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ARROW-11394: [Rust] Tests for Slice & Concat #9339

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ARROW-11394: [Rust] Tests for Slice & Concat #9339

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3f07ecf
add tests for slices and structs
Jan 27, 2021
bb89b19
attempt at fixing struct concat
Jan 27, 2021
eb82fdb
format
Jan 27, 2021
c22bc4d
construct expected strings directly
Jan 27, 2021
3943a70
format
Jan 27, 2021
97969a0
remove defunct comment
Jan 27, 2021
0b7415d
fix clippy
Jan 28, 2021
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40 changes: 40 additions & 0 deletions rust/arrow/src/array/transform/mod.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -714,6 +714,46 @@ mod tests {
assert_eq!(array, expected)
}

#[test]
fn test_struct_offset() {
let strings: ArrayRef = Arc::new(StringArray::from(vec![
Some("joe"),
None,
None,
Some("mark"),
Some("doe"),
]));
let ints: ArrayRef = Arc::new(Int32Array::from(vec![
Some(1),
Some(2),
Some(3),
Some(4),
Some(5),
]));

let array =
StructArray::try_from(vec![("f1", strings.clone()), ("f2", ints.clone())])
.unwrap()
.slice(1, 3)
.data();
let arrays = vec![array.as_ref()];
let mut mutable = MutableArrayData::new(arrays, false, 0);

mutable.extend(0, 1, 3);
let data = mutable.freeze();
let array = StructArray::from(Arc::new(data));

let expected_strings: ArrayRef =
Arc::new(StringArray::from(vec![None, Some("mark")]));
let expected = StructArray::try_from(vec![
("f1", expected_strings),
("f2", ints.slice(2, 2)),
])
.unwrap();

assert_eq!(array, expected);
}

#[test]
fn test_struct_nulls() {
let strings: ArrayRef = Arc::new(StringArray::from(vec![
Expand Down
13 changes: 8 additions & 5 deletions rust/arrow/src/array/transform/structure.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -26,10 +26,13 @@ pub(super) fn build_extend(array: &ArrayData) -> Extend {
index: usize,
start: usize,
len: usize| {
mutable
.child_data
.iter_mut()
.for_each(|child| child.extend(index, start, start + len))
mutable.child_data.iter_mut().for_each(|child| {
child.extend(
index,
array.offset() + start,
array.offset() + start + len,
)
})
},
)
} else {
Expand All @@ -38,7 +41,7 @@ pub(super) fn build_extend(array: &ArrayData) -> Extend {
index: usize,
start: usize,
len: usize| {
(start..start + len).for_each(|i| {
(array.offset() + start..array.offset() + start + len).for_each(|i| {
if array.is_valid(i) {
mutable
.child_data
Expand Down
136 changes: 136 additions & 0 deletions rust/arrow/src/compute/kernels/concat.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -157,6 +157,40 @@ mod tests {
Ok(())
}

#[test]
fn test_concat_primitive_array_slices() -> Result<()> {
let input_1 = PrimitiveArray::<Int64Type>::from(vec![
Some(-1),
Some(-1),
Some(2),
None,
None,
])
.slice(1, 3);

let input_2 = PrimitiveArray::<Int64Type>::from(vec![
Some(101),
Some(102),
Some(103),
None,
])
.slice(1, 3);
let arr = concat(&[input_1.as_ref(), input_2.as_ref()])?;

let expected_output = Arc::new(PrimitiveArray::<Int64Type>::from(vec![
Some(-1),
Some(2),
None,
Some(102),
Some(103),
None,
])) as ArrayRef;

assert_eq!(&arr, &expected_output);

Ok(())
}

#[test]
fn test_concat_boolean_primitive_arrays() -> Result<()> {
let arr = concat(&[
Expand Down Expand Up @@ -254,4 +288,106 @@ mod tests {

Ok(())
}

#[test]
fn test_concat_struct_arrays() -> Result<()> {
let field = Field::new("field", DataType::Int64, true);
let input_primitive_1: ArrayRef =
Arc::new(PrimitiveArray::<Int64Type>::from(vec![
Some(-1),
Some(-1),
Some(2),
None,
None,
]));
let input_struct_1 = StructArray::from(vec![(field.clone(), input_primitive_1)]);

let input_primitive_2: ArrayRef =
Arc::new(PrimitiveArray::<Int64Type>::from(vec![
Some(101),
Some(102),
Some(103),
None,
]));
let input_struct_2 = StructArray::from(vec![(field.clone(), input_primitive_2)]);

let input_primitive_3: ArrayRef =
Arc::new(PrimitiveArray::<Int64Type>::from(vec![
Some(256),
Some(512),
Some(1024),
]));
let input_struct_3 = StructArray::from(vec![(field, input_primitive_3)]);

let arr = concat(&[&input_struct_1, &input_struct_2, &input_struct_3])?;

let expected_primitive_output = Arc::new(PrimitiveArray::<Int64Type>::from(vec![
Some(-1),
Some(-1),
Some(2),
None,
None,
Some(101),
Some(102),
Some(103),
None,
Some(256),
Some(512),
Some(1024),
])) as ArrayRef;

let actual_primitive = arr
.as_any()
.downcast_ref::<StructArray>()
.unwrap()
.column(0);
assert_eq!(actual_primitive, &expected_primitive_output);

Ok(())
}

#[test]
fn test_concat_struct_array_slices() -> Result<()> {
let field = Field::new("field", DataType::Int64, true);
let input_primitive_1: ArrayRef =
Arc::new(PrimitiveArray::<Int64Type>::from(vec![
Some(-1),
Some(-1),
Some(2),
None,
None,
]));
let input_struct_1 = StructArray::from(vec![(field.clone(), input_primitive_1)]);

let input_primitive_2: ArrayRef =
Arc::new(PrimitiveArray::<Int64Type>::from(vec![
Some(101),
Some(102),
Some(103),
None,
]));
let input_struct_2 = StructArray::from(vec![(field, input_primitive_2)]);

let arr = concat(&[
input_struct_1.slice(1, 3).as_ref(),
input_struct_2.slice(1, 2).as_ref(),
])?;

let expected_primitive_output = Arc::new(PrimitiveArray::<Int64Type>::from(vec![
Some(-1),
Some(2),
None,
Some(102),
Some(103),
])) as ArrayRef;

let actual_primitive = arr
.as_any()
.downcast_ref::<StructArray>()
.unwrap()
.column(0);
assert_eq!(actual_primitive, &expected_primitive_output);

Ok(())
}
}