use std::path::Path; use gix_testtools::Result; #[test]fn extract_interpreter() -> gix_testtools::Result {    let root = gix_testtools::scripted_fixture_read_only("win_path_lookup.sh")?;    assert_eq!(        gix_command::extract_interpreter(&root.join("b").join("exe")),        Some(gix_command::shebang::Data {            interpreter: Path::new("/b/exe").into(),            args: vec![]        })    );    Ok(())} mod shebang {    mod parse {        use gix_command::shebang;         fn parse(input: &str) -> Option<shebang::Data> {            shebang::parse(input.into())        }         fn exe(name: &str) -> Option<shebang::Data> {            shebang::Data {                interpreter: name.into(),                args: Vec::new(),            }            .into()        }         fn exe_arg(name: &str, arg: &str) -> Option<shebang::Data> {            shebang::Data {                interpreter: name.into(),                args: shell_words::split(arg)                    .expect("can parse")                    .into_iter()                    .map(Into::into)                    .collect(),            }            .into()        }         #[test]        fn valid() {            assert_eq!(parse("#!/bin/sh"), exe("/bin/sh"));            assert_eq!(parse("#!/bin/sh   "), exe("/bin/sh"), "trim trailing whitespace");            assert_eq!(                parse("#!/bin/sh\t\nother"),                exe("/bin/sh"),                "trimming works for tabs as well"            );            assert_eq!(                parse(r"#!\bin\sh"),                exe(r"\bin\sh"),                "backslashes are recognized as path separator"            );            assert_eq!(                parse("#!C:\\Program Files\\shell.exe\r\nsome stuff"),                exe(r"C:\Program Files\shell.exe"),                "absolute windows paths are fine"            );            assert_eq!(                parse("#!/bin/sh -i -o -u\nunrelated content"),                exe_arg("/bin/sh", "-i -o -u"),                "argument splitting happens as well"            );            assert_eq!(                parse("#!/bin/sh  -o\nunrelated content"),                exe_arg("/bin/sh", "-o"),                "single arguments are OK too"            );            assert_eq!(                parse("#!/bin/exe anything goes\nunrelated content"),                exe_arg("/bin/exe", "anything goes"),                "any argument works"            );             #[cfg(unix)]            {                use std::os::unix::ffi::OsStrExt;                 use bstr::ByteSlice;                assert_eq!(                    shebang::parse(b"#!/bin/sh   -x \xC3\x28\x41 -y  ".as_bstr()),                    Some(shebang::Data {                        interpreter: "/bin/sh".into(),                        args: vec![std::ffi::OsStr::from_bytes(b"-x \xC3\x28\x41 -y").to_owned()]                    }),                    "illformed UTF8 in the arguments leads to them not being split - useful in case it's just one path or so"                );                 assert_eq!(                    shebang::parse(b"#!/bin/\xC3\x28\x41 ".as_bstr()),                    Some(shebang::Data {                        interpreter: std::ffi::OsStr::from_bytes(b"/bin/\xC3\x28\x41").to_owned().into(),                        args: vec![]                    }),                    "illformed UTF8 in the executable path is fine as well"                );            }        }         #[test]        fn invalid() {            assert_eq!(parse(""), None);            assert_eq!(parse("missing shebang"), None);            assert_eq!(parse("#!missing-slash"), None);            assert_eq!(                parse("/bin/sh"),                None,                "shebang missing, even though a valid path is given"            );        }    }} mod context {    use gix_command::Context;     fn winfix(expected: impl Into<String>) -> String {        // Unclear why it's not debug-printing the env on windows.        if cfg!(windows) {            "\"\"".into()        } else {            expected.into()        }    }     #[test]    fn git_dir_sets_git_dir_env_and_cwd() {        let ctx = Context {            git_dir: Some(".".into()),            ..Default::default()        };        let cmd = std::process::Command::from(gix_command::prepare("").with_context(ctx));        assert_eq!(format!("{cmd:?}"), winfix(r#"GIT_DIR="." """#));    }     #[test]    fn worktree_dir_sets_env_only() {        let ctx = Context {            worktree_dir: Some(".".into()),            ..Default::default()        };        let cmd = std::process::Command::from(gix_command::prepare("").with_context(ctx));        assert_eq!(format!("{cmd:?}"), winfix(r#"GIT_WORK_TREE="." """#));    }     #[test]    fn no_replace_objects_sets_env_only() {        for value in [false, true] {            let expected = usize::from(value);            let ctx = Context {                no_replace_objects: Some(value),                ..Default::default()            };            let cmd = std::process::Command::from(gix_command::prepare("").with_context(ctx));            assert_eq!(                format!("{cmd:?}"),                winfix(format!(r#"GIT_NO_REPLACE_OBJECTS="{expected}" """#))            );        }    }     #[test]    fn ref_namespace_sets_env_only() {        let ctx = Context {            ref_namespace: Some("namespace".into()),            ..Default::default()        };        let cmd = std::process::Command::from(gix_command::prepare("").with_context(ctx));        assert_eq!