add echo_env_mixed testbin to reduce windows only tests (#11172)

# Description
We have seen some test cases which requires to output message to both
stdout and stderr, especially in redirection scenario.

This pr is going to introduce a new echo_env_mixed testbin, so we can
have less tests which only runs on windows.

# User-Facing Changes
NaN

# Tests + Formatting
NaN

# After Submitting
NaN

crates/nu-command/tests/commands/redirection.rs

@@ -2,85 +2,43 @@ use nu_test_support::fs::{file_contents, Stub::FileWithContent};
 use nu_test_support::nu;
 use nu_test_support::playground::Playground;
 
-#[cfg(not(windows))]
 #[test]
 fn redirect_err() {
     Playground::setup("redirect_err_test", |dirs, _sandbox| {
         let output = nu!(
             cwd: dirs.test(),
-            "cat asdfasdfasdf.txt err> a.txt; cat a.txt"
+            r#"$env.BAZ = "asdfasdfasdf.txt"; nu --testbin echo_env_stderr BAZ err> a.txt; open a.txt"#
         );
-
         assert!(output.out.contains("asdfasdfasdf.txt"));
 
         // check append mode
         let output = nu!(
             cwd: dirs.test(),
-                "cat asdfasdfasdf.txt err>> a.txt; cat a.txt"
+            r#"$env.BAZ = "asdfasdfasdf.txt"; nu --testbin echo_env_stderr BAZ err>> a.txt; open a.txt"#
         );
         let v: Vec<_> = output.out.match_indices("asdfasdfasdf.txt").collect();
         assert_eq!(v.len(), 2);
     })
 }
 
-#[cfg(windows)]
-#[test]
-fn redirect_err() {
-    Playground::setup("redirect_err_test", |dirs, _sandbox| {
-        let output = nu!(
-            cwd: dirs.test(),
-            "vol missingdrive err> a; (open a | str stats).bytes >= 16"
-        );
-
-        assert!(output.out.contains("true"));
-
-        let output = nu!(
-            cwd: dirs.test(),
-            "vol missingdrive err>> a; (open a | str stats).bytes >= 32"
-        );
-        assert!(output.out.contains("true"));
-    })
-}
-
-#[cfg(not(windows))]
 #[test]
 fn redirect_outerr() {
     Playground::setup("redirect_outerr_test", |dirs, _sandbox| {
-        nu!(
+        let output = nu!(
             cwd: dirs.test(),
-            "cat asdfasdfasdf.txt out+err> a"
+            r#"$env.BAZ = "asdfasdfasdf.txt"; nu --testbin echo_env_stderr BAZ out+err> a.txt; open a.txt"#
         );
-        let output = nu!(cwd: dirs.test(), "cat a");
-
         assert!(output.out.contains("asdfasdfasdf.txt"));
 
-        let output = nu!(cwd: dirs.test(), "cat asdfasdfasdf.txt o+e>> a; cat a");
+        let output = nu!(
+            cwd: dirs.test(),
+            r#"$env.BAZ = "asdfasdfasdf.txt"; nu --testbin echo_env_stderr BAZ o+e>> a.txt; open a.txt"#
+        );
         let v: Vec<_> = output.out.match_indices("asdfasdfasdf.txt").collect();
         assert_eq!(v.len(), 2);
     })
 }
 
-#[cfg(windows)]
-#[test]
-fn redirect_outerr() {
-    Playground::setup("redirect_outerr_test", |dirs, _sandbox| {
-        nu!(
-            cwd: dirs.test(),
-            "vol missingdrive out+err> a"
-        );
-        let output = nu!(cwd: dirs.test(), "(open a | str stats).bytes >= 16");
-
-        assert!(output.out.contains("true"));
-
-        nu!(
-            cwd: dirs.test(),
-            "vol missingdrive out+err>> a"
-        );
-        let output = nu!(cwd: dirs.test(), "(open a | str stats).bytes >= 32");
-        assert!(output.out.contains("true"));
-    })
-}
-
 #[test]
 fn redirect_out() {
     Playground::setup("redirect_out_test", |dirs, _sandbox| {
@@ -123,29 +81,13 @@ foobar"#);
 fn separate_redirection() {
     Playground::setup(
         "external with both stdout and stderr messages, to different file",
-        |dirs, sandbox| {
-            let script_body = r#"
-        echo message
-        echo message 1>&2
-        "#;
+        |dirs, _| {
             let expect_body = "message";
+            nu!(
+                cwd: dirs.test(),
+                r#"$env.BAZ = "message"; nu --testbin echo_env_mixed out-err BAZ BAZ o> out.txt e> err.txt"#,
+            );
 
