+        output.stdoutShouldMatch(buildHeaderPattern("Compilation"));
+        output.stdoutShouldMatch(buildHeaderPattern("GC Heap History"));
+        output.stdoutShouldMatch(buildHeaderPattern("Deoptimization"));
+        output.stdoutShouldMatch(buildHeaderPattern("Classes unloaded"));
     }
 
     public void run_selected(CommandExecutor executor) {
         OutputAnalyzer output = executor.execute("VM.events log=deopt");
-        // This tests for the output to contain the event log *names*. Those are always
-        // printed even if the corresponding event log is empty (e.g. "Classes redefined (0 events)")
-        output.shouldContain("Deoptimization");
+        // We only expect one log to be printed here.
+        output.stdoutShouldMatch(buildHeaderPattern("Deoptimization"));
 
-        output.shouldNotContain("Events");
-        output.shouldNotContain("Compilation");
-        output.shouldNotContain("GC");
-        output.shouldNotContain("Classes unloaded");
+        output.stdoutShouldNotMatch(buildHeaderPattern("Events"));
+        output.stdoutShouldNotMatch(buildHeaderPattern("Compilation"));
+        output.stdoutShouldNotMatch(buildHeaderPattern("GC Heap History"));
+        output.stdoutShouldNotMatch(buildHeaderPattern("Classes unloaded"));
     }
 
     @Test