diff --git a/src/tests/antunit/taskdefs/optional/script/scriptdef-test.xml b/src/tests/antunit/taskdefs/optional/script/scriptdef-test.xml
index 67caa46c3..74a8e42bb 100644
--- a/src/tests/antunit/taskdefs/optional/script/scriptdef-test.xml
+++ b/src/tests/antunit/taskdefs/optional/script/scriptdef-test.xml
@@ -11,6 +11,13 @@
   <target name="tearDown">
   </target>
 
+  <condition property="prereqs-ok">
+    <or>
+      <available classname="org.apache.bsf.BSFManager"/>
+      <available classname="javax.script.ScriptEngineManager"/>
+    </or>
+  </condition>
+
   <property name="script.manager" value="auto" />
 
   <string id="script.code">
@@ -35,19 +42,19 @@
 
 
   <!--purely to test that everything works -->
-  <target name="testInline">
+  <target name="testInline" if="prereqs-ok">
     <js>self.log("Hello");</js>
     <scripttest/>
   </target>
 
-  <target name="testStringResource">
+  <target name="testStringResource" if="prereqs-ok">
     <js>
       <string value='self.log("Ant version =${ant.version}");' />
     </js>
     <scripttest/>
   </target>
 
-  <target name="testStringResourceRef">
+  <target name="testStringResourceRef" if="prereqs-ok">
     <js>
       <string refid="script.code" />
     </js>
@@ -55,7 +62,7 @@
     <assertPropSet />
   </target>
 
-  <target name="testStringResourceInline">
+  <target name="testStringResourceInline" if="prereqs-ok">
     <js>
       <string>
         self.log("Ant version =${ant.version}");
@@ -66,7 +73,7 @@
     <assertPropSet/>
   </target>
 
-  <target name="testPropertyResource">
+  <target name="testPropertyResource" if="prereqs-ok">
     <js>
       <propertyresource name="prop" />
     </js>
@@ -74,7 +81,7 @@
     <assertPropSet/>
   </target>
 
-  <target name="testMixedResources">
+  <target name="testMixedResources" if="prereqs-ok">
     <js>
       <string refid="script.code" />
       <propertyresource name="prop" />
@@ -85,4 +92,4 @@
     <scripttest/>
     <assertPropSet name="property2" />
   </target>
-</project>
\ No newline at end of file
+</project>
diff --git a/src/tests/antunit/taskdefs/propertyhelper-test.xml b/src/tests/antunit/taskdefs/propertyhelper-test.xml
index bb65814dd..5edaa3ccc 100644
--- a/src/tests/antunit/taskdefs/propertyhelper-test.xml
+++ b/src/tests/antunit/taskdefs/propertyhelper-test.xml
@@ -2,7 +2,9 @@
   <!-- each test verifies that the PropertyEvaluator delegate works -->
   <import file="../antunit-base.xml" />
 
-  <target name="setUp" unless="setup.complete">
+  <available property="prereqs-ok" classname="org.apache.bsf.BSFManager"/>
+
+  <target name="setUp" unless="setup.complete" if="prereqs-ok">
     <script language="beanshell" manager="bsf">
       import org.apache.tools.ant.PropertyHelper;
       public class MapEvaluator implements PropertyHelper.PropertyEvaluator {
@@ -25,7 +27,7 @@
     <property name="setup.complete" value="true" />
   </target>
 
-  <target name="testValueTypes" depends="setUp">
+  <target name="testValueTypes" depends="setUp" if="prereqs-ok">
     <!-- verify BC, strings -->
     <au:assertPropertyEquals name="string" value="${STRING}" />
 
@@ -45,14 +47,14 @@
     <au:assertPropertyEquals name="int2" value="${int}" />
   </target>
 
-  <target name="testNull" depends="setUp">
+  <target name="testNull" depends="setUp" if="prereqs-ok">
     <!-- demonstrate that a null value always implies a nonexistent property -->
     <au:assertFalse>
       <isset property="null" />
     </au:assertFalse>
   </target>
 
-  <target name="testAvailable" depends="setUp">
+  <target name="testAvailable" depends="setUp" if="prereqs-ok">
     <!-- verify the available task can set a non-string property -->
     <available file="${ant.file}" type="file" property="available.string" value="bc" />
     <au:assertPropertyEquals name="available.string" value="bc" />
@@ -60,7 +62,7 @@
     <au:assertPropertyEquals name="available.object" value="${OBJECT}" />
   </target>
 
-  <target name="testCondition" depends="setUp">
+  <target name="testCondition" depends="setUp" if="prereqs-ok">
     <!-- verify the condition task can set a non-string property -->
     <echo>$${ant.file}=${ant.file}</echo>
     <condition property="condition.true.string">
@@ -81,14 +83,14 @@
     <au:assertPropertyEquals name="condition.else.int" value="${INT}" />
   </target>
 
-  <target name="testEmbeddedNonString">
+  <target name="testEmbeddedNonString" if="prereqs-ok">
     <!-- verify that a property embedded in a string is a substring -->
     <au:assertTrue>
       <equals arg1="@${int}@" arg2="@1@" />
     </au:assertTrue>
   </target>
 
-  <target name="testLoadProperties">
+  <target name="testLoadProperties" if="prereqs-ok">
     <au:assertFalse>
       <isset property="object2" />
     </au:assertFalse>