diff --git a/docs/assertions.html b/docs/assertions.html
index acf66ec..3a391c4 100644
--- a/docs/assertions.html
+++ b/docs/assertions.html
@@ -633,6 +633,44 @@
         </tr>
     </table>
 
+    <h2><a name="assertResourceContains">assertResourceContains</a></h2>
+
+    <p>Asserts that a resource's content includes a given string.</p>
+
+    <table border="1" cellpadding="2" cellspacing="0">
+      <tr>
+        <td valign="top"><b>Attribute</b></td>
+        <td valign="top"><b>Description</b></td>
+        <td align="center" valign="top"><b>Required</b></td>
+      </tr>
+      <tr>
+        <td valign="top">resource</td>
+        <td valign="top">Location of the resource to load.</td>
+        <td valign="top" align="center">Yes</td>
+      </tr>
+      <tr>
+        <td valign="top">value</td>
+        <td valign="top">The text to search for.</td>
+        <td valign="top" align="center">Yes</td>
+      </tr>
+        <tr>
+          <td valign="top">casesensitive</td>
+          <td valign="top">
+            Perform a case sensitive match.
+            Default is true.
+          </td>
+          <td align="center">No.</td>
+        </tr>
+      <tr>
+        <td valign="top">message</td>
+        <td valign="top">Message for the exception if the condition
+          doesn't hold true.  Defaults to "Expected resource
+          '<em>resource</em>' to contain value '<em>value</em>' but
+          was '<em>content of resource</em>'".</td>
+        <td align="center">No.</td>
+      </tr>
+    </table>
+
     <hr/>
   </body>
 </html>
diff --git a/src/main/org/apache/ant/antunit/antlib.xml b/src/main/org/apache/ant/antunit/antlib.xml
index 0dfc15c..82d2fb5 100644
--- a/src/main/org/apache/ant/antunit/antlib.xml
+++ b/src/main/org/apache/ant/antunit/antlib.xml
@@ -132,16 +132,29 @@ under the License.
   </macrodef>
 
   <macrodef name="assertResourceContains">
-	<attribute name="resource"/>
-	<attribute name="value"/>
-	<attribute name="casesensitive" default="true"/>
-	<attribute name="message"
-	  default="Expected resource '@{resource}' to contain value '@{value}' but was '${@{resource}}'"/>
+    <attribute name="resource"/>
+    <attribute name="value"/>
+    <attribute name="casesensitive" default="true"/>
+    <attribute name="message"
+	       default="Expected resource '@{resource}' to contain value '@{value}' but was '${@{resource}}'"/>
     <sequential>
-	  <au:assertTrue message="@{message}">
-	    <resourcecontains resource="@{resource}" substring="@{value}"/>
-	  </au:assertTrue>
-	</sequential>
+      <au:assertTrue message="@{message}">
+	<resourcecontains resource="@{resource}" substring="@{value}"/>
+      </au:assertTrue>
+    </sequential>
+  </macrodef>
+
+  <macrodef name="assertResourceDoesntContain">
+    <attribute name="resource"/>
+    <attribute name="value"/>
+    <attribute name="casesensitive" default="true"/>
+    <attribute name="message"
+	       default="Didn't expect resource '@{resource}' to contain value '@{value}' but was '${@{resource}}'"/>
+    <sequential>
+      <au:assertFalse message="@{message}">
+	<resourcecontains resource="@{resource}" substring="@{value}"/>
+      </au:assertFalse>
+    </sequential>
   </macrodef>
 
   <macrodef name="assertDestIsUptodate" backtrace="false">