mgill25 commented on a change in pull request #273:
URL: https://github.com/apache/arrow-rs/pull/273#discussion_r630614945
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File path: arrow/src/util/display.rs
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@@ -296,3 +297,48 @@ fn dict_array_value_to_string<K: ArrowPrimitiveType>(
array_value_to_string(&dict_array.values(), dict_index)
}
+
+#[cfg(test)]
+mod tests {
+ use super::*;
+ use crate::{
+ array::ArrayRef,
+ array::{ArrayData, DecimalArray, Int32Array},
+ };
+ use crate::{buffer::Buffer, datatypes::DataType};
+ use std::sync::Arc;
+
+ #[test]
+ fn test_int_display() -> Result<()> {
+ let array = Arc::new(Int32Array::from(vec![6, 3])) as ArrayRef;
+ let actual_one = array_value_to_string(&array, 0).unwrap();
+ let expected_one = String::from("6");
+
+ let actual_two = array_value_to_string(&array, 1).unwrap();
+ let expected_two = String::from("3");
+ assert_eq!(actual_one, expected_one);
+ assert_eq!(actual_two, expected_two);
+ Ok(())
+ }
+
+ #[test]
+ fn test_decimal_display() -> Result<()> {
+ let values: [u8; 32] = [
Review comment:
Thanks a lot for your guidance. I was wondering exactly this - how to
use `DecimalBuilder` and how to think in terms of real numbers instead of bytes
during creation of test data. 😅
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