1 files changed, 67 insertions, 0 deletions
diff --git a/sca-java-2.x/branches/2.0/modules/core/src/test/java/org/apache/tuscany/sca/core/invocation/impl/PhaseSorterTestCase.java b/sca-java-2.x/branches/2.0/modules/core/src/test/java/org/apache/tuscany/sca/core/invocation/impl/PhaseSorterTestCase.java
new file mode 100644
index 0000000000..c268e133e4
--- /dev/null
+++ b/sca-java-2.x/branches/2.0/modules/core/src/test/java/org/apache/tuscany/sca/core/invocation/impl/PhaseSorterTestCase.java
@@ -0,0 +1,67 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.tuscany.sca.core.invocation.impl;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+
+import java.util.Arrays;
+import java.util.List;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+
+public class PhaseSorterTestCase {
+    private PhaseSorter<String> graph;
+
+    @Before
+    public void setUp() throws Exception {
+        graph = new PhaseSorter<String>();
+    }
+
+    @Test
+    public void testSort() {
+        graph.addEdge("a", "b");
+        graph.addEdge("a", "c");
+        graph.addEdge("c", "d");
+        graph.addEdge("b", "c");
+        List<String> order = graph.topologicalSort(true);
+        assertEquals(Arrays.asList("a", "b", "c", "d"), order);
+        assertTrue(!graph.getVertices().isEmpty());
+
+        graph.addEdge("d", "a");
+        try {
+            order = graph.topologicalSort(true);
+            assertTrue("Should have failed", false);
+        } catch (IllegalArgumentException e) {
+            assertTrue(true);
+        }
+
+        graph.removeEdge("d", "a");
+        order = graph.topologicalSort(false);
+        assertEquals(Arrays.asList("a", "b", "c", "d"), order);
+        assertTrue(graph.getVertices().isEmpty());
+    }
+
+    @After
+    public void tearDown() throws Exception {
+    }
+
+}