added one more assertion for convenience.

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@13172 71c3de6d-444a-0410-be80-ed276b4c234a

test/src/main/java/org/jvnet/hudson/test/HudsonTestCase.java

@@ -248,6 +248,9 @@ public abstract class HudsonTestCase extends TestCase {
         new BufferedReader(new InputStreamReader(System.in)).readLine();
     }
 
+    /**
+     * Asserts that the outcome of the build is a specific outcome.
+     */
     public void assertBuildStatus(Result status, Run r) throws Exception {
         if(status==r.getResult())
             return;
@@ -257,6 +260,18 @@ public abstract class HudsonTestCase extends TestCase {
         assertEquals(status,r.getResult());
     }
 
+    /**
+     * Asserts that the console output of the build contains the given substring.
+     */
+    public void assertLogContains(String substring, Run run) throws Exception {
+        String log = run.getLog();
+        if(log.contains(substring))
+            return; // good!
+
+        System.out.println(log);
+        fail("Console output of "+run+" didn't contain "+substring);
+    }
+
 //
 // recipe methods. Control the test environments.
 //