1 files changed, 15 insertions, 11 deletions
diff --git a/src/test/java/com/seaofnodes/simple/fuzzer/Fuzzer.java b/src/test/java/com/seaofnodes/simple/fuzzer/Fuzzer.java
index b29eb2c3..ec9e3910 100644
--- a/src/test/java/com/seaofnodes/simple/fuzzer/Fuzzer.java
+++ b/src/test/java/com/seaofnodes/simple/fuzzer/Fuzzer.java
@@ -85,7 +85,7 @@ public class Fuzzer {
             code1 = FuzzerUtils.parse(script, 123, true);
         } catch (RuntimeException e1) {
             try {
-                FuzzerUtils.parse(script, 456, false);
+                FuzzerUtils.parse(script, 456, true);
             } catch (RuntimeException e2) {
                 if (FuzzerUtils.isExceptionFromSameCause(e1, e2)) {
                     if (!valid || e1.getClass() == Parser.ParseException.class) return;
@@ -163,26 +163,30 @@ public class Fuzzer {
         check(sb.toString(), valid, seed);
     }
 
-
     /**
-     * Check that no exceptions happened.
-     * @return true if no exception happened
+     * Run one seed as a regression test.  Unlike the exploratory fuzzer path,
+     * this deliberately does not reduce on failure; old bad seeds should fail
+     * fast with the seed visible in the JUnit assertion.
      */
-    public boolean noExceptions() {
-        return exceptions.isEmpty();
-    }
-
-    /** Run a fixed chapter-local seed without reducing or swallowing failures. */
     public void fuzzPeepsRegression(long seed) {
         var rand = new Random(seed);
         var sb = new StringBuilder();
         var valid = new ScriptGenerator(rand, sb, true).genProgram();
         try {
             runCheck(sb.toString(), valid);
-        } catch (Throwable e) {
-            AssertionError ae = new AssertionError("Fuzzer regression seed failed: " + seed);
+        } catch( Throwable e ) {
+            AssertionError ae = new AssertionError("Fuzzer regression seed failed: "+seed);
             ae.initCause(e);
             throw ae;
         }
     }
+
+
+    /**
+     * Check that no exceptions happened.
+     * @return true if no exception happened
+     */
+    public boolean noExceptions() {
+        return exceptions.isEmpty();
+    }
 }