mirror of
https://github.com/nushell/nushell
synced 2024-12-26 21:13:19 +00:00
57af9b5040
This commit contains two improvements: - Support for a Range syntax (and a corresponding Range value) - Work towards a signature syntax Implementing the Range syntax resulted in cleaning up how operators in the core syntax works. There are now two kinds of infix operators - tight operators (`.` and `..`) - loose operators Tight operators may not be interspersed (`$it.left..$it.right` is a syntax error). Loose operators require whitespace on both sides of the operator, and can be arbitrarily interspersed. Precedence is left to right in the core syntax. Note that delimited syntax (like `( ... )` or `[ ... ]`) is a single token node in the core syntax. A single token node can be parsed from beginning to end in a context-free manner. The rule for `.` is `<token node>.<member>`. The rule for `..` is `<token node>..<token node>`. Loose operators all have the same syntactic rule: `<token node><space><loose op><space><token node>`. The second aspect of this pull request is the beginning of support for a signature syntax. Before implementing signatures, a necessary prerequisite is for the core syntax to support multi-line programs. That work establishes a few things: - `;` and newlines are handled in the core grammar, and both count as "separators" - line comments begin with `#` and continue until the end of the line In this commit, multi-token productions in the core grammar can use separators interchangably with spaces. However, I think we will ultimately want a different rule preventing separators from occurring before an infix operator, so that the end of a line is always unambiguous. This would avoid gratuitous differences between modules and repl usage. We already effectively have this rule, because otherwise `x<newline> | y` would be a single pipeline, but of course that wouldn't work.
564 lines
14 KiB
Rust
564 lines
14 KiB
Rust
mod helpers;
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use helpers as h;
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use helpers::{Playground, Stub::*};
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#[test]
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fn nth_selects_a_row() {
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Playground::setup("nth_test_1", |dirs, sandbox| {
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sandbox.with_files(vec![EmptyFile("notes.txt"), EmptyFile("arepas.txt")]);
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let actual = nu!(
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cwd: dirs.test(), h::pipeline(
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r#"
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ls
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| sort-by name
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| nth 0
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| get name
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| echo $it
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"#
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));
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assert_eq!(actual, "arepas.txt");
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});
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}
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#[test]
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fn nth_selects_many_rows() {
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Playground::setup("nth_test_2", |dirs, sandbox| {
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sandbox.with_files(vec![EmptyFile("notes.txt"), EmptyFile("arepas.txt")]);
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let actual = nu!(
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cwd: dirs.test(), h::pipeline(
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r#"
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ls
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| get name
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| nth 1 0
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| count
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| echo $it
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"#
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));
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assert_eq!(actual, "2");
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});
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}
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#[test]
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fn default_row_data_if_column_missing() {
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Playground::setup("default_test_1", |dirs, sandbox| {
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sandbox.with_files(vec![FileWithContentToBeTrimmed(
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"los_tres_amigos.json",
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r#"
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{
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"amigos": [
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{"name": "Yehuda"},
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{"name": "Jonathan", "rusty_luck": 0},
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{"name": "Andres", "rusty_luck": 0},
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{"name":"GorbyPuff"}
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]
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}
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"#,
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)]);
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let actual = nu!(
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cwd: dirs.test(), h::pipeline(
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r#"
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open los_tres_amigos.json
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| get amigos
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| default rusty_luck 1
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| where rusty_luck == 1
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| count
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| echo $it
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"#
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));
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assert_eq!(actual, "2");
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});
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}
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#[test]
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fn compact_rows_where_given_column_is_empty() {
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Playground::setup("compact_test_1", |dirs, sandbox| {
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sandbox.with_files(vec![FileWithContentToBeTrimmed(
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"los_tres_amigos.json",
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r#"
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{
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"amigos": [
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{"name": "Yehuda", "rusty_luck": 1},
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{"name": "Jonathan", "rusty_luck": 1},
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{"name": "Andres", "rusty_luck": 1},
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{"name":"GorbyPuff"}
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]
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}
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"#,
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)]);
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let actual = nu!(
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cwd: dirs.test(), h::pipeline(
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r#"
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open los_tres_amigos.json
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| get amigos
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| compact rusty_luck
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| count
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| echo $it
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"#
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));
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assert_eq!(actual, "3");
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});
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}
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#[test]
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fn compact_empty_rows_by_default() {
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Playground::setup("compact_test_2", |dirs, _| {
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let actual = nu!(
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cwd: dirs.test(), h::pipeline(
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r#"
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echo "[1,2,3,14,null]"
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| from-json
