1 files changed, 92 insertions, 0 deletions
diff --git a/src/arrow/r/tests/testthat/test-dplyr-count.R b/src/arrow/r/tests/testthat/test-dplyr-count.R
new file mode 100644
index 000000000..8af9b57aa
--- /dev/null
+++ b/src/arrow/r/tests/testthat/test-dplyr-count.R
@@ -0,0 +1,92 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+
+skip_if_not_available("dataset")
+
+library(dplyr, warn.conflicts = FALSE)
+
+tbl <- example_data
+tbl$some_grouping <- rep(c(1, 2), 5)
+
+test_that("count/tally", {
+  compare_dplyr_binding(
+    .input %>%
+      count() %>%
+      collect(),
+    tbl
+  )
+
+  compare_dplyr_binding(
+    .input %>%
+      tally() %>%
+      collect(),
+    tbl
+  )
+})
+
+test_that("count/tally with wt and grouped data", {
+  compare_dplyr_binding(
+    .input %>%
+      group_by(some_grouping) %>%
+      count(wt = int) %>%
+      collect(),
+    tbl
+  )
+
+  compare_dplyr_binding(
+    .input %>%
+      group_by(some_grouping) %>%
+      tally(wt = int) %>%
+      collect(),
+    tbl
+  )
+})
+
+test_that("count/tally with sort", {
+  compare_dplyr_binding(
+    .input %>%
+      group_by(some_grouping) %>%
+      count(wt = int, sort = TRUE) %>%
+      collect(),
+    tbl
+  )
+
+  compare_dplyr_binding(
+    .input %>%
+      group_by(some_grouping) %>%
+      tally(wt = int, sort = TRUE) %>%
+      collect(),
+    tbl
+  )
+})
+
+test_that("count/tally with name arg", {
+  compare_dplyr_binding(
+    .input %>%
+      count(name = "new_col") %>%
+      collect(),
+    tbl
+  )
+
+  compare_dplyr_binding(
+    .input %>%
+      tally(name = "new_col") %>%
+      collect(),
+    tbl
+  )
+})