Github user rmetzger commented on a diff in the pull request:
https://github.com/apache/flink/pull/440#discussion_r25476732
--- Diff:
flink-staging/flink-gelly/src/test/java/org/apache/flink/graph/test/DegreesWithExceptionITCase.java
---
@@ -0,0 +1,123 @@
+/*
+ * 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.flink.graph.test;
+
+import org.apache.flink.api.java.ExecutionEnvironment;
+import org.apache.flink.graph.Graph;
+import org.junit.Test;
+
+import java.util.NoSuchElementException;
+
+public class DegreesWithExceptionITCase {
+
+ @Test
+ public void testOutDegreesInvalidEdgeSrcId() throws Exception {
+ /*
+ * Test outDegrees() with an edge having a srcId that does not
exist in the vertex DataSet
+ */
+ final ExecutionEnvironment env =
ExecutionEnvironment.getExecutionEnvironment();
+
+ Graph<Long, Long, Long> graph =
Graph.fromDataSet(TestGraphUtils.getLongLongVertexData(env),
+
TestGraphUtils.getLongLongEdgeInvalidSrcData(env), env);
+
+ try {
+ graph.outDegrees().print();
+ env.execute();
+ } catch (Exception e) {
+ assert e.getCause().getMessage().equals("The edge
src/trg id could not be found within the vertexIds");
--- End diff --
I don't think we are using Java assertions in test cases.
We usually use junit assertions, such as `Assert.assertTrue()` in testcases.
I'm not even sure if assertions are always enabled when running tests
through maven.
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