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| compact
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| count
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| echo $it
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"#
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));
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assert_eq!(actual, "4");
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});
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}
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#[test]
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fn group_by() {
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Playground::setup("group_by_test_1", |dirs, sandbox| {
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sandbox.with_files(vec![FileWithContentToBeTrimmed(
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"los_tres_caballeros.csv",
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r#"
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first_name,last_name,rusty_at,type
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Andrés,Robalino,10/11/2013,A
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Jonathan,Turner,10/12/2013,B
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Yehuda,Katz,10/11/2013,A
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"#,
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)]);
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let actual = nu!(
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cwd: dirs.test(), h::pipeline(
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r#"
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open los_tres_caballeros.csv
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| group-by rusty_at
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| get "10/11/2013"
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| count
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| echo $it
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"#
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));
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assert_eq!(actual, "2");
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})
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}
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#[test]
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fn histogram() {
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Playground::setup("histogram_test_1", |dirs, sandbox| {
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sandbox.with_files(vec![FileWithContentToBeTrimmed(
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"los_tres_caballeros.csv",
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r#"
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first_name,last_name,rusty_at
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Andrés,Robalino,Ecuador
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Jonathan,Turner,Estados Unidos
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Yehuda,Katz,Estados Unidos
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"#,
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)]);
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let actual = nu!(
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cwd: dirs.test(), h::pipeline(
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r#"
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open los_tres_caballeros.csv
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| histogram rusty_at countries
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| where rusty_at == "Ecuador"
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| get countries
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| echo $it
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"#
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));
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assert_eq!(actual, "**************************************************");
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// 50%
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})
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}
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#[test]
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fn group_by_errors_if_unknown_column_name() {
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Playground::setup("group_by_test_2", |dirs, sandbox| {
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sandbox.with_files(vec![FileWithContentToBeTrimmed(
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"los_tres_caballeros.csv",
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r#"
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first_name,last_name,rusty_at,type
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Andrés,Robalino,10/11/2013,A
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Jonathan,Turner,10/12/2013,B
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Yehuda,Katz,10/11/2013,A
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"#,
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)]);
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let actual = nu_error!(
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cwd: dirs.test(), h::pipeline(
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r#"
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open los_tres_caballeros.csv
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| group-by ttype
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"#
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));
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assert!(actual.contains("Unknown column"));
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})
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}
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#[test]
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fn range_selects_a_row() {
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Playground::setup("range_test_1", |dirs, sandbox| {
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sandbox.with_files(vec![EmptyFile("notes.txt"), EmptyFile("tests.txt")]);
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let actual = nu!(
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cwd: dirs.test(), h::pipeline(
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r#"
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ls
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| sort-by name
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| range 0..0
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| get name
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| echo $it
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"#
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));
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assert_eq!(actual, "notes.txt");
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});
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}
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#[test]
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fn range_selects_some_rows() {
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Playground::setup("range_test_2", |dirs, sandbox| {
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sandbox.with_files(vec![
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EmptyFile("notes.txt"),
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EmptyFile("tests.txt"),
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EmptyFile("persons.txt"),
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]);
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let actual = nu!(
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cwd: dirs.test(), h::pipeline(
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r#"
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ls
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| get name
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| range 1..2
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| count
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| echo $it
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"#
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));
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assert_eq!(actual, "2");
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});
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}
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#[test]
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fn split_by() {
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Playground::setup("split_by_test_1", |dirs, sandbox| {
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sandbox.with_files(vec![FileWithContentToBeTrimmed(
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"los_tres_caballeros.csv",
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r#"
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first_name,last_name,rusty_at,type
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Andrés,Robalino,10/11/2013,A
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Jonathan,Turner,10/12/2013,B
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Yehuda,Katz,10/11/2013,A
