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diff --git a/src/arrow/r/tests/testthat/test-json.R b/src/arrow/r/tests/testthat/test-json.R
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+# 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("json")
+
+test_that("Can read json file with scalars columns (ARROW-5503)", {
+ tf <- tempfile()
+ on.exit(unlink(tf))
+ writeLines('
+ { "hello": 3.5, "world": false, "yo": "thing" }
+ { "hello": 3.25, "world": null }
+ { "hello": 3.125, "world": null, "yo": "\u5fcd" }
+ { "hello": 0.0, "world": true, "yo": null }
+ ', tf, useBytes = TRUE)
+
+ tab1 <- read_json_arrow(tf, as_data_frame = FALSE)
+ tab2 <- read_json_arrow(mmap_open(tf), as_data_frame = FALSE)
+ tab3 <- read_json_arrow(ReadableFile$create(tf), as_data_frame = FALSE)
+
+ expect_equal(tab1, tab2)
+ expect_equal(tab1, tab3)
+
+ expect_equal(
+ tab1$schema,
+ schema(hello = float64(), world = boolean(), yo = utf8())
+ )
+ tib <- as.data.frame(tab1)
+ expect_equal(tib$hello, c(3.5, 3.25, 3.125, 0))
+ expect_equal(tib$world, c(FALSE, NA, NA, TRUE))
+ expect_equal(tib$yo, c("thing", NA, "\u5fcd", NA))
+})
+
+test_that("read_json_arrow() converts to tibble", {
+ tf <- tempfile()
+ on.exit(unlink(tf))
+ writeLines('
+ { "hello": 3.5, "world": false, "yo": "thing" }
+ { "hello": 3.25, "world": null }
+ { "hello": 3.125, "world": null, "yo": "\u5fcd" }
+ { "hello": 0.0, "world": true, "yo": null }
+ ', tf, useBytes = TRUE)
+
+ tab1 <- read_json_arrow(tf)
+ tab2 <- read_json_arrow(mmap_open(tf))
+ tab3 <- read_json_arrow(ReadableFile$create(tf))
+
+ expect_s3_class(tab1, "tbl_df")
+ expect_s3_class(tab2, "tbl_df")
+ expect_s3_class(tab3, "tbl_df")
+
+ expect_equal(tab1, tab2)
+ expect_equal(tab1, tab3)
+
+ expect_equal(tab1$hello, c(3.5, 3.25, 3.125, 0))
+ expect_equal(tab1$world, c(FALSE, NA, NA, TRUE))
+ expect_equal(tab1$yo, c("thing", NA, "\u5fcd", NA))
+})
+
+test_that("read_json_arrow() supports col_select=", {
+ tf <- tempfile()
+ writeLines('
+ { "hello": 3.5, "world": false, "yo": "thing" }
+ { "hello": 3.25, "world": null }
+ { "hello": 3.125, "world": null, "yo": "\u5fcd" }
+ { "hello": 0.0, "world": true, "yo": null }
+ ', tf)
+
+ tab1 <- read_json_arrow(tf, col_select = c(hello, world))
+ expect_equal(names(tab1), c("hello", "world"))
+
+ tab2 <- read_json_arrow(tf, col_select = 1:2)
+ expect_equal(names(tab2), c("hello", "world"))
+})
+
+test_that("read_json_arrow(schema=) with empty schema", {
+ tf <- tempfile()
+ writeLines('
+ { "hello": 3.5, "world": 2, "third_col": 99}
+ { "hello": 3.25, "world": 5, "third_col": 98}
+ { "hello": 3.125, "world": 8, "third_col": 97 }
+ { "hello": 0.0, "world": 10, "third_col": 96}
+ ', tf)
+
+ tab1 <- read_json_arrow(tf, schema = schema())
+
+ expect_identical(
+ tab1,
+ tibble::tibble(
+ hello = c(3.5, 3.25, 3.125, 0),
+ world = c(2L, 5L, 8L, 10L),
+ third_col = c(99L, 98L, 97L, 96L)
+ )
+ )
+})
+
+test_that("read_json_arrow(schema=) with partial schema", {
+ tf <- tempfile()
+ writeLines('
+ { "hello": 3.5, "world": 2, "third_col": 99}
+ { "hello": 3.25, "world": 5, "third_col": 98}
+ { "hello": 3.125, "world": 8, "third_col": 97 }
+ { "hello": 0.0, "world": 10, "third_col": 96}
+ ', tf)
+
+ tab1 <- read_json_arrow(tf, schema = schema(third_col = float64(), world = float64()))
