Port a previously-failing anti-join test from java to C++

Signed-off-by: Muhammad Haseeb <[email protected]>

cpp/tests/join/mixed_join_tests.cu

@@ -915,3 +915,18 @@ TYPED_TEST(MixedLeftAntiJoinTest, AsymmetricLeftLargerEquality)
              left_zero_eq_right_zero,
              {0, 1, 3});
 }
+
+TYPED_TEST(MixedLeftAntiJoinTest, MixedLeftAntiJoinGatherMap)
+{
+  auto const col_ref_left_1  = cudf::ast::column_reference(0, cudf::ast::table_reference::LEFT);
+  auto const col_ref_right_1 = cudf::ast::column_reference(0, cudf::ast::table_reference::RIGHT);
+  auto left_one_greater_right_one =
+    cudf::ast::operation(cudf::ast::ast_operator::GREATER, col_ref_left_1, col_ref_right_1);
+
+  this->test({{2, 3, 9, 0, 1, 7, 4, 6, 5, 8}, {1, 2, 3, 4, 5, 6, 7, 8, 9, 0}},
+             {{6, 5, 9, 8, 10, 32}, {0, 1, 2, 3, 4, 5}, {7, 8, 9, 0, 1, 2}},
+             {0},
+             {1},
+             left_one_greater_right_one,
+             {0, 1, 3, 4, 5, 6, 9});
+}