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"#,
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)]);
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let actual = nu!(
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cwd: dirs.test(), h::pipeline(
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r#"
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open los_tres_caballeros.csv
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| group-by rusty_at
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| split-by type
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| get A."10/11/2013"
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| count
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| echo $it
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"#
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));
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assert_eq!(actual, "2");
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})
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}
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#[test]
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fn split_by_errors_if_no_table_given_as_input() {
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Playground::setup("split_by_test_2", |dirs, sandbox| {
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sandbox.with_files(vec![
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EmptyFile("los.txt"),
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EmptyFile("tres.txt"),
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EmptyFile("amigos.txt"),
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EmptyFile("arepas.clu"),
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]);
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let actual = nu_error!(
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cwd: dirs.test(), h::pipeline(
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r#"
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ls
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| get name
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| split-by type
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"#
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));
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assert!(actual.contains("Expected table from pipeline"));
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})
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}
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#[test]
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fn first_gets_first_rows_by_amount() {
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Playground::setup("first_test_1", |dirs, sandbox| {
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sandbox.with_files(vec![
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EmptyFile("los.txt"),
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EmptyFile("tres.txt"),
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EmptyFile("amigos.txt"),
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EmptyFile("arepas.clu"),
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]);
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let actual = nu!(
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cwd: dirs.test(), h::pipeline(
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r#"
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ls
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| first 3
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| count
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| echo $it
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"#
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));
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assert_eq!(actual, "3");
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})
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}
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#[test]
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fn first_gets_all_rows_if_amount_higher_than_all_rows() {
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Playground::setup("first_test_2", |dirs, sandbox| {
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sandbox.with_files(vec![
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EmptyFile("los.txt"),
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EmptyFile("tres.txt"),
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EmptyFile("amigos.txt"),
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EmptyFile("arepas.clu"),
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]);
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let actual = nu!(
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cwd: dirs.test(), h::pipeline(
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r#"
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ls
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| first 99
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| count
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| echo $it
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"#
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));
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assert_eq!(actual, "4");
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})
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}
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#[test]
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fn first_gets_first_row_when_no_amount_given() {
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Playground::setup("first_test_3", |dirs, sandbox| {
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sandbox.with_files(vec![EmptyFile("caballeros.txt"), EmptyFile("arepas.clu")]);
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let actual = nu!(
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cwd: dirs.test(), h::pipeline(
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r#"
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ls
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| first
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| count
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| echo $it
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"#
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));
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assert_eq!(actual, "1");
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})
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}
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#[test]
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fn last_gets_last_rows_by_amount() {
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Playground::setup("last_test_1", |dirs, sandbox| {
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sandbox.with_files(vec![
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EmptyFile("los.txt"),
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EmptyFile("tres.txt"),
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EmptyFile("amigos.txt"),
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EmptyFile("arepas.clu"),
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]);
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let actual = nu!(
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cwd: dirs.test(), h::pipeline(
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r#"
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ls
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| last 3
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| count
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| echo $it
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"#
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));
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assert_eq!(actual, "3");
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})
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}
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#[test]
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fn last_gets_last_row_when_no_amount_given() {
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Playground::setup("last_test_2", |dirs, sandbox| {
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sandbox.with_files(vec![EmptyFile("caballeros.txt"), EmptyFile("arepas.clu")]);
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let actual = nu!(
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cwd: dirs.test(), h::pipeline(
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r#"
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ls
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| last
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| count
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| echo $it
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"#
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));
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assert_eq!(actual, "1");
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})
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}
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#[test]