+
+ expect_identical(
+ tab1,
+ tibble::tibble(
+ third_col = c(99, 98, 97, 96),
+ world = c(2, 5, 8, 10),
+ hello = c(3.5, 3.25, 3.125, 0)
+ )
+ )
+
+ tf2 <- tempfile()
+ writeLines('
+ { "hello": 3.5, "world": 2, "third_col": "99"}
+ { "hello": 3.25, "world": 5, "third_col": "98"}
+ { "hello": 3.125, "world": 8, "third_col": "97"}
+ ', tf2)
+
+ tab2 <- read_json_arrow(tf2, schema = schema(third_col = string(), world = float64()))
+
+ expect_identical(
+ tab2,
+ tibble::tibble(
+ third_col = c("99", "98", "97"),
+ world = c(2, 5, 8),
+ hello = c(3.5, 3.25, 3.125)
+ )
+ )
+})
+
+test_that("read_json_arrow(schema=) with full schema", {
+ tf <- tempfile()
+ writeLines('
+ { "hello": 3.5, "world": 2, "third_col": 99}
+ { "hello": 3.25, "world": 5, "third_col": 98}
+ { "hello": 3.125, "world": 8, "third_col": 97}
+ { "hello": 0.0, "world": 10, "third_col": 96}
+ ', tf)
+
+ tab1 <- read_json_arrow(
+ tf,
+ schema = schema(
+ hello = float64(),
+ third_col = float64(),
+ world = float64()
+ )
+ )
+
+ expect_identical(
+ tab1,
+ tibble::tibble(
+ hello = c(3.5, 3.25, 3.125, 0),
+ third_col = c(99, 98, 97, 96),
+ world = c(2, 5, 8, 10)
+ )
+ )
+})
+
+test_that("Can read json file with nested columns (ARROW-5503)", {
+ tf <- tempfile()
+ on.exit(unlink(tf))
+ writeLines('
+ { "arr": [1.0, 2.0, 3.0], "nuf": {} }
+ { "arr": [2.0], "nuf": null }
+ { "arr": [], "nuf": { "ps": 78.0, "hello": "hi" } }
+ { "arr": null, "nuf": { "ps": 90.0, "hello": "bonjour" } }
+ { "arr": [5.0], "nuf": { "hello": "ciao" } }
+ { "arr": [5.0, 6.0], "nuf": { "ps": 19 } }
+ ', tf)
+
+ tab1 <- read_json_arrow(tf, as_data_frame = FALSE)
+ tab2 <- read_json_arrow(mmap_open(tf), as_data_frame = FALSE)
+ tab3 <- read_json_arrow(ReadableFile$create(tf), as_data_frame = FALSE)
+
+ expect_equal(tab1, tab2)
+ expect_equal(tab1, tab3)
+
+ expect_equal(
+ tab1$schema,
+ schema(
+ arr = list_of(float64()),
+ nuf = struct(ps = float64(), hello = utf8())
+ )
+ )
+
+ struct_array <- tab1$column(1)$chunk(0)
+ ps <- Array$create(c(NA, NA, 78, 90, NA, 19))
+ hello <- Array$create(c(NA, NA, "hi", "bonjour", "ciao", NA))
+ expect_equal(struct_array$field(0L), ps)
+ expect_equal(struct_array$GetFieldByName("ps"), ps)
+ struct_cols <- struct_array$Flatten()
+ expect_identical(length(struct_cols), 2L)
+ expect_equal(struct_cols[[1]], ps)
+ expect_equal(struct_cols[[2]], hello)
+ expect_equal(
+ as.vector(struct_array),
+ tibble::tibble(ps = ps$as_vector(), hello = hello$as_vector())
+ )
+
+ list_array_r <- list(
+ c(1, 2, 3),
+ c(2),
+ numeric(),
+ NULL,
+ 5,
+ c(5, 6)
+ )
+ list_array <- tab1$column(0)
+ expect_equal(
+ list_array$as_vector(),
+ list_array_r,
+ ignore_attr = TRUE
+ )
+
+ tib <- as.data.frame(tab1)
+ expect_equal(
+ tib,
+ tibble::tibble(
+ arr = list_array_r,
+ nuf = tibble::tibble(ps = ps$as_vector(), hello = hello$as_vector())
+ ),
+ ignore_attr = TRUE
+ )
+})
+
+test_that("Can read json file with list<struct<T...>> nested columns (ARROW-7740)", {
+ tf <- tempfile()
+ on.exit(unlink(tf))
+ writeLines('
+ {"a":[{"b":1.0},{"b":2.0}]}
+ {"a":[{"b":1.0},{"b":2.0}]}
+ ', tf)
+
+ one <- tibble::tibble(b = c(1, 2))
+ expected <- tibble::tibble(a = c(list(one), list(one)))
+ expect_equal(read_json_arrow(tf), expected, ignore_attr = TRUE)
+})