use nu_test_support::nu; #[test] fn let_name_builtin_var() { let actual = nu!("let in = 3"); assert!(actual .err .contains("'in' is the name of a builtin Nushell variable")); } #[test] fn let_doesnt_mutate() { let actual = nu!("let i = 3; $i = 4"); assert!(actual.err.contains("immutable")); } #[test] fn let_takes_pipeline() { let actual = nu!(r#"let x = "hello world" | str length; print $x"#); assert_eq!(actual.out, "11"); } #[test] fn let_pipeline_allows_in() { let actual = nu!(r#"def foo [] { let x = $in | str length; print ($x + 10) }; "hello world" | foo"#); assert_eq!(actual.out, "21"); } #[test] fn mut_takes_pipeline() { let actual = nu!(r#"mut x = "hello world" | str length; print $x"#); assert_eq!(actual.out, "11"); } #[test] fn mut_pipeline_allows_in() { let actual = nu!(r#"def foo [] { mut x = $in | str length; print ($x + 10) }; "hello world" | foo"#); assert_eq!(actual.out, "21"); } #[test] fn let_pipeline_redirects_internals() { let actual = nu!(r#"let x = echo 'bar'; $x | str length"#); assert_eq!(actual.out, "3"); } #[test] fn let_pipeline_redirects_externals() { let actual = nu!(r#"let x = nu --testbin cococo 'bar'; $x | str length"#); assert_eq!(actual.out, "3"); } #[test] fn let_err_pipeline_redirects_externals() { let actual = nu!( r#"let x = with-env { FOO: "foo" } {nu --testbin echo_env_stderr FOO e>| str length}; $x"# ); assert_eq!(actual.out, "3"); } #[test] fn let_outerr_pipeline_redirects_externals() { let actual = nu!( r#"let x = with-env { FOO: "foo" } {nu --testbin echo_env_stderr FOO o+e>| str length}; $x"# ); assert_eq!(actual.out, "3"); } #[ignore] #[test] fn let_with_external_failed() { // FIXME: this test hasn't run successfully for a long time. We should // bring it back to life at some point. let actual = nu!(r#"let x = nu --testbin outcome_err "aa"; echo fail"#); assert!(!actual.out.contains("fail")); } #[test] fn let_glob_type() { let actual = nu!("let x: glob = 'aa'; $x | describe"); assert_eq!(actual.out, "glob"); }