Update Java string concatenate test for single column (#8330)

to stringConcatenate when using a scalar separator. Reference #8282 changed to throw an exception if only a single column is passed in to the stringConcatenate using scalar separator. Update our Java test for that functionality. Signed-off-by: Thomas Graves <[email protected]> Authors: - Thomas Graves (https://github.com/tgravescs) Approvers: - Robert (Bobby) Evans (https://github.com/revans2) - Jason Lowe (https://github.com/jlowe) URL: #8330
rapidsai · May 24, 2021 · b1d7788 · b1d7788
1 parent e555643
commit b1d7788
Showing 1 changed file with 10 additions and 9 deletions.
diff --git a/java/src/test/java/ai/rapids/cudf/ColumnVectorTest.java b/java/src/test/java/ai/rapids/cudf/ColumnVectorTest.java
@@ -2099,15 +2099,16 @@ void testStringConcatWithNulls() {
       assertColumnsAreEqual(concat, e_concat);
     }
 
-    try (ColumnVector v = ColumnVector.fromStrings("a", "B", "cd", "\u0480\u0481", "E\tf",
-        "g\nH", "IJ\"\u0100\u0101\u0500\u0501",
-        "kl m", "Nop1", "\\qRs2", null,
-        "3tuV\'", "wX4Yz", "\ud720\ud721");
-         Scalar emptyString = Scalar.fromString("");
-         Scalar nullSubstitute = Scalar.fromString("NULL");
-         ColumnVector concat = ColumnVector.stringConcatenate(emptyString, nullSubstitute, new ColumnView[]{v})) {
-      assertColumnsAreEqual(v, concat);
-    }
+    assertThrows(CudfException.class, () -> {
+      try (ColumnVector v = ColumnVector.fromStrings("a", "B", "cd", "\u0480\u0481", "E\tf",
+          "g\nH", "IJ\"\u0100\u0101\u0500\u0501",
+          "kl m", "Nop1", "\\qRs2", null,
+          "3tuV\'", "wX4Yz", "\ud720\ud721");
+           Scalar emptyString = Scalar.fromString("");
+           Scalar nullSubstitute = Scalar.fromString("NULL");
+           ColumnVector concat = ColumnVector.stringConcatenate(emptyString, nullSubstitute, new ColumnView[]{v})) {
+      }
+    });
   }
 
   @Test