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fn get() {
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Playground::setup("get_test_1", |dirs, sandbox| {
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sandbox.with_files(vec![FileWithContent(
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"sample.toml",
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r#"
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nu_party_venue = "zion"
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"#,
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)]);
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let actual = nu!(
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cwd: dirs.test(), h::pipeline(
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r#"
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open sample.toml
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| get nu_party_venue
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| echo $it
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"#
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));
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assert_eq!(actual, "zion");
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})
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}
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#[test]
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fn get_more_than_one_member() {
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Playground::setup("get_test_2", |dirs, sandbox| {
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sandbox.with_files(vec![FileWithContent(
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"sample.toml",
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r#"
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[[fortune_tellers]]
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name = "Andrés N. Robalino"
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arepas = 1
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broken_builds = 0
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[[fortune_tellers]]
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name = "Jonathan Turner"
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arepas = 1
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broken_builds = 1
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[[fortune_tellers]]
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name = "Yehuda Katz"
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arepas = 1
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broken_builds = 1
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"#,
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)]);
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let actual = nu!(
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cwd: dirs.test(), h::pipeline(
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r#"
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open sample.toml
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| get fortune_tellers
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| get arepas broken_builds
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| where $it == 1
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| count
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| echo $it
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"#
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));
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assert_eq!(actual, "5");
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})
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}
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#[test]
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fn lines() {
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let actual = nu!(
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cwd: "tests/fixtures/formats", h::pipeline(
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r#"
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open cargo_sample.toml --raw
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| lines
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| skip-while $it != "[dependencies]"
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| skip 1
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| first 1
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| split-column "="
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| get Column1
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| trim
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| echo $it
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"#
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));
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assert_eq!(actual, "rustyline");
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}
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#[test]
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fn save_figures_out_intelligently_where_to_write_out_with_metadata() {
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Playground::setup("save_test_1", |dirs, sandbox| {
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sandbox.with_files(vec![FileWithContent(
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"cargo_sample.toml",
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r#"
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[package]
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name = "nu"
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version = "0.1.1"
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authors = ["Yehuda Katz <wycats@gmail.com>"]
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description = "A shell for the GitHub era"
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license = "ISC"
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edition = "2018"
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"#,
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)]);
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let subject_file = dirs.test().join("cargo_sample.toml");
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nu!(
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cwd: dirs.root(),
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"open save_test_1/cargo_sample.toml | save"
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);
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let actual = h::file_contents(&subject_file);
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assert!(actual.contains("0.1.1"));
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})
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}
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#[test]
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fn it_arg_works_with_many_inputs_to_external_command() {
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Playground::setup("it_arg_works_with_many_inputs", |dirs, sandbox| {
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sandbox.with_files(vec![
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FileWithContent("file1", "text"),
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FileWithContent("file2", " and more text"),
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]);
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let (stdout, stderr) = nu_combined!(
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cwd: dirs.test(), h::pipeline(
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r#"
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echo hello world
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| split-row " "
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| ^echo $it
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"#
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));
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#[cfg(windows)]
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assert_eq!("hello world", stdout);
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#[cfg(not(windows))]
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assert_eq!("helloworld", stdout);
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assert!(!stderr.contains("No such file or directory"));
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})
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}
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#[test]
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fn save_can_write_out_csv() {
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Playground::setup("save_test_2", |dirs, _| {
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let expected_file = dirs.test().join("cargo_sample.csv");
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nu!(
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cwd: dirs.root(),
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"open {}/cargo_sample.toml | get package | save save_test_2/cargo_sample.csv",
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dirs.formats()
|
|
);
|
|
|
|
let actual = h::file_contents(expected_file);
|
|
assert!(actual.contains("[Table],A shell for the GitHub era,2018,ISC,nu,0.1.1"));
|
|
})
|
|
}
|