-            #[cfg(not(windows))]
-            {
-                sandbox.with_files(vec![FileWithContent("test.sh", script_body)]);
-                nu!(
-                    cwd: dirs.test(),
-                    "bash test.sh out> out.txt err> err.txt"
-                );
-            }
-            #[cfg(windows)]
-            {
-                sandbox.with_files(vec![FileWithContent("test.bat", script_body)]);
-                nu!(
-                    cwd: dirs.test(),
-                    "cmd /D /c test.bat out> out.txt err> err.txt"
-                );
-            }
             // check for stdout redirection file.
             let expected_out_file = dirs.test().join("out.txt");
             let actual = file_contents(expected_out_file);
@@ -155,12 +97,10 @@ fn separate_redirection() {
             let expected_err_file = dirs.test().join("err.txt");
             let actual = file_contents(expected_err_file);
             assert!(actual.contains(expect_body));
-            #[cfg(not(windows))]
-            {
-                sandbox.with_files(vec![FileWithContent("test.sh", script_body)]);
+
             nu!(
                 cwd: dirs.test(),
-                    "bash test.sh out>> out.txt err>> err.txt"
+                r#"$env.BAZ = "message"; nu --testbin echo_env_mixed out-err BAZ BAZ o>> out.txt e>> err.txt"#,
             );
             // check for stdout redirection file.
             let expected_out_file = dirs.test().join("out.txt");
@@ -173,7 +113,6 @@ fn separate_redirection() {
             let actual = file_contents(expected_err_file);
             let v: Vec<_> = actual.match_indices("message").collect();
             assert_eq!(v.len(), 2);
-            }
         },
     )
 }
@@ -247,35 +186,30 @@ fn redirection_keep_exit_codes() {
     )
 }
 
-#[cfg(not(windows))]
 #[test]
 fn redirection_with_pipeline_works() {
-    use nu_test_support::fs::{file_contents, Stub::FileWithContent};
+    use nu_test_support::fs::Stub::FileWithContent;
     use nu_test_support::playground::Playground;
     Playground::setup(
         "external with stdout message with pipeline should write data",
         |dirs, sandbox| {
             let script_body = r"echo message";
             let expect_body = "message";
+
             sandbox.with_files(vec![FileWithContent("test.sh", script_body)]);
 
-            nu!(
+            let actual = nu!(
                 cwd: dirs.test(),
-                "bash test.sh out> out.txt | describe"
+                r#"$env.BAZ = "message"; nu --testbin echo_env BAZ out> out.txt | describe; open out.txt"#,
             );
-            // check for stdout redirection file.
-            let expected_out_file = dirs.test().join("out.txt");
-            let actual = file_contents(expected_out_file);
-            assert!(actual.contains(expect_body));
+            assert!(actual.out.contains(expect_body));
 
             // check append mode works
-            nu!(
+            let actual = nu!(
                 cwd: dirs.test(),
-                "bash test.sh o>> out.txt | describe"
+                r#"$env.BAZ = "message"; nu --testbin echo_env BAZ out>> out.txt | describe; open out.txt"#,
             );
-            let expected_out_file = dirs.test().join("out.txt");
-            let actual = file_contents(expected_out_file);
-            let v: Vec<_> = actual.match_indices("message").collect();
+            let v: Vec<_> = actual.out.match_indices("message").collect();
             assert_eq!(v.len(), 2);
         },
     )
@@ -322,29 +256,15 @@ fn redirect_support_variable() {
 fn separate_redirection_support_variable() {
     Playground::setup(
         "external with both stdout and stderr messages, to different file",
-        |dirs, sandbox| {
-            let script_body = r#"
-        echo message
-        echo message 1>&2
-        "#;
+        |dirs, _| {
             let expect_body = "message";
-
-            #[cfg(not(windows))]
-            {
-                sandbox.with_files(vec![FileWithContent("test.sh", script_body)]);
             nu!(
                 cwd: dirs.test(),
-                    r#"let o_f = "out2.txt"; let e_f = "err2.txt"; bash test.sh out> $o_f err> $e_f"#
+                r#"
+            let o_f = "out2.txt"
+            let e_f = "err2.txt"
+            $env.BAZ = "message"; nu --testbin echo_env_mixed out-err BAZ BAZ o> $o_f e> $e_f"#,
             );
-            }
-            #[cfg(windows)]
-            {
-                sandbox.with_files(vec![FileWithContent("test.bat", script_body)]);
-                nu!(
-                    cwd: dirs.test(),
-                    r#"let o_f = "out2.txt"; let e_f = "err2.txt"; cmd /D /c test.bat out> $o_f err> $e_f"#
-                );
-            }
             // check for stdout redirection file.
             let expected_out_file = dirs.test().join("out2.txt");
             let actual = file_contents(expected_out_file);
@@ -355,12 +275,12 @@ fn separate_redirection_support_variable() {
             let actual = file_contents(expected_err_file);
             assert!(actual.contains(expect_body));
 
