diff --git a/proposal/myrmidon/etc/testcases/org/apache/antlib/core/if.ant b/proposal/myrmidon/etc/testcases/org/apache/antlib/core/if.ant
new file mode 100644
index 000000000..b3caca2af
--- /dev/null
+++ b/proposal/myrmidon/etc/testcases/org/apache/antlib/core/if.ant
@@ -0,0 +1,63 @@
+<project version="2.0">
+    <target name="true-prop">
+        <property name="test-prop" value="true"/>
+        <if test="test-prop">
+            <log>test-prop is set</log>
+        </if>
+        <if not-test="test-prop">
+            <log>test-prop is not set</log>
+        </if>
+    </target>
+
+    <target name="set-prop">
+        <property name="test-prop" value="some value"/>
+        <if test="test-prop">
+            <log>test-prop is set</log>
+        </if>
+        <if not-test="test-prop">
+            <log>test-prop is not set</log>
+        </if>
+    </target>
+
+    <target name="not-set-prop">
+        <if test="test-prop">
+            <log>test-prop is set</log>
+        </if>
+        <if not-test="test-prop">
+            <log>test-prop is not set</log>
+        </if>
+    </target>
+
+    <target name="false-prop">
+        <property name="test-prop" value="false"/>
+        <if test="test-prop">
+            <log>test-prop is set</log>
+        </if>
+        <if not-test="test-prop">
+            <log>test-prop is not set</log>
+        </if>
+    </target>
+
+    <target name="multiple-nested-tasks">
+        <property name="test-prop" value="true"/>
+        <if test="test-prop">
+            <log>task 1</log>
+            <log>task 2</log>
+            <log>task 3</log>
+            <log>task 4</log>
+        </if>
+    </target>
+
+    <target name="no-condition">
+        <if>
+            <log>no go</log>
+        </if>
+    </target>
+
+    <target name="too-many-conditions">
+        <if test="test-prop" not-test="test-prop">
+            <log>no go</log>
+        </if>
+    </target>
+
+</project>
\ No newline at end of file
diff --git a/proposal/myrmidon/src/java/org/apache/antlib/core/IfTask.java b/proposal/myrmidon/src/java/org/apache/antlib/core/IfTask.java
index d6272638d..9472a0cf9 100644
--- a/proposal/myrmidon/src/java/org/apache/antlib/core/IfTask.java
+++ b/proposal/myrmidon/src/java/org/apache/antlib/core/IfTask.java
@@ -74,9 +74,16 @@ public class IfTask
             throw new TaskException( message );
         }
 
+        // Evaluate the condition
+        if( ! m_condition.evaluate( getContext() ) )
+        {
+            return;
+        }
+
         final Configuration[] tasks =
             (Configuration[])m_tasks.toArray( new Configuration[ m_tasks.size() ] );
 
+        // TODO - don't use getService()
         final ExecutionFrame frame = (ExecutionFrame)getService( ExecutionFrame.class );
         final Executor executor = (Executor)getService( Executor.class );
 
