forked from extern/nushell
126 lines
2.5 KiB
Rust
126 lines
2.5 KiB
Rust
use nu_test_support::{nu, pipeline};
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#[test]
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fn reduce_table_column() {
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let actual = nu!(
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cwd: ".", pipeline(
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r#"
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echo "[{month:2,total:30}, {month:3,total:10}, {month:4,total:3}, {month:5,total:60}]"
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| from json
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| get total
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| reduce -f 20 { $it + (math eval $"($acc)^1.05")}
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| str from -d 1
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"#
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)
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);
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assert_eq!(actual.out, "180.6");
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}
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#[test]
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fn reduce_table_column_with_path() {
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let actual = nu!(
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cwd: ".", pipeline(
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r#"
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echo "[{month:2,total:30}, {month:3,total:10}, {month:4,total:3}, {month:5,total:60}]"
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| from json
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| reduce -f 20 { $it.total + (math eval $"($acc)^1.05")}
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| str from -d 1
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"#
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)
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);
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assert_eq!(actual.out, "180.6");
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}
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#[test]
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fn reduce_rows_example() {
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let actual = nu!(
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cwd: ".", pipeline(
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r#"
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echo a,b 1,2 3,4
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| split column ,
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| headers
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| reduce -f 1.6 { $acc * ($it.a | str to-int) + ($it.b | str to-int) }
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"#
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)
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);
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assert_eq!(actual.out, "14.8");
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}
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#[test]
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fn reduce_numbered_example() {
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let actual = nu!(
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cwd: ".", pipeline(
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r#"
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echo one longest three bar
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| reduce -n { if ($it.item | str length) > ($acc.item | str length) {echo $it} {echo $acc}}
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| get index
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"#
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)
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);
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assert_eq!(actual.out, "1");
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}
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#[test]
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fn reduce_numbered_integer_addition_example() {
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let actual = nu!(
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cwd: ".", pipeline(
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r#"
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echo [1 2 3 4]
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| reduce -n { $acc.item + $it.item }
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| get item
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"#
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)
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);
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assert_eq!(actual.out, "10");
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}
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#[test]
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fn folding_with_tables() {
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let actual = nu!(
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cwd: ".", pipeline(
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r#"
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echo [10 20 30 40]
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| reduce -f [] {
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with-env [value $it] {
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echo $acc | append (10 * ($nu.env.value | str to-int))
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}
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}
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| math sum
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"#
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)
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);
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assert_eq!(actual.out, "1000");
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}
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#[test]
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fn error_reduce_fold_type_mismatch() {
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let actual = nu!(
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cwd: ".", pipeline(
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r#"
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echo a b c | reduce -f 0 { $acc + $it }
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"#
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)
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);
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assert!(actual.err.contains("Coercion"));
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}
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#[test]
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fn error_reduce_empty() {
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let actual = nu!(
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cwd: ".", pipeline(
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r#"
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reduce { $acc + $it }
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"#
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)
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);
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assert!(actual.err.contains("needs input"));
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}
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