(format!("{cmd:?}"), winfix(r#"GIT_NAMESPACE="namespace" """#));    }     #[test]    fn literal_pathspecs_sets_env_only() {        for value in [false, true] {            let expected = usize::from(value);            let ctx = Context {                literal_pathspecs: Some(value),                ..Default::default()            };            let cmd = std::process::Command::from(gix_command::prepare("").with_context(ctx));            assert_eq!(                format!("{cmd:?}"),                winfix(format!(r#"GIT_LITERAL_PATHSPECS="{expected}" """#))            );        }    }     #[test]    fn glob_pathspecs_sets_env_only() {        for (value, expected) in [            (false, r#"GIT_NOGLOB_PATHSPECS="1""#),            (true, r#"GIT_GLOB_PATHSPECS="1""#),        ] {            let ctx = Context {                glob_pathspecs: Some(value),                ..Default::default()            };            let cmd = std::process::Command::from(gix_command::prepare("").with_context(ctx));            assert_eq!(format!("{cmd:?}"), winfix(format!(r#"{expected} """#)));        }    }     #[test]    fn icase_pathspecs_sets_env_only() {        for value in [false, true] {            let expected = usize::from(value);            let ctx = Context {                icase_pathspecs: Some(value),                ..Default::default()            };            let cmd = std::process::Command::from(gix_command::prepare("").with_context(ctx));            assert_eq!(                format!("{cmd:?}"),                winfix(format!(r#"GIT_ICASE_PATHSPECS="{expected}" """#))            );        }    }} mod prepare {    use std::sync::LazyLock;     static SH: LazyLock<&'static str> = LazyLock::new(|| {        gix_path::env::shell()            .to_str()            .expect("`prepare` tests must be run where 'sh' path is valid Unicode")    });     fn quoted(input: &[&str]) -> String {        input.iter().map(|s| format!("\"{s}\"")).collect::<Vec<_>>().join(" ")    }     #[test]    fn empty() {        let cmd = std::process::Command::from(gix_command::prepare(""));        assert_eq!(format!("{cmd:?}"), "\"\"");    }     #[test]    fn single_and_multiple_arguments() {        let cmd = std::process::Command::from(gix_command::prepare("ls").arg("first").args(["second", "third"]));        assert_eq!(format!("{cmd:?}"), quoted(&["ls", "first", "second", "third"]));    }     #[test]    fn multiple_arguments_in_one_line_with_auto_split() {        let cmd = std::process::Command::from(            gix_command::prepare("echo first second third")                .command_may_be_shell_script_allow_manual_argument_splitting(),        );        assert_eq!(            format!("{cmd:?}"),            quoted(&["echo", "first", "second", "third"]),            "we split by hand which works unless one tries to rely on shell-builtins (which we can't detect)"        );    }     #[test]    fn single_and_multiple_arguments_as_part_of_command() {        let cmd = std::process::Command::from(gix_command::prepare("ls first second third"));        assert_eq!(            format!("{cmd:?}"),            quoted(&["ls first second third"]),            "without shell, this is an invalid command"        );    }     #[test]    fn single_and_multiple_arguments_as_part_of_command_with_shell() {        let cmd =            std::process::Command::from(gix_command::prepare("ls first second third").command_may_be_shell_script());        assert_eq!(            format!("{cmd:?}"),            if cfg!(windows) {                quoted(&["ls", "first", "second", "third"])            } else {                quoted(&[*SH, "-c", "ls first second third", "--"])            },            "with shell, this works as it performs word splitting"        );    }     #[test]    fn single_and_multiple_arguments_as_part_of_command_with_given_shell() {        let cmd = std::process::Command::from(            gix_command::prepare("ls first second third")                .command_may_be_shell_script()                .with_shell_program("/somepath/to/bash"),        );        assert_eq!(            format!("{cmd:?}"),            if cfg!(windows) {                quoted(&["ls", "first", "second", "third"])            } else {                quoted(&["/somepath/to/bash", "-c", "ls first second third", "--"])            },            "with shell, this works as it performs word splitting on Windows, but on linux (or without splitting) it uses the given shell"        );    }     #[test]    fn single_and_complex_arguments_as_part_of_command_with_shell() {        let cmd = std::process::Command::from(            gix_command::prepare(r#"ls --foo "a b""#)                .arg("additional")                .command_may_be_shell_script(),        );        assert_eq!(            format!("{cmd:?}"),            if cfg!(windows) {                quoted(&["ls", "--foo", "a b", "additional"])            } else {                let sh = *SH;                format!(r#""{sh}" "-c" "ls --foo \"a b\" \"$@\"" "--" "additional""#)            },            "with shell, this works as it performs word splitting, on windows we can avoid the shell"        );    }     #[test]    fn single_and_complex_arguments_with_auto_split() {        let cmd = std::process::Command::from(            gix_command::prepare(r#"ls --foo="a b""#).command_may_be_shell_script_allow_manual_argument_splitting(),        );        assert_eq!(            format!