nushell/crates/nu-command/tests/commands/flatten.rs

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use nu_test_support::fs::Stub::FileWithContentToBeTrimmed;
use nu_test_support::playground::Playground;
use nu_test_support::{nu, pipeline};
#[test]
fn flatten_nested_tables_with_columns() {
let actual = nu!(
cwd: ".", pipeline(
r#"
echo [[origin, people]; [Ecuador, ('Andres' | wrap name)]]
[[origin, people]; [Nu, ('nuno' | wrap name)]]
| flatten --all | flatten --all
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| get name
| str collect ','
"#
));
assert_eq!(actual.out, "Andres,nuno");
}
#[test]
fn flatten_nested_tables_that_have_many_columns() {
let actual = nu!(
cwd: ".", pipeline(
r#"
echo [[origin, people]; [Ecuador, (echo [[name, meal]; ['Andres', 'arepa']])]]
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[[origin, people]; [USA, (echo [[name, meal]; ['Katz', 'nurepa']])]]
| flatten --all | flatten --all
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| get meal
| str collect ','
"#
));
assert_eq!(actual.out, "arepa,nurepa");
}
#[test]
fn flatten_nested_tables() {
let actual = nu!(
cwd: ".", pipeline(
r#"
echo [[Andrés, Nicolás, Robalino]] | flatten | get 1
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"#
));
assert_eq!(actual.out, "Nicolás");
}
#[test]
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fn flatten_row_column_explicitly() {
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Playground::setup("flatten_test_1", |dirs, sandbox| {
sandbox.with_files(vec![FileWithContentToBeTrimmed(
"katz.json",
r#"
[
{
"people": {
"name": "Andres",
"meal": "arepa"
}
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},
{
"people": {
"name": "Katz",
"meal": "nurepa"
}
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}
]
"#,
)]);
let actual = nu!(
cwd: dirs.test(),
"open katz.json | flatten people --all | where name == Andres | length"
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);
assert_eq!(actual.out, "1");
})
}
#[test]
fn flatten_row_columns_having_same_column_names_flats_separately() {
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Playground::setup("flatten_test_2", |dirs, sandbox| {
sandbox.with_files(vec![FileWithContentToBeTrimmed(
"katz.json",
r#"
[
{
"people": {
"name": "Andres",
"meal": "arepa"
},
"city": [{"name": "Guayaquil"}, {"name": "Samborondón"}]
},
{
"people": {
"name": "Katz",
"meal": "nurepa"
},
"city": [{"name": "Oregon"}, {"name": "Brooklin"}]
}
]
"#,
)]);
let actual = nu!(
cwd: dirs.test(),
"open katz.json | flatten --all | flatten people city | get city_name | length"
);
assert_eq!(actual.out, "4");
})
}
#[test]
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fn flatten_table_columns_explicitly() {
Playground::setup("flatten_test_3", |dirs, sandbox| {
sandbox.with_files(vec![FileWithContentToBeTrimmed(
"katz.json",
r#"
[
{
"people": {
"name": "Andres",
"meal": "arepa"
},
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"city": ["Guayaquil", "Samborondón"]
},
{
"people": {
"name": "Katz",
"meal": "nurepa"
},
"city": ["Oregon", "Brooklin"]
}
]
"#,
)]);
let actual = nu!(
cwd: dirs.test(),
"open katz.json | flatten city --all | where people.name == Katz | length"
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);
assert_eq!(actual.out, "2");
})
}
#[test]
fn flatten_more_than_one_column_that_are_subtables_not_supported() {
Playground::setup("flatten_test_4", |dirs, sandbox| {
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sandbox.with_files(vec![FileWithContentToBeTrimmed(
"katz.json",
r#"
[
{
"people": {
"name": "Andres",
"meal": "arepa"
}
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"tags": ["carbohydrate", "corn", "maiz"],
"city": ["Guayaquil", "Samborondón"]
},
{
"people": {
"name": "Katz",
"meal": "nurepa"
},
"tags": ["carbohydrate", "shell food", "amigos flavor"],
"city": ["Oregon", "Brooklin"]
}
]
"#,
)]);
let actual = nu!(
cwd: dirs.test(),
"open katz.json | flatten tags city --all"
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);
assert!(actual.err.contains("tried flattening"));
assert!(actual.err.contains("but is flattened already"));
})
}