nushell/crates/nu-command/tests/format_conversions/csv.rs
Matthew Deville 8543b0789d
Additional flags for commands from csv and from tsv (#8398)
# Description

Resolves issue #8370

Adds the following flags to commands `from csv` and `from tsv`:
- `--flexible`: allow the number of fields in records to be variable
- `-c --comment`: a comment character to ignore lines starting with it
- `-q --quote`: a quote character to ignore separators in strings,
defaults to '\"'
- `-e --escape`: an escape character for strings containing the quote
character

Internally, the `Value` struct has an additional helper function
`as_char` which converts it to a single `char`

# User-Facing Changes

The single quoted string `'\t'` can no longer be used as a parameter for
the flag `--separator '\t'` as it is interpreted as a two-character
string. One needs to use from now on the flag with a double quoted
string like so: `-s "\t"` which correctly interprets the string as a
single `char`.
2023-03-16 17:49:46 -05:00

410 lines
11 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_csv_text_and_from_csv_text_back_into_table() {
let actual = nu!(
cwd: "tests/fixtures/formats",
"open caco3_plastics.csv | to csv | from csv | first | get origin "
);
assert_eq!(actual.out, "SPAIN");
}
#[test]
fn table_to_csv_text() {
Playground::setup("filter_to_csv_test_1", |dirs, sandbox| {
sandbox.with_files(vec![FileWithContentToBeTrimmed(
"csv_text_sample.txt",
r#"
importer,shipper,tariff_item,name,origin
Plasticos Rival,Reverte,2509000000,Calcium carbonate,Spain
Tigre Ecuador,OMYA Andina,3824909999,Calcium carbonate,Colombia
"#,
)]);
let actual = nu!(
cwd: dirs.test(), pipeline(
r#"
open csv_text_sample.txt
| lines
| str trim
| split column "," a b c d origin
| last 1
| to csv
| lines
| get 1
"#
));
assert!(actual
.out
.contains("Tigre Ecuador,OMYA Andina,3824909999,Calcium carbonate,Colombia"));
})
}
#[test]
fn table_to_csv_text_skipping_headers_after_conversion() {
Playground::setup("filter_to_csv_test_2", |dirs, sandbox| {
sandbox.with_files(vec![FileWithContentToBeTrimmed(
"csv_text_sample.txt",
r#"
importer,shipper,tariff_item,name,origin
Plasticos Rival,Reverte,2509000000,Calcium carbonate,Spain
Tigre Ecuador,OMYA Andina,3824909999,Calcium carbonate,Colombia
"#,
)]);
let actual = nu!(
cwd: dirs.test(), pipeline(
r#"
open csv_text_sample.txt
| lines
| str trim
| split column "," a b c d origin
| last 1
| to csv --noheaders
"#
));
assert!(actual
.out
.contains("Tigre Ecuador,OMYA Andina,3824909999,Calcium carbonate,Colombia"));
})
}
#[test]
fn infers_types() {
Playground::setup("filter_from_csv_test_1", |dirs, sandbox| {
sandbox.with_files(vec![FileWithContentToBeTrimmed(
"los_cuatro_mosqueteros.csv",
r#"
first_name,last_name,rusty_luck,d
Andrés,Robalino,1,d
JT,Turner,1,d
Yehuda,Katz,1,d
Jason,Gedge,1,d
"#,
)]);
let actual = nu!(
cwd: dirs.test(), pipeline(
r#"
open los_cuatro_mosqueteros.csv
| where rusty_luck > 0
| length
"#
));
assert_eq!(actual.out, "4");
})
}
#[test]
fn from_csv_text_to_table() {
Playground::setup("filter_from_csv_test_2", |dirs, sandbox| {
sandbox.with_files(vec![FileWithContentToBeTrimmed(
"los_tres_caballeros.txt",
r#"
first_name,last_name,rusty_luck
Andrés,Robalino,1
JT,Turner,1
Yehuda,Katz,1
"#,
)]);
let actual = nu!(
cwd: dirs.test(), pipeline(
r#"
open los_tres_caballeros.txt
| from csv
| get rusty_luck
| length
"#
));
assert_eq!(actual.out, "3");
})
}
#[test]
fn from_csv_text_with_separator_to_table() {
Playground::setup("filter_from_csv_test_3", |dirs, sandbox| {
sandbox.with_files(vec![FileWithContentToBeTrimmed(
"los_tres_caballeros.txt",
r#"
first_name;last_name;rusty_luck
Andrés;Robalino;1
JT;Turner;1
Yehuda;Katz;1
"#,
)]);
let actual = nu!(
cwd: dirs.test(), pipeline(
r#"
open los_tres_caballeros.txt
| from csv --separator ";"
| get rusty_luck
| length
"#
));
assert_eq!(actual.out, "3");
})
}
#[test]
fn from_csv_text_with_tab_separator_to_table() {
Playground::setup("filter_from_csv_test_4", |dirs, sandbox| {
sandbox.with_files(vec![FileWithContentToBeTrimmed(
"los_tres_caballeros.txt",
r#"
first_name last_name rusty_luck