("{cmd:?}"),            format!(r#""ls" "--foo=a b""#),            "splitting can also handle quotes"        );    }     #[test]    fn single_and_complex_arguments_without_auto_split() {        let cmd = std::process::Command::from(            gix_command::prepare(r#"ls --foo="a b""#).command_may_be_shell_script_disallow_manual_argument_splitting(),        );        assert_eq!(format!("{cmd:?}"), quoted(&[*SH, "-c", r#"ls --foo=\"a b\""#, "--"]));    }     #[test]    fn single_and_simple_arguments_without_auto_split_with_shell() {        let cmd = std::process::Command::from(gix_command::prepare("ls").arg("--foo=a b").with_shell());        assert_eq!(            format!("{cmd:?}"),            quoted(&[*SH, "-c", r#"ls \"$@\""#, "--", "--foo=a b"])        );    }     #[test]    fn quoted_command_without_argument_splitting() {        let cmd = std::process::Command::from(            gix_command::prepare("ls")                .arg("--foo=a b")                .with_shell()                .with_quoted_command(),        );        assert_eq!(            format!("{cmd:?}"),            quoted(&[*SH, "-c", r#"\'ls\' \"$@\""#, "--", "--foo=a b"]),            "looks strange thanks to debug printing, but is the right amount of quotes actually"        );    }     #[test]    fn quoted_windows_command_without_argument_splitting() {        let cmd = std::process::Command::from(            gix_command::prepare(r"C:\Users\O'Shaughnessy\with space.exe")                .arg("--foo='a b'")                .with_shell()                .with_quoted_command(),        );        assert_eq!(            format!("{cmd:?}"),            quoted(&[                *SH,                "-c",                r#"\'C:\\Users\\O\'\\\'\'Shaughnessy\\with space.exe\' \"$@\""#,                "--",                r"--foo=\'a b\'"            ]),            "again, a lot of extra backslashes, but it's correct outside of the debug formatting"        );    }     #[test]    fn single_and_complex_arguments_will_not_auto_split_on_special_characters() {        let cmd = std::process::Command::from(            gix_command::prepare("ls --foo=~/path").command_may_be_shell_script_allow_manual_argument_splitting(),        );        let sh = *SH;        assert_eq!(            format!("{cmd:?}"),            format!(r#""{sh}" "-c" "ls --foo=~/path" "--""#),            "splitting can also handle quotes"        );    }     #[test]    fn tilde_path_and_multiple_arguments_as_part_of_command_with_shell() {        let cmd =            std::process::Command::from(gix_command::prepare(r#"~/bin/exe --foo "a b""#).command_may_be_shell_script());        let sh = *SH;        assert_eq!(            format!("{cmd:?}"),            format!(r#""{sh}" "-c" "~/bin/exe --foo \"a b\"" "--""#),            "this always needs a shell as we need tilde expansion"        );    }     #[test]    fn script_with_dollar_at() {        let cmd = std::process::Command::from(            gix_command::prepare(r#"echo "$@" >&2"#)                .command_may_be_shell_script()                .arg("store"),        );        let sh = *SH;        assert_eq!(            format!("{cmd:?}"),            format!(r#""{sh}" "-c" "echo \"$@\" >&2" "--" "store""#),            "this is how credential helpers have to work as for some reason they don't get '$@' added in Git.\            We deal with it by not doubling the '$@' argument, which seems more flexible."        );    }     #[test]    fn script_with_dollar_at_has_no_quoting() {        let cmd = std::process::Command::from(            gix_command::prepare(r#"echo "$@" >&2"#)                .command_may_be_shell_script()                .with_quoted_command()                .arg("store"),        );        let sh = *SH;        assert_eq!(            format!("{cmd:?}"),            format!(r#""{sh}" "-c" "echo \"$@\" >&2" "--" "store""#)        );    }} mod spawn {    use bstr::ByteSlice;     #[test]    fn environment_variables_are_passed_one_by_one() -> crate::Result {        let out = gix_command::prepare("echo $FIRST $SECOND")            .env("FIRST", "first")            .env("SECOND", "second")            .command_may_be_shell_script()            .spawn()?            .wait_with_output()?;        assert_eq!(out.stdout.as_bstr(), "first second\n");        Ok(())    }     #[test]    fn disallow_shell() -> crate::Result {        let out = gix_command::prepare("PATH= echo hi")            .command_may_be_shell_script_disallow_manual_argument_splitting()            .spawn()?            .wait_with_output()?;        assert_eq!(out.stdout.as_bstr(), "hi\n");         let mut cmd: std::process::Command = gix_command::prepare("echo hi")            .command_may_be_shell_script()            .without_shell()            .into();        assert!(            cmd.env_remove("PATH").spawn().is_err(),            "no command named 'echo hi' exists"        );        Ok(())    }     #[test]    fn script_with_dollar_at() -> crate::Result {        let out = std::process::Command::from(            gix_command::prepare(r#"echo "$@""#)                .command_may_be_shell_script()                .arg("arg"),        )        .spawn()?        .wait_with_output()?;        assert_eq!(            out.stdout.to_str_lossy().trim(),            "arg",            "the argument is just mentioned once"        );        Ok(())    }     #[test]    fn direct_command_execution_searches_in_path() -> crate::Result {

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