mirror of
https://github.com/nushell/nushell.git
synced 2024-12-27 17:39:15 +01:00
b06f31d3c6
# Description Makes the `from json --objects` command produce a stream, and read lazily from an input stream to produce its output. Also added a helper, `PipelineData::get_type()`, to make it easier to construct a wrong type error message when matching on `PipelineData`. I expect checking `PipelineData` for either a string value or an `Unknown` or `String` typed `ByteStream` will be very, very common. I would have liked to have a helper that just returns a readable stream from either, but that would either be a bespoke enum or a `Box<dyn BufRead>`, which feels like it wouldn't be so great for performance. So instead, taking the approach I did here is probably better - having a function that accepts the `impl BufRead` and matching to use it. # User-Facing Changes - `from json --objects` no longer collects its input, and can be used for large datasets or streams that produce values over time. # Tests + Formatting All passing. # After Submitting - [ ] release notes --------- Co-authored-by: Ian Manske <ian.manske@pm.me>
298 lines
8.0 KiB
Rust
298 lines
8.0 KiB
Rust
use nu_test_support::fs::Stub::FileWithContentToBeTrimmed;
|
|
use nu_test_support::playground::Playground;
|
|
use nu_test_support::{nu, pipeline};
|
|
|
|
#[test]
|
|
fn table_to_json_text_and_from_json_text_back_into_table() {
|
|
let actual = nu!(
|
|
cwd: "tests/fixtures/formats", pipeline(
|
|
r#"
|
|
open sgml_description.json
|
|
| to json
|
|
| from json
|
|
| get glossary.GlossDiv.GlossList.GlossEntry.GlossSee
|
|
"#
|
|
));
|
|
|
|
assert_eq!(actual.out, "markup");
|
|
}
|
|
|
|
#[test]
|
|
fn from_json_text_to_table() {
|
|
Playground::setup("filter_from_json_test_1", |dirs, sandbox| {
|
|
sandbox.with_files(&[FileWithContentToBeTrimmed(
|
|
"katz.txt",
|
|
r#"
|
|
{
|
|
"katz": [
|
|
{"name": "Yehuda", "rusty_luck": 1},
|
|
{"name": "JT", "rusty_luck": 1},
|
|
{"name": "Andres", "rusty_luck": 1},
|
|
{"name":"GorbyPuff", "rusty_luck": 1}
|
|
]
|
|
}
|
|
"#,
|
|
)]);
|
|
|
|
let actual = nu!(
|
|
cwd: dirs.test(),
|
|
"open katz.txt | from json | get katz | get rusty_luck | length "
|
|
);
|
|
|
|
assert_eq!(actual.out, "4");
|
|
})
|
|
}
|
|
|
|
#[test]
|
|
fn from_json_text_to_table_strict() {
|
|
Playground::setup("filter_from_json_test_1_strict", |dirs, sandbox| {
|
|
sandbox.with_files(&[FileWithContentToBeTrimmed(
|
|
"katz.txt",
|
|
r#"
|
|
{
|
|
"katz": [
|
|
{"name": "Yehuda", "rusty_luck": 1},
|
|
{"name": "JT", "rusty_luck": 1},
|
|
{"name": "Andres", "rusty_luck": 1},
|
|
{"name":"GorbyPuff", "rusty_luck": 1}
|
|
]
|
|
}
|
|
"#,
|
|
)]);
|
|
|
|
let actual = nu!(
|
|
cwd: dirs.test(),
|
|
"open katz.txt | from json -s | get katz | get rusty_luck | length "
|
|
);
|
|
|
