skip test if coverage is enabled

Signed-off-by: Lukas Jungmann <lukas.jungmann@oracle.com>

jaxb-ri/xjc/src/test/java/com/sun/tools/xjc/addon/code_injector/PluginImplTest.java

diff --git a/jaxb-ri/xjc/src/test/java/com/sun/tools/xjc/addon/code_injector/PluginImplTest.java b/jaxb-ri/xjc/src/test/java/com/sun/tools/xjc/addon/code_injector/PluginImplTest.java
index 12f7229..743069e 100644
--- a/jaxb-ri/xjc/src/test/java/com/sun/tools/xjc/addon/code_injector/PluginImplTest.java
+++ b/jaxb-ri/xjc/src/test/java/com/sun/tools/xjc/addon/code_injector/PluginImplTest.java
@@ -33,6 +33,11 @@
 
     @Test
     public void pluginRunTest(final @Mocked Outline model, @Mocked Options opt, @Mocked ErrorHandler errorHandler) {
+        if (System.getProperty("jacoco-build") != null) {
+            // JMockit does not work if coverage is enabled
+            // see https://github.com/jmockit/jmockit1/issues/615
+            return;
+        }
 
         new Expectations() {{
             Collection<? extends CustomizableOutline> target = Collections.emptyList();