Add test cases for ranges end with Int.MaxValue or Int.MinValue

Author: advancedxy

core/src/test/scala/org/apache/spark/rdd/ParallelCollectionSplitSuite.scala

@@ -227,4 +227,26 @@ class ParallelCollectionSplitSuite extends FunSuite with Checkers {
     assert(slices.map(_.size).reduceLeft(_+_) === 100)
     assert(slices.forall(_.isInstanceOf[NumericRange[_]]))
   }
+
+  test("inclusive ranges with Int.MaxValue and Int.MinValue") {
+    val data1 = 1 to Int.MaxValue
+    val slices1 = ParallelCollectionRDD.slice(data1, 3)
+    assert(slices1.size === 3)
+    assert(slices1.map(_.size).sum === Int.MaxValue)
+    val data2 = -2 to Int.MinValue by -1
+    val slices2 = ParallelCollectionRDD.slice(data2, 3)
+    assert(slices2.size == 3)
+    assert(slices2.map(_.size).sum === Int.MaxValue)
+  }
+
+  test("empty ranges with Int.MaxValue and Int.MinValue") {
+    val data1 = Int.MaxValue until Int.MaxValue
+    val slices1 = ParallelCollectionRDD.slice(data1, 5)
+    assert(slices1.size === 5)
+    for (i <- 0 until 5) assert(slices1(i).size === 0)
+    val data2 = Int.MaxValue until Int.MaxValue
+    val slices2 = ParallelCollectionRDD.slice(data2, 5)
+    assert(slices2.size === 5)
+    for (i <- 0 until 5) assert(slices2(i).size === 0)
+  }
 }