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5d5088b5d5
Allow `++=` to work in all situations `++` does, namely for appending single elements: `$list ++= 1`. Resolve #11087 # Description Bring `++=` to parity with `++`. # User-Facing Changes It is now possible to do `$list ++= 1` (appending a single element). Similarly, this can be done: ```Nushell ~> mut a = [1] ~> $a ++= 2 ~> a ╭───┬───╮ │ 0 │ 1 │ │ 1 │ 2 │ ╰───┴───╯ ``` # Tests + Formatting Added two tests: - `commands::assignment::append_assign::append_assign_single_element` - `commands::assignment::append_assign::append_assign_to_single_element`
89 lines
1.7 KiB
Rust
89 lines
1.7 KiB
Rust
use nu_test_support::nu;
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#[test]
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fn append_assign_int() {
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let actual = nu!(r#"
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mut a = [1 2];
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$a ++= [3 4];
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$a == [1 2 3 4]
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"#);
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assert_eq!(actual.out, "true")
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}
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#[test]
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fn append_assign_string() {
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let actual = nu!(r#"
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mut a = [a b];
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$a ++= [c d];
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$a == [a b c d]
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"#);
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assert_eq!(actual.out, "true")
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}
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#[test]
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fn append_assign_any() {
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let actual = nu!(r#"
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mut a = [1 2 a];
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$a ++= [b 3];
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$a == [1 2 a b 3]
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"#);
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assert_eq!(actual.out, "true")
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}
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#[test]
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fn append_assign_both_empty() {
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let actual = nu!(r#"
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mut a = [];
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$a ++= [];
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$a == []
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"#);
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assert_eq!(actual.out, "true")
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}
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#[test]
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fn append_assign_type_mismatch() {
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let actual = nu!(r#"
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mut a = [1 2];
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$a ++= [a];
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$a == [1 2 "a"]
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"#);
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assert_eq!(actual.out, "true")
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}
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#[test]
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fn append_assign_single_element() {
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let actual = nu!(r#"
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mut a = ["list" "and"];
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$a ++= "a single element";
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$a == ["list" "and" "a single element"]
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"#);
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assert_eq!(actual.out, "true")
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}
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#[test]
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fn append_assign_to_single_element() {
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let actual = nu!(r#"
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mut a = "string";
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$a ++= ["and" "the" "list"];
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$a == ["string" "and" "the" "list"]
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"#);
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assert_eq!(actual.out, "true")
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}
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#[test]
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fn append_assign_single_to_single() {
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let actual = nu!(r#"
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mut a = 1;
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$a ++= "and a single element";
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"#);
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assert!(actual.err.contains("nu::parser::unsupported_operation"));
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}
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