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5# to you under the Apache License, Version 2.0 (the
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8#
9#   http://www.apache.org/licenses/LICENSE-2.0
10#
11# Unless required by applicable law or agreed to in writing,
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14# KIND, either express or implied.  See the License for the
15# specific language governing permissions and limitations
16# under the License.
17
18context("Expressions")
19
20test_that("Can create an expression", {
21  expect_is(build_array_expression(">", Array$create(1:5), 4), "array_expression")
22})
23
24test_that("as.vector(array_expression)", {
25  expect_equal(as.vector(build_array_expression(">", Array$create(1:5), 4)), c(FALSE, FALSE, FALSE, FALSE, TRUE))
26})
27
28test_that("array_expression print method", {
29  expect_output(
30    print(build_array_expression(">", Array$create(1:5), 4)),
31    # Not ideal but it is informative
32    "greater(<Array>, 4)",
33    fixed = TRUE
34  )
35})
36
37test_that("C++ expressions", {
38  f <- Expression$field_ref("f")
39  g <- Expression$field_ref("g")
40  date <- Expression$scalar(as.Date("2020-01-15"))
41  ts <- Expression$scalar(as.POSIXct("2020-01-17 11:11:11"))
42  i64 <- Expression$scalar(bit64::as.integer64(42))
43  time <- Expression$scalar(hms::hms(56, 34, 12))
44
45  expect_is(f == g, "Expression")
46  expect_is(f == 4, "Expression")
47  expect_is(f == "", "Expression")
48  expect_is(f == NULL, "Expression")
49  expect_is(f == date, "Expression")
50  expect_is(f == i64, "Expression")
51  expect_is(f == time, "Expression")
52  # can't seem to make this work right now because of R Ops.method dispatch
53  # expect_is(f == as.Date("2020-01-15"), "Expression")
54  expect_is(f == ts, "Expression")
55  expect_is(f <= 2L, "Expression")
56  expect_is(f != FALSE, "Expression")
57  expect_is(f > 4, "Expression")
58  expect_is(f < 4 & f > 2, "Expression")
59  expect_is(f < 4 | f > 2, "Expression")
60  expect_is(!(f < 4), "Expression")
61  expect_output(
62    print(f > 4),
63    'Expression\n(f > 4)',
64    fixed = TRUE
65  )
66  # Interprets that as a list type
67  expect_is(f == c(1L, 2L), "Expression")
68})
69
70test_that("Can create an expression", {
71  a <- Array$create(as.numeric(1:5))
72  expr <- array_expression("cast", a, options = list(to_type = int32()))
73  expect_is(expr, "array_expression")
74  expect_equal(eval_array_expression(expr), Array$create(1:5))
75
76  b <- Array$create(0.5:4.5)
77  bad_expr <- array_expression("cast", b, options = list(to_type = int32()))
78  expect_is(bad_expr, "array_expression")
79  expect_error(
80    eval_array_expression(bad_expr),
81    "Invalid: Float value .* was truncated converting"
82  )
83  expr <- array_expression("cast", b, options = list(to_type = int32(), allow_float_truncate = TRUE))
84  expect_is(expr, "array_expression")
85  expect_equal(eval_array_expression(expr), Array$create(0:4))
86})
87