[SPARK-5882][GRAPHX] Add a test for GraphLoader.edgeListFile

Author: Takeshi YAMAMURO <linguin.m.s@gmail.com>

Closes #4674 from maropu/AddGraphLoaderSuite.

1 files changed, 47 insertions, 0 deletions

diff --git a/graphx/src/test/scala/org/apache/spark/graphx/GraphLoaderSuite.scala b/graphx/src/test/scala/org/apache/spark/graphx/GraphLoaderSuite.scala
new file mode 100644
index 0000000000..bff9f328d4
--- /dev/null
+++ b/graphx/src/test/scala/org/apache/spark/graphx/GraphLoaderSuite.scala
@@ -0,0 +1,47 @@
+/*
+ * 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.spark.graphx
+
+import java.io.File
+import java.io.FileOutputStream
+import java.io.OutputStreamWriter
+
+import org.apache.spark.SparkFunSuite
+import org.apache.spark.util.Utils
+
+class GraphLoaderSuite extends SparkFunSuite with LocalSparkContext {
+
+  test("GraphLoader.edgeListFile") {
+    withSpark { sc =>
+      val tmpDir = Utils.createTempDir()
+      val graphFile = new File(tmpDir.getAbsolutePath, "graph.txt")
+      val writer = new OutputStreamWriter(new FileOutputStream(graphFile))
+      for (i <- (1 until 101)) writer.write(s"$i 0\n")
+      writer.close()
+      try {
+        val graph = GraphLoader.edgeListFile(sc, tmpDir.getAbsolutePath)
+        val neighborAttrSums = graph.aggregateMessages[Int](
+          ctx => ctx.sendToDst(ctx.srcAttr),
+          _ + _)
+        assert(neighborAttrSums.collect.toSet === Set((0: VertexId, 100)))
+      } finally {
+        Utils.deleteRecursively(tmpDir)
+      }
+    }
+  }
+}