use nu_test_support::{nu, pipeline}; #[test] fn reduce_table_column() { let actual = nu!( cwd: ".", pipeline( r#" echo "[{month:2,total:30}, {month:3,total:10}, {month:4,total:3}, {month:5,total:60}]" | from json | get total | reduce -f 20 { $it + (math eval $"($acc)^1.05")} | into string -d 1 "# ) ); assert_eq!(actual.out, "180.6"); } #[test] fn reduce_table_column_with_path() { let actual = nu!( cwd: ".", pipeline( r#" echo "[{month:2,total:30}, {month:3,total:10}, {month:4,total:3}, {month:5,total:60}]" | from json | reduce -f 20 { $it.total + (math eval $"($acc)^1.05")} | into string -d 1 "# ) ); assert_eq!(actual.out, "180.6"); } #[test] fn reduce_rows_example() { let actual = nu!( cwd: ".", pipeline( r#" echo a,b 1,2 3,4 | split column , | headers | reduce -f 1.6 { $acc * ($it.a | str to-int) + ($it.b | str to-int) } "# ) ); assert_eq!(actual.out, "14.8"); } #[test] fn reduce_numbered_example() { let actual = nu!( cwd: ".", pipeline( r#" echo one longest three bar | reduce -n { if ($it.item | str length) > ($acc.item | str length) {echo $it} {echo $acc}} | get index "# ) ); assert_eq!(actual.out, "1"); } #[test] fn reduce_numbered_integer_addition_example() { let actual = nu!( cwd: ".", pipeline( r#" echo [1 2 3 4] | reduce -n { $acc.item + $it.item } | get item "# ) ); assert_eq!(actual.out, "10"); } #[test] fn folding_with_tables() { let actual = nu!( cwd: ".", pipeline( r#" echo [10 20 30 40] | reduce -f [] { with-env [value $it] { echo $acc | append (10 * ($nu.env.value | str to-int)) } } | math sum "# ) ); assert_eq!(actual.out, "1000"); } #[test] fn error_reduce_fold_type_mismatch() { let actual = nu!( cwd: ".", pipeline( r#" echo a b c | reduce -f 0 { $acc + $it } "# ) ); assert!(actual.err.contains("Coercion")); } #[test] fn error_reduce_empty() { let actual = nu!( cwd: ".", pipeline( r#" reduce { $acc + $it } "# ) ); assert!(actual.err.contains("needs input")); }