|
assert_eq!(actual.out, "4");
|
|
})
|
|
}
|
|
|
|
#[test]
|
|
fn from_json_text_recognizing_objects_independently_to_table() {
|
|
Playground::setup("filter_from_json_test_2", |dirs, sandbox| {
|
|
sandbox.with_files(&[FileWithContentToBeTrimmed(
|
|
"katz.txt",
|
|
r#"
|
|
{"name": "Yehuda", "rusty_luck": 1}
|
|
{"name": "JT", "rusty_luck": 1}
|
|
{"name": "Andres", "rusty_luck": 1}
|
|
{"name":"GorbyPuff", "rusty_luck": 3}
|
|
"#,
|
|
)]);
|
|
|
|
let actual = nu!(
|
|
cwd: dirs.test(), pipeline(
|
|
r#"
|
|
open katz.txt
|
|
| from json -o
|
|
| where name == "GorbyPuff"
|
|
| get rusty_luck.0
|
|
"#
|
|
));
|
|
|
|
assert_eq!(actual.out, "3");
|
|
})
|
|
}
|
|
|
|
#[test]
|
|
fn from_json_text_objects_is_stream() {
|
|
Playground::setup("filter_from_json_test_2_is_stream", |dirs, sandbox| {
|
|
sandbox.with_files(&[FileWithContentToBeTrimmed(
|
|
"katz.txt",
|
|
r#"
|
|
{"name": "Yehuda", "rusty_luck": 1}
|
|
{"name": "JT", "rusty_luck": 1}
|
|
{"name": "Andres", "rusty_luck": 1}
|
|
{"name":"GorbyPuff", "rusty_luck": 3}
|
|
"#,
|
|
)]);
|
|
|
|
let actual = nu!(
|
|
cwd: dirs.test(), pipeline(
|
|
r#"
|
|
open katz.txt
|
|
| from json -o
|
|
| describe -n
|
|
"#
|
|
));
|
|
|
|
assert_eq!(actual.out, "stream");
|
|
})
|
|
}
|
|
|
|
#[test]
|
|
fn from_json_text_recognizing_objects_independently_to_table_strict() {
|
|
Playground::setup("filter_from_json_test_2_strict", |dirs, sandbox| {
|
|
sandbox.with_files(&[FileWithContentToBeTrimmed(
|
|
"katz.txt",
|
|
r#"
|
|
{"name": "Yehuda", "rusty_luck": 1}
|
|
{"name": "JT", "rusty_luck": 1}
|
|
{"name": "Andres", "rusty_luck": 1}
|
|
{"name":"GorbyPuff", "rusty_luck": 3}
|
|
"#,
|
|
)]);
|
|
|
|
let actual = nu!(
|
|
cwd: dirs.test(), pipeline(
|
|
r#"
|
|
open katz.txt
|
|
| from json -o -s
|
|
| where name == "GorbyPuff"
|
|
| get rusty_luck.0
|
|
"#
|
|
));
|
|
|
|
assert_eq!(actual.out, "3");
|
|
})
|
|
}
|
|
|
|
#[test]
|
|
fn table_to_json_text() {
|
|
Playground::setup("filter_to_json_test", |dirs, sandbox| {
|
|
sandbox.with_files(&[FileWithContentToBeTrimmed(
|
|
"sample.txt",
|
|
r#"
|
|
JonAndrehudaTZ,3
|
|
GorbyPuff,100
|
|
"#,
|
|
)]);
|
|
|
|
let actual = nu!(
|
|
cwd: dirs.test(), pipeline(
|
|
r#"
|
|
open sample.txt
|
|
| lines
|
|
| split column "," name luck
|
|
| select name
|
|
| to json
|
|
| from json
|
|
| get 0
|
|
| get name
|
|
"#
|
|
));
|
|
|
|
assert_eq!(actual.out, "JonAndrehudaTZ");
|
|
})
|
|
}
|
|
|
|
#[test]
|
|
fn table_to_json_text_strict() {
|
|
Playground::setup("filter_to_json_test_strict", |dirs, sandbox| {
|
|
sandbox.with_files(&[FileWithContentToBeTrimmed(
|
|
"sample.txt",
|
|
r#"
|
|
JonAndrehudaTZ,3
|
|
GorbyPuff,100
|
|
"#,
|
|
)]);
|
|
|
|
let actual = nu!(
|
|
cwd: dirs.test(), pipeline(
|
|
r#"
|
|
open sample.txt
|
|
| lines
|
|
