nushell/crates/nu-command/tests/commands/seq.rs
Reilly Wood 95d4922e44
Make stream info visible to users in describe (#7589)
Closes #7581.

After this PR, `describe` shows `(stream)` next to input that arrived at
`describe` as a `ListStream`:
```bash
〉ls | describe
table<name: string, type: string, size: filesize, modified: date> (stream)
〉[1 2 3] | each {|i| $i} | describe
list<int> (stream)
```

`describe` must collect all items of the stream to display type
information for lists and tables. If users need to avoid collecting
input, they can use the `-n`/`--no-collect` flag:

```bash
〉[1 2 3] | each {|i| $i} | describe --no-collect
stream
```
2023-01-03 21:08:05 -08:00

25 lines
516 B
Rust

use nu_test_support::{nu, pipeline};
#[test]
fn float_in_seq_leads_to_lists_of_floats() {
let actual = nu!(
cwd: "tests/fixtures/formats", pipeline(
r#"
seq 1.0 0.5 6 | describe
"#
));
assert_eq!(actual.out, "list<float> (stream)");
}
#[test]
fn ints_in_seq_leads_to_lists_of_ints() {
let actual = nu!(
cwd: "tests/fixtures/formats", pipeline(
r#"
seq 1 2 6 | describe
"#
));
assert_eq!(actual.out, "list<int> (stream)");
}