nushell/crates/nu-command/tests/commands/upsert.rs
JT eaec480f42
Improve empty pipelines (#7383)
# Description

This fix changes pipelines to allow them to actually be empty. Mapping
over empty pipelines gives empty pipelines. Empty pipelines immediately
return `None` when iterated.

This removes a some of where `Span::new(0, 0)` was coming from, though
there are other cases where we still use it.

# User-Facing Changes

None

# Tests + Formatting

Don't forget to add tests that cover your changes.

Make sure you've run and fixed any issues with these commands:

- `cargo fmt --all -- --check` to check standard code formatting (`cargo
fmt --all` applies these changes)
- `cargo clippy --workspace -- -D warnings -D clippy::unwrap_used -A
clippy::needless_collect` to check that you're using the standard code
style
- `cargo test --workspace` to check that all tests pass

# After Submitting

If your PR had any user-facing changes, update [the
documentation](https://github.com/nushell/nushell.github.io) after the
PR is merged, if necessary. This will help us keep the docs up to date.
2022-12-08 07:31:57 +13:00

110 lines
2.5 KiB
Rust

use nu_test_support::{nu, pipeline};
#[test]
fn sets_the_column() {
let actual = nu!(
cwd: "tests/fixtures/formats", pipeline(
r#"
open cargo_sample.toml
| upsert dev-dependencies.pretty_assertions "0.7.0"
| get dev-dependencies.pretty_assertions
"#
));
assert_eq!(actual.out, "0.7.0");
}
#[test]
fn doesnt_convert_record_to_table() {
let actual = nu!(
cwd: ".", r#"{a:1} | upsert a 2 | to nuon"#
);
assert_eq!(actual.out, "{a: 2}");
}
#[cfg(features = "inc")]
#[test]
fn sets_the_column_from_a_block_run_output() {
let actual = nu!(
cwd: "tests/fixtures/formats", pipeline(
r#"
open cargo_sample.toml
| upsert dev-dependencies.pretty_assertions { open cargo_sample.toml | get dev-dependencies.pretty_assertions | inc --minor }
| get dev-dependencies.pretty_assertions
"#
));
assert_eq!(actual.out, "0.7.0");
}
#[test]
fn sets_the_column_from_a_block_full_stream_output() {
let actual = nu!(
cwd: "tests/fixtures/formats", pipeline(
r#"
{content: null}
| upsert content { open --raw cargo_sample.toml | lines | first 5 }
| get content.1
| str contains "nu"
"#
));
assert_eq!(actual.out, "true");
}
#[test]
fn sets_the_column_from_a_subexpression() {
let actual = nu!(
cwd: "tests/fixtures/formats", pipeline(
r#"
{content: null}
| upsert content (open --raw cargo_sample.toml | lines | first 5)
| get content.1
| str contains "nu"
"#
));
assert_eq!(actual.out, "true");
}
#[test]
fn uses_optional_index_argument_inserting() {
let actual = nu!(
cwd: ".", pipeline(
r#"[[a]; [7] [6]] | upsert b {|el ind| $ind + 1 + $el.a } | to nuon"#
));
assert_eq!(actual.out, "[[a, b]; [7, 8], [6, 8]]");
}
#[test]
fn uses_optional_index_argument_updating() {
let actual = nu!(
cwd: ".", pipeline(
r#"[[a]; [7] [6]] | upsert a {|el ind| $ind + 1 + $el.a } | to nuon"#
));
assert_eq!(actual.out, "[[a]; [8], [8]]");
}
#[test]
fn index_does_not_exist() {
let actual = nu!(
cwd: ".", pipeline(
r#"[1,2,3] | upsert 4 4"#
));
assert!(actual.err.contains("index too large (max: 3)"));
}
#[test]
fn upsert_empty() {
let actual = nu!(
cwd: ".", pipeline(
r#"[] | upsert 1 1"#
));
assert!(actual.err.contains("index too large (max: 0)"));
}