| split column "," name luck
|
|
| select name
|
|
| to json
|
|
| from json -s
|
|
| get 0
|
|
| get name
|
|
"#
|
|
));
|
|
|
|
assert_eq!(actual.out, "JonAndrehudaTZ");
|
|
})
|
|
}
|
|
|
|
#[test]
|
|
fn top_level_values_from_json() {
|
|
for (value, type_name) in [("null", "nothing"), ("true", "bool"), ("false", "bool")] {
|
|
let actual = nu!(r#""{}" | from json | to json"#, value);
|
|
assert_eq!(actual.out, value);
|
|
let actual = nu!(r#""{}" | from json | describe"#, value);
|
|
assert_eq!(actual.out, type_name);
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn top_level_values_from_json_strict() {
|
|
for (value, type_name) in [("null", "nothing"), ("true", "bool"), ("false", "bool")] {
|
|
let actual = nu!(r#""{}" | from json -s | to json"#, value);
|
|
assert_eq!(actual.out, value);
|
|
let actual = nu!(r#""{}" | from json -s | describe"#, value);
|
|
assert_eq!(actual.out, type_name);
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn strict_parsing_fails_on_comment() {
|
|
let actual = nu!(r#"'{ "a": 1, /* comment */ "b": 2 }' | from json -s"#);
|
|
assert!(actual.err.contains("error parsing JSON text"));
|
|
}
|
|
|
|
#[test]
|
|
fn strict_parsing_fails_on_trailing_comma() {
|
|
let actual = nu!(r#"'{ "a": 1, "b": 2, }' | from json -s"#);
|
|
assert!(actual.err.contains("error parsing JSON text"));
|
|
}
|
|
|
|
#[test]
|
|
fn ranges_to_json_as_array() {
|
|
let value = r#"[ 1, 2, 3]"#;
|
|
let actual = nu!(r#"1..3 | to json"#);
|
|
assert_eq!(actual.out, value);
|
|
}
|
|
|
|
#[test]
|
|
fn unbounded_from_in_range_fails() {
|
|
let actual = nu!(r#"1.. | to json"#);
|
|
assert!(actual.err.contains("Cannot create range"));
|
|
}
|
|
|
|
#[test]
|
|
fn inf_in_range_fails() {
|
|
let actual = nu!(r#"inf..5 | to json"#);
|
|
assert!(actual.err.contains("can't convert to countable values"));
|
|
let actual = nu!(r#"5..inf | to json"#);
|
|
assert!(actual
|
|
.err
|
|
.contains("Unbounded ranges are not allowed when converting to this format"));
|
|
let actual = nu!(r#"-inf..inf | to json"#);
|
|
assert!(actual.err.contains("can't convert to countable values"));
|
|
}
|
|
|
|
#[test]
|
|
fn test_indent_flag() {
|
|
let actual = nu!(
|
|
cwd: "tests/fixtures/formats", pipeline(
|
|
r#"
|
|
echo '{ "a": 1, "b": 2, "c": 3 }'
|
|
| from json
|
|
| to json --indent 3
|
|
"#
|
|
));
|
|
|
|
let expected_output = "{ \"a\": 1, \"b\": 2, \"c\": 3}";
|
|
|
|
assert_eq!(actual.out, expected_output);
|
|
}
|
|
|
|
#[test]
|
|
fn test_tabs_indent_flag() {
|
|
let actual = nu!(
|
|
cwd: "tests/fixtures/formats", pipeline(
|
|
r#"
|
|
echo '{ "a": 1, "b": 2, "c": 3 }'
|
|
| from json
|
|
| to json --tabs 2
|
|
"#
|
|
));
|
|
|
|
let expected_output = "{\t\t\"a\": 1,\t\t\"b\": 2,\t\t\"c\": 3}";
|
|
|
|
assert_eq!(actual.out, expected_output);
|
|
}
|