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, acc| $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#" [{month:2,total:30}, {month:3,total:10}, {month:4,total:3}, {month:5,total:60}] | reduce -f 20 { |it, acc| $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#" [[a,b]; [1,2] [3,4]] | reduce -f 1.6 { |it, acc| $acc * ($it.a | into int) + ($it.b | into int) } "# ) ); assert_eq!(actual.out, "14.8"); } #[test] fn reduce_numbered_example() { let actual = nu!( cwd: ".", pipeline( r#" echo one longest three bar | reduce -n { |it, acc| if ($it.item | str length) > ($acc.item | str length) {echo $it} else {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 { |it, acc| $acc.item + $it.item } "# ) ); assert_eq!(actual.out, "10"); } #[test] fn folding_with_tables() { let actual = nu!( cwd: ".", pipeline( r#" echo [10 20 30 40] | reduce -f [] { |it, acc| with-env [value $it] { echo $acc | append (10 * ($env.value | into 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 { |it, acc| $acc + $it } "# ) ); assert!(actual.err.contains("mismatch")); } #[test] fn error_reduce_empty() { let actual = nu!( cwd: ".", pipeline( r#" reduce { |it, acc| $acc + $it } "# ) ); assert!(actual.err.contains("needs input")); }