diff --git a/proposal/myrmidon/src/test/org/apache/antlib/core/IfTest.java b/proposal/myrmidon/src/test/org/apache/antlib/core/IfTest.java
new file mode 100644
index 000000000..c4022d2e2
--- /dev/null
+++ b/proposal/myrmidon/src/test/org/apache/antlib/core/IfTest.java
@@ -0,0 +1,99 @@
+/*
+ * Copyright (C) The Apache Software Foundation. All rights reserved.
+ *
+ * This software is published under the terms of the Apache Software License
+ * version 1.1, a copy of which has been included  with this distribution in
+ * the LICENSE.txt file.
+ */
+package org.apache.antlib.core;
+
+import java.io.File;
+import org.apache.avalon.excalibur.i18n.ResourceManager;
+import org.apache.avalon.excalibur.i18n.Resources;
+import org.apache.myrmidon.AbstractProjectTest;
+import org.apache.myrmidon.LogMessageTracker;
+
+/**
+ * Test cases for the <if> task.
+ *
+ * @author <a href="mailto:adammurdoch@apache.org">Adam Murdoch</a>
+ * @version $Revision$ $Date$
+ */
+public class IfTest
+    extends AbstractProjectTest
+{
+    private final static Resources REZ
+        = ResourceManager.getPackageResources( IfTest.class );
+
+    public IfTest( String name )
+    {
+        super( name );
+    }
+
+    /**
+     * Test checking whether a property is set and not 'false'.
+     */
+    public void testConditions()
+        throws Exception
+    {
+        final File projectFile = getTestResource( "if.ant" );
+
+        // Test when property is set to 'true'
+        LogMessageTracker listener = new LogMessageTracker();
+        listener.addExpectedMessage( "true-prop", "test-prop is set" );
+        executeTarget( projectFile, "true-prop", listener );
+
+        // Test when property is set to a value other than 'true' or 'false'
+        listener = new LogMessageTracker();
+        listener.addExpectedMessage( "set-prop", "test-prop is set" );
+        executeTarget( projectFile, "set-prop", listener );
+
+        // Test when property is set to 'false'
+        listener = new LogMessageTracker();
+        listener.addExpectedMessage( "false-prop", "test-prop is not set" );
+        executeTarget( projectFile, "false-prop", listener );
+
+        // Test when property is not set
+        listener = new LogMessageTracker();
+        listener.addExpectedMessage( "not-set-prop", "test-prop is not set" );
+        executeTarget( projectFile, "not-set-prop", listener );
+    }
+
+    /**
+     * Tests that the <if> task can handle multiple nested tasks.
+     */
+    public void testMultipleTasks() throws Exception
+    {
+        final File projectFile = getTestResource( "if.ant" );
+
+        // Test when property is not set
+        LogMessageTracker listener = new LogMessageTracker();
+        listener.addExpectedMessage( "multiple-nested-tasks", "task 1" );
+        listener.addExpectedMessage( "multiple-nested-tasks", "task 2" );
+        listener.addExpectedMessage( "multiple-nested-tasks", "task 3" );
+        listener.addExpectedMessage( "multiple-nested-tasks", "task 4" );
+        executeTarget( projectFile, "multiple-nested-tasks", listener );
+    }
+
+    /**
+     * Tests validation.
+     */
+    public void testValidation() throws Exception
+    {
+        final File projectFile = getTestResource( "if.ant" );
+
+        // Check for missing condition
+        String message = REZ.getString( "if.no-condition.error" );
+        executeTargetExpectError( projectFile, "no-condition", message );
+
+        // Check for too many conditions
+        String[] messages =
+        {
+            null,
+            null,
+            REZ.getString( "if.ifelse-duplicate.error" )
+        };
+        executeTargetExpectError( projectFile, "too-many-conditions", messages );
+    }
+
+}
diff --git a/proposal/myrmidon/src/testcases/org/apache/antlib/core/IfTest.java b/proposal/myrmidon/src/testcases/org/apache/antlib/core/IfTest.java
new file mode 100644
index 000000000..c4022d2e2
--- /dev/null
+++ b/proposal/myrmidon/src/testcases/org/apache/antlib/core/IfTest.java
@@ -0,0 +1,99 @@
+/*
+ * Copyright (C) The Apache Software Foundation. All rights reserved.
+ *
+ * This software is published under the terms of the Apache Software License
+ * version 1.1, a copy of which has been included  with this distribution in
+ * the LICENSE.txt file.
+ */
+package org.apache.antlib.core;
+
+import java.io.File;
+import org.apache.avalon.excalibur.i18n.ResourceManager;
+import org.apache.avalon.excalibur.i18n.Resources;
+import org.apache.myrmidon.AbstractProjectTest;
+import org.apache.myrmidon.LogMessageTracker;
+
+/**
+ * Test cases for the <if> task.
+ *
+ * @author <a href="mailto:adammurdoch@apache.org">Adam Murdoch</a>
+ * @version $Revision$ $Date$
+ */
+public class IfTest
+    extends AbstractProjectTest
+{
+    private final static Resources REZ
+        = ResourceManager.getPackageResources( IfTest.class );
+
+    public IfTest( String name )
+    {
+        super( name );
+    }
+
+    /**
+     * Test checking whether a property is set and not 'false'.
+     */
+    public void testConditions()
+        throws Exception
+    {
+        final File projectFile = getTestResource( "if.ant" );
+
+        // Test when property is set to 'true'
+        LogMessageTracker listener = new LogMessageTracker();
+        listener.addExpectedMessage( "true-prop", "test-prop is set" );
+        executeTarget( projectFile, "true-prop", listener );
+
+        // Test when property is set to a value other than 'true' or 'false'
+        listener = new LogMessageTracker();
+        listener.addExpectedMessage( "set-prop", "test-prop is set" );
+        executeTarget( projectFile, "set-prop", listener );
+
+        // Test when property is set to 'false'
+        listener = new LogMessageTracker();
+        listener.addExpectedMessage( "false-prop", "test-prop is not set" );
+        executeTarget( projectFile, "false-prop", listener );
+
+        // Test when property is not set
+        listener = new LogMessageTracker();
+        listener.addExpectedMessage( "not-set-prop", "test-prop is not set" );
+        executeTarget( projectFile, "not-set-prop", listener );
+    }
+
+    /**
+     * Tests that the <if> task can handle multiple nested tasks.
+     */
+    public void testMultipleTasks() throws Exception
+    {
+        final File projectFile = getTestResource( "if.ant" );
+
+        // Test when property is not set
+        LogMessageTracker listener = new LogMessageTracker();
+        listener.addExpectedMessage( "multiple-nested-tasks", "task 1" );
+        listener.addExpectedMessage( "multiple-nested-tasks", "task 2" );
+        listener.addExpectedMessage( "multiple-nested-tasks", "task 3" );
+        listener.addExpectedMessage( "multiple-nested-tasks", "task 4" );
+        executeTarget( projectFile, "multiple-nested-tasks", listener );
+    }
+
+    /**
+     * Tests validation.
+     */
+    public void testValidation() throws Exception
+    {
+        final File projectFile = getTestResource( "if.ant" );
+
+        // Check for missing condition
+        String message = REZ.getString( "if.no-condition.error" );
+        executeTargetExpectError( projectFile, "no-condition", message );
+
+        // Check for too many conditions
+        String[] messages =
+        {
+            null,
+            null,
+            REZ.getString( "if.ifelse-duplicate.error" )
+        };
+        executeTargetExpectError( projectFile, "too-many-conditions", messages );
+    }
+
+}