internalize testdata for JsonSuite SPARK-26745 test

Author: Branden Smith

sql/core/src/test/resources/test-data/with-empty-line.json

@@ -2427,14 +2427,15 @@ class JsonSuite extends QueryTest with SharedSQLContext with TestJsonData {
   }
 
   test("SPARK-26745: count() for non-multiline input with empty lines") {
-    val df = spark.read.json(testFile("test-data/with-empty-line.json"))
-    val withEmptyLineData = Row(1, 2, 3) :: Row(4, 5, 6) :: Row(7, 8, 9) :: Nil
-    // important to do this .count() first, prior to caching/persisting/computing/collecting, to
-    // test the non-parsed-count pathway
-    assert(df.count() === withEmptyLineData.length,
-           "JSON DataFrame unparsed-count should exclude whitespace-only lines")
-    df.createOrReplaceTempView("jsonWithEmptyLineTable")
-    checkAnswer(sql("select * from jsonWithEmptyLineTable"), withEmptyLineData)
+    withTempPath { tempPath =>
+      val path = tempPath.getCanonicalPath
+      Seq("""{ "a" : 1 }""", "", """     { "a" : 2 }""", " \t ")
+        .toDS()
+        .repartition(1)
+        .write
+        .text(path)
+      assert(spark.read.json(path).count() === 2)
+    }
   }
 
   test("SPARK-25040: empty strings should be disallowed") {