Github user HyukjinKwon commented on a diff in the pull request:
https://github.com/apache/spark/pull/17987#discussion_r116531475
--- Diff: core/src/test/scala/org/apache/spark/SparkContextSuite.scala ---
@@ -301,13 +301,13 @@ class SparkContextSuite extends SparkFunSuite with
LocalSparkContext with Eventu
sc = new SparkContext(new
SparkConf().setAppName("test").setMaster("local"))
sc.addJar(tmpJar.getAbsolutePath)
- // Invaid jar path will only print the error log, will not add to file
server.
+ // Invalid jar path will only print the error log, will not add to
file server.
sc.addJar("dummy.jar")
sc.addJar("")
sc.addJar(tmpDir.getAbsolutePath)
- sc.listJars().size should be (1)
- sc.listJars().head should include (tmpJar.getName)
+ assert(sc.listJars().size == 1)
--- End diff --
This gives a better error message.
**Before**
```
2 was not equal to 1 (SparkContextSuite.scala:309)
```
**After**
```
ArrayBuffer("spark://172.24.17.81:2411/jars/spark-7e45e7da-ca1b-4e33-8a64-1fb44860ee76",
"spark://172.24.17.81:2411/jars/test7132431731623035882.jar") had size 2
instead of expected size 1 (SparkContextSuite.scala:309)
```
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