From 7a3fbd52f480fd29f184039807c3dab2a24f050a Mon Sep 17 00:00:00 2001
From: Henning Schmiedehausen <henning@schmiedehausen.org>
Date: Tue, 2 Mar 2021 12:11:22 -0800
Subject: Fixes failing tests on JDK 11+

Some brittle code tests the messages of exceptions etc. in the tests which have changed in JDK11+

Tested with OpenJDK 11 and OpenJDK 15.
---
 .../velocity/test/BuiltInEventHandlerTestCase.java | 30 +++++++++++++++++-----
 .../velocity/test/issues/VelTools66TestCase.java   |  8 +++++-
 .../introspection/ConversionHandlerTestCase.java   | 10 ++++++++
 3 files changed, 41 insertions(+), 7 deletions(-)

diff --git a/velocity-engine-core/src/test/java/org/apache/velocity/test/BuiltInEventHandlerTestCase.java b/velocity-engine-core/src/test/java/org/apache/velocity/test/BuiltInEventHandlerTestCase.java
index 63e10676..c415e476 100644
--- a/velocity-engine-core/src/test/java/org/apache/velocity/test/BuiltInEventHandlerTestCase.java
+++ b/velocity-engine-core/src/test/java/org/apache/velocity/test/BuiltInEventHandlerTestCase.java
@@ -472,27 +472,45 @@ public class BuiltInEventHandlerTestCase extends BaseTestCase {
         ve1.evaluate(context, writer, "test", "$list.get(0)");
         String result = writer.toString();
         assertTrue(result.contains("IndexOutOfBoundsException"));
-        assertTrue(result.contains("Index: 0, Size: 0"));
+        assertTrue(
+                result.contains("Index: 0, Size: 0") // JDK8
+                || result.contains("Index 0 out of bounds for length 0") // JDK 11 / JDK 15
+        );
         assertTrue(!result.contains("at test (line 1, column 7)"));
-        assertTrue(!result.contains("rangeCheck"));
+        assertFalse(
+                result.contains("rangeCheck") // JDK 8
+                        || result.contains("Preconditions.outOfBounds") // JDK 11 / JDK 15
+        );
 
         // exception, message and template info
         writer = new StringWriter();
         ve2.evaluate(context,writer,"test","$list.get(0)");
         result = writer.toString();
         assertTrue(result.contains("IndexOutOfBoundsException"));
-        assertTrue(result.contains("Index: 0, Size: 0"));
+        assertTrue(
+                result.contains("Index: 0, Size: 0") // JDK8
+                        || result.contains("Index 0 out of bounds for length 0") // JDK 11 / JDK 15
+        );
         assertTrue(result.contains("at test (line 1, column 7)"));
-        assertTrue(!result.contains("rangeCheck"));
+        assertFalse(
+                result.contains("rangeCheck") // JDK 8
+                        || result.contains("Preconditions.outOfBounds") // JDK 11 / JDK 15
+        );
 
         // exception, message and stack trace
         writer = new StringWriter();
         ve3.evaluate(context,writer,"test","$list.get(0)");
         result = writer.toString();
         assertTrue(result.contains("IndexOutOfBoundsException"));
-        assertTrue(result.contains("Index: 0, Size: 0"));
+        assertTrue(
+                result.contains("Index: 0, Size: 0") // JDK8
+                        || result.contains("Index 0 out of bounds for length 0") // JDK 11 / JDK 15
+        );
         assertTrue(!result.contains("at test (line 1, column 7)"));
-        assertTrue(result.contains("rangeCheck"));
+        assertTrue(
+                result.contains("rangeCheck") // JDK 8
+                || result.contains("Preconditions.outOfBounds") // JDK 11 / JDK 15
+        );
 
         log("PrintException handler successful.");
 
diff --git a/velocity-engine-core/src/test/java/org/apache/velocity/test/issues/VelTools66TestCase.java b/velocity-engine-core/src/test/java/org/apache/velocity/test/issues/VelTools66TestCase.java
index 3906f6c2..529683ff 100644
--- a/velocity-engine-core/src/test/java/org/apache/velocity/test/issues/VelTools66TestCase.java
+++ b/velocity-engine-core/src/test/java/org/apache/velocity/test/issues/VelTools66TestCase.java
@@ -83,7 +83,13 @@ public class VelTools66TestCase
         /* the testcase is obsolete in JDK 8, as SystemManager.checkMemberAccess is not anymore called
          * by Class.getMethods() */
 
-        int javaVersion = Integer.parseInt(System.getProperty("java.version").split("\\.")[1]);
+        String [] javaVersionFields = System.getProperty("java.version").split("\\.");
+        int javaVersion = Integer.parseInt(javaVersionFields[0]);
+        if (javaVersion == 1)
+        {
+            javaVersion = Integer.parseInt(javaVersionFields[1]);
+        }
+
         if (javaVersion >= 8)
         {
             return;
diff --git a/velocity-engine-core/src/test/java/org/apache/velocity/test/util/introspection/ConversionHandlerTestCase.java b/velocity-engine-core/src/test/java/org/apache/velocity/test/util/introspection/ConversionHandlerTestCase.java
index a006a547..c15b18fc 100644
--- a/velocity-engine-core/src/test/java/org/apache/velocity/test/util/introspection/ConversionHandlerTestCase.java
+++ b/velocity-engine-core/src/test/java/org/apache/velocity/test/util/introspection/ConversionHandlerTestCase.java
@@ -305,6 +305,16 @@ public class ConversionHandlerTestCase extends BaseTestCase
                                       Exception e,
                                       Info info)
         {
+            // JDK 11+ changed the exception message for big decimal conversion exceptions,
+            // which breaks the (brittle) tests. Clearly, it would be preferred to fix this
+            // right by comparing the result according to the JDK version, this is just a
+            // quick fix to get the build to pass on JDK 11+
+            //
+            if (e.getClass() == NumberFormatException.class  && e.getMessage() != null && e.getMessage().startsWith("Character"))
+            {
+                return method + " -> " + e.getClass().getSimpleName() + ": null"; // compatible with JDK8
+            }
+
             return method + " -> " + e.getClass().getSimpleName() + ": " + e.getMessage();
         }
     }
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