-            #[cfg(not(windows))]
-            {
-                sandbox.with_files(vec![FileWithContent("test.sh", script_body)]);
             nu!(
                 cwd: dirs.test(),
-                    r#"let o_f = "out2.txt"; let e_f = "err2.txt"; bash test.sh out>> $o_f err>> $e_f"#
+                r#"
+            let o_f = "out2.txt"
+            let e_f = "err2.txt"
+            $env.BAZ = "message"; nu --testbin echo_env_mixed out-err BAZ BAZ out>> $o_f err>> $e_f"#,
             );
             // check for stdout redirection file.
             let expected_out_file = dirs.test().join("out2.txt");
@@ -373,7 +293,6 @@ fn separate_redirection_support_variable() {
             let actual = file_contents(expected_err_file);
             let v: Vec<_> = actual.match_indices("message").collect();
             assert_eq!(v.len(), 2);
-            }
         },
     )
 }
@@ -401,43 +320,29 @@ fn redirection_should_have_a_target() {
 }
 
 #[test]
-#[cfg(not(windows))]
 fn redirection_with_pipe() {
-    use nu_test_support::fs::Stub::FileWithContent;
     use nu_test_support::playground::Playground;
     Playground::setup(
         "external with many stdout and stderr messages",
-        |dirs, sandbox| {
-            let script_body = r#"
-        x=$(printf '=%.0s' {1..40})
-        echo -n $x
-        echo -n $x 1>&2
-        "#;
-            let mut expect_body = String::new();
-            for _ in 0..40 {
-                expect_body.push('=');
-            }
-
-            sandbox.with_files(vec![FileWithContent("test.sh", script_body)]);
-
+        |dirs, _| {
             // check for stdout
             let actual = nu!(
                 cwd: dirs.test(),
-                "bash test.sh err> tmp_file | str length",
+                r#"$env.BAZ = "message"; nu --testbin echo_env_mixed out-err BAZ BAZ err> tmp_file | str length"#,
             );
 
-            assert_eq!(actual.out, "40");
+            assert_eq!(actual.out, "8");
             // check for stderr redirection file.
             let expected_out_file = dirs.test().join("tmp_file");
             let actual_len = file_contents(expected_out_file).len();
-            assert_eq!(actual_len, 40);
+            assert_eq!(actual_len, 8);
 
             // check it inside a function
             let actual = nu!(
                 cwd: dirs.test(),
-                "bash test.sh err> tmp_file; print aa"
+                r#"$env.BAZ = "message"; nu --testbin echo_env_mixed out-err BAZ BAZ err> tmp_file; print aa"#,
             );
-            assert!(actual.out.contains(&format!("{}aa", expect_body)));
+            assert!(actual.out.contains("messageaa"));
         },
     )
 }

src/main.rs

@@ -228,6 +228,7 @@ fn main() -> Result<()> {
         match testbin.item.as_str() {
             "echo_env" => test_bins::echo_env(true),
             "echo_env_stderr" => test_bins::echo_env(false),
+            "echo_env_mixed" => test_bins::echo_env_mixed(),
             "cococo" => test_bins::cococo(),
             "meow" => test_bins::meow(),
             "meowb" => test_bins::meowb(),

src/test_bins.rs

@@ -12,6 +12,11 @@ use std::io::{self, BufRead, Read, Write};
 pub fn echo_env(to_stdout: bool) {
     let args = args();
     for arg in args {
+        echo_one_env(&arg, to_stdout)
+    }
+}
+
+fn echo_one_env(arg: &str, to_stdout: bool) {
     if let Ok(v) = std::env::var(arg) {
         if to_stdout {
             println!("{v}");
@@ -20,6 +25,36 @@ pub fn echo_env(to_stdout: bool) {
         }
     }
 }
+
+/// Mix echo of env keys from input
+/// Example:
+///     * nu --testbin echo_env_mixed out-err FOO BAR
+///     * nu --testbin echo_env_mixed err-out FOO BAR
+/// If it's not present, panic instead
+pub fn echo_env_mixed() {
+    let args = args();
+    let args = &args[1..];
+
+    if args.len() != 3 {
+        panic!(
+            r#"Usage examples:
+* nu --testbin echo_env_mixed out-err FOO BAR
+* nu --testbin echo_env_mixed err-out FOO BAR"#
+        )
+    }
+    match args[0].as_str() {
+        "out-err" => {
+            let (out_arg, err_arg) = (&args[1], &args[2]);
+            echo_one_env(out_arg, true);
+            echo_one_env(err_arg, false);
+        }
+        "err-out" => {
+            let (err_arg, out_arg) = (&args[1], &args[2]);
+            echo_one_env(err_arg, false);
+            echo_one_env(out_arg, true);
+        }
+        _ => panic!("The mixed type must be `out_err`, `err_out`"),
+    }
 }
 
 /// Cross platform echo using println!()