nushell/crates/nu-command/tests/commands/reduce.rs
JT c4e1559f89
Another batch of command tests (#4496)
* Add a batch of command tests

* More tests
2022-02-16 07:38:02 -05:00

125 lines
2.5 KiB
Rust

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