Andrés Robalino 1
JT Turner 1
Yehuda Katz 1
"#,
)]);
let actual = nu!(
cwd: dirs.test(), pipeline(
r#"
open los_tres_caballeros.txt
| from csv --separator (char tab)
| get rusty_luck
| length
"#
));
assert_eq!(actual.out, "3");
})
}
#[test]
fn from_csv_text_with_comments_to_table() {
Playground::setup("filter_from_csv_test_5", |dirs, sandbox| {
sandbox.with_files(vec![FileWithContentToBeTrimmed(
"los_tres_caballeros.txt",
r#"
# This is a comment
first_name,last_name,rusty_luck
# This one too
Andrés,Robalino,1
Jonathan,Turner,1
Yehuda,Katz,1
# This one also
"#,
)]);
let actual = nu!(
cwd: dirs.test(), pipeline(
r##"
open los_tres_caballeros.txt
| from csv --comment "#"
| get rusty_luck
| length
"##
));
assert_eq!(actual.out, "3");
})
}
#[test]
fn from_csv_text_with_custom_quotes_to_table() {
Playground::setup("filter_from_csv_test_6", |dirs, sandbox| {
sandbox.with_files(vec![FileWithContentToBeTrimmed(
"los_tres_caballeros.txt",
r#"
first_name,last_name,rusty_luck
'And''rés',Robalino,1
Jonathan,Turner,1
Yehuda,Katz,1
"#,
)]);
let actual = nu!(
cwd: dirs.test(), pipeline(
r#"
open los_tres_caballeros.txt
| from csv --quote "'"
| first
| get first_name
"#
));
assert_eq!(actual.out, "And'rés");
})
}
#[test]
fn from_csv_text_with_custom_escapes_to_table() {
Playground::setup("filter_from_csv_test_7", |dirs, sandbox| {
sandbox.with_files(vec![FileWithContentToBeTrimmed(
"los_tres_caballeros.txt",
r#"
first_name,last_name,rusty_luck
"And\"rés",Robalino,1
Jonathan,Turner,1
Yehuda,Katz,1
"#,
)]);
let actual = nu!(
cwd: dirs.test(), pipeline(
r#"
open los_tres_caballeros.txt
| from csv --escape '\'
| first
| get first_name
"#
));
assert_eq!(actual.out, "And\"rés");
})
}
#[test]
fn from_csv_text_skipping_headers_to_table() {
Playground::setup("filter_from_csv_test_8", |dirs, sandbox| {
sandbox.with_files(vec![FileWithContentToBeTrimmed(
"los_tres_amigos.txt",
r#"
Andrés,Robalino,1
JT,Turner,1
Yehuda,Katz,1
"#,
)]);
let actual = nu!(
cwd: dirs.test(), pipeline(
r#"
open los_tres_amigos.txt
| from csv --noheaders
| get column3
| length
"#
));
assert_eq!(actual.out, "3");
})
}
#[test]
fn from_csv_text_with_missing_columns_to_table() {
Playground::setup("filter_from_csv_test_9", |dirs, sandbox| {
sandbox.with_files(vec![FileWithContentToBeTrimmed(
"los_tres_caballeros.txt",
r#"
first_name,last_name,rusty_luck
Andrés,Robalino
Jonathan,Turner,1
Yehuda,Katz,1
"#,
)]);
let actual = nu!(
cwd: dirs.test(), pipeline(
r#"
open los_tres_caballeros.txt
| from csv --flexible
| get -i rusty_luck
| compact
| length
"#
));
assert_eq!(actual.out, "2");
})
}
#[test]
fn from_csv_text_with_multiple_char_separator() {
Playground::setup("filter_from_csv_test_10", |dirs, sandbox| {
sandbox.with_files(vec![FileWithContentToBeTrimmed(
"los_tres_caballeros.txt",
r#"
first_name,last_name,rusty_luck
Andrés,Robalino,1
Jonathan,Turner,1
Yehuda,Katz,1
"#,
)]);
let actual = nu!(
cwd: dirs.test(), pipeline(
r#"
open los_tres_caballeros.txt
| from csv --separator "li"
"#
));
assert!(actual.err.contains("single character separator"));
})
}
#[test]
fn from_csv_text_with_wrong_type_separator() {
Playground::setup("filter_from_csv_test_11", |dirs, sandbox| {
sandbox.with_files(vec![FileWithContentToBeTrimmed(
"los_tres_caballeros.txt",
r#"
first_name,last_name,rusty_luck
Andrés,Robalino,1
Jonathan,Turner,1
Yehuda,Katz,1
"#,
)]);
let actual = nu!(
cwd: dirs.test(), pipeline(
r#"
open los_tres_caballeros.txt
| from csv --separator ('123' | into int)
"#
));
assert!(actual.err.contains("can't convert int to char"));
})
}
#[test]
fn table_with_record_error() {
let actual = nu!(
cwd: "tests/fixtures/formats", pipeline(
r#"
[[a b]; [1 2] [3 {a: 1 b: 2}]]
| to csv
"#
));
assert!(actual.err.contains("can't convert"))
}
#[test]
fn list_not_table_error() {
let actual = nu!(
cwd: "tests/fixtures/formats", pipeline(
r#"
[{a: 1 b: 2} {a: 3 b: 4} 1]
| to csv
"#
));
assert!(actual.err.contains("can't convert"))
}
#[test]
fn string_to_csv_error() {
let actual = nu!(
cwd: "tests/fixtures/formats", pipeline(
r#"
'qwe' | to csv
"#
));
assert!(actual.err.contains("can't convert"))
}