719 lines
15 KiB
Rust
719 lines
15 KiB
Rust
#![allow(dead_code)]
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#[macro_use]
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extern crate error_chain;
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#[test]
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fn smoke_test_1() {
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error_chain! {
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types {
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Error, ErrorKind, ResultExt, Result;
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}
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links { }
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foreign_links { }
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errors { }
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};
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}
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#[test]
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fn smoke_test_2() {
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error_chain! {
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types { }
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links { }
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foreign_links { }
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errors { }
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};
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}
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#[test]
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fn smoke_test_3() {
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error_chain! {
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links { }
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foreign_links { }
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errors { }
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};
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}
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#[test]
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fn smoke_test_4() {
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error_chain! {
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links { }
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foreign_links { }
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errors {
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HttpStatus(e: u32) {
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description("http request returned an unsuccessful status code")
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display("http request returned an unsuccessful status code: {}", e)
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}
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}
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};
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}
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#[test]
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fn smoke_test_5() {
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error_chain! {
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types { }
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links { }
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foreign_links { }
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errors {
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HttpStatus(e: u32) {
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description("http request returned an unsuccessful status code")
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display("http request returned an unsuccessful status code: {}", e)
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}
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}
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};
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}
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#[test]
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fn smoke_test_6() {
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error_chain! {
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errors {
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HttpStatus(e: u32) {
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description("http request returned an unsuccessful status code")
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display("http request returned an unsuccessful status code: {}", e)
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}
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}
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};
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}
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#[test]
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fn smoke_test_7() {
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error_chain! {
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types { }
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foreign_links { }
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errors {
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HttpStatus(e: u32) {
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description("http request returned an unsuccessful status code")
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display("http request returned an unsuccessful status code: {}", e)
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}
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}
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};
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}
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#[test]
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fn smoke_test_8() {
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error_chain! {
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types { }
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links { }
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links { }
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foreign_links { }
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foreign_links { }
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errors {
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FileNotFound
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AccessDenied
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}
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};
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}
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#[test]
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fn order_test_1() {
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error_chain! { types { } links { } foreign_links { } errors { } };
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}
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#[test]
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fn order_test_2() {
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error_chain! { links { } types { } foreign_links { } errors { } };
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}
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#[test]
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fn order_test_3() {
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error_chain! { foreign_links { } links { } errors { } types { } };
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}
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#[test]
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fn order_test_4() {
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error_chain! { errors { } types { } foreign_links { } };
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}
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#[test]
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fn order_test_5() {
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error_chain! { foreign_links { } types { } };
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}
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#[test]
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fn order_test_6() {
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error_chain! {
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links { }
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errors {
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HttpStatus(e: u32) {
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description("http request returned an unsuccessful status code")
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display("http request returned an unsuccessful status code: {}", e)
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}
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}
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foreign_links { }
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};
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}
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#[test]
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fn order_test_7() {
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error_chain! {
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links { }
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foreign_links { }
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types {
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Error, ErrorKind, ResultExt, Result;
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}
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};
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}
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#[test]
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fn order_test_8() {
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error_chain! {
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links { }
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foreign_links { }
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foreign_links { }
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types {
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Error, ErrorKind, ResultExt, Result;
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}
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};
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}
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#[test]
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fn empty() {
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error_chain! {};
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}
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#[test]
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#[cfg(feature = "backtrace")]
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fn has_backtrace_depending_on_env() {
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use std::path::PathBuf;
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use std::process::Command;
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let cmd_folder = if cfg!(build = "debug") {
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"debug"
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} else if cfg!(build = "release") {
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"release"
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} else {
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panic!("Unknown build config");
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};
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let cmd_path = if cfg!(windows) {
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PathBuf::from(format!(
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"./target/{}/examples/has_backtrace.exe",
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cmd_folder
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))
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} else {
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PathBuf::from(format!("./target/{}/examples/has_backtrace", cmd_folder))
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};
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let mut cmd = Command::new(cmd_path);
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// missing RUST_BACKTRACE and RUST_BACKTRACE=0
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cmd.env_remove("RUST_BACKTRACE");
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assert_eq!(cmd.status().unwrap().code().unwrap(), 0);
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cmd.env("RUST_BACKTRACE", "0");
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assert_eq!(cmd.status().unwrap().code().unwrap(), 0);
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// RUST_BACKTRACE set to anything but 0
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cmd.env("RUST_BACKTRACE", "yes");
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assert_eq!(cmd.status().unwrap().code().unwrap(), 1);
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cmd.env("RUST_BACKTRACE", "1");
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assert_eq!(cmd.status().unwrap().code().unwrap(), 1);
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}
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#[test]
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fn chain_err() {
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use std::fmt;
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error_chain! {
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foreign_links {
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Fmt(fmt::Error);
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}
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errors {
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Test
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}
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}
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let _: Result<()> = Err(fmt::Error).chain_err(|| "");
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let _: Result<()> = Err(Error::from_kind(ErrorKind::Test)).chain_err(|| "");
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}
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/// Verify that an error chain is extended one by `Error::chain_err`, with
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/// the new error added to the end.
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#[test]
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fn error_chain_err() {
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error_chain! {
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errors {
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Test
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}
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}
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let base = Error::from(ErrorKind::Test);
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let ext = base.chain_err(|| "Test passes");
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if let Error(ErrorKind::Msg(_), _) = ext {
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// pass
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} else {
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panic!("The error should be wrapped. {:?}", ext);
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}
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}
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#[test]
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fn links() {
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mod test {
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error_chain! {}
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}
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error_chain! {
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links {
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Test(test::Error, test::ErrorKind);
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}
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}
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}
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#[cfg(test)]
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mod foreign_link_test {
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use std::fmt;
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// Note: foreign errors must be `pub` because they appear in the
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// signature of the public foreign_link_error_path
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#[derive(Debug)]
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pub struct ForeignError {
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cause: ForeignErrorCause,
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}
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impl ::std::error::Error for ForeignError {
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fn description(&self) -> &'static str {
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"Foreign error description"
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}
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#[cfg(not(has_error_source))]
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fn cause(&self) -> Option<&::std::error::Error> {
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Some(&self.cause)
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}
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#[cfg(has_error_source)]
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fn source(&self) -> Option<&(dyn std::error::Error + 'static)> {
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Some(&self.cause)
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}
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}
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impl fmt::Display for ForeignError {
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fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
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write!(formatter, "Foreign error display")
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}
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}
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#[derive(Debug)]
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pub struct ForeignErrorCause {}
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impl ::std::error::Error for ForeignErrorCause {
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fn description(&self) -> &'static str {
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"Foreign error cause description"
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}
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#[cfg(not(has_error_source))]
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fn cause(&self) -> Option<&::std::error::Error> {
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None
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}
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#[cfg(has_error_source)]
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fn source(&self) -> Option<&(dyn std::error::Error + 'static)> {
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None
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}
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}
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impl fmt::Display for ForeignErrorCause {
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fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
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write!(formatter, "Foreign error cause display")
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}
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}
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error_chain! {
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types{
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Error, ErrorKind, ResultExt, Result;
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}
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links {}
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foreign_links {
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Foreign(ForeignError);
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Io(::std::io::Error);
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}
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errors {}
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}
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#[test]
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fn display_underlying_error() {
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let chained_error = try_foreign_error().err().unwrap();
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assert_eq!(
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format!(
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"{}",
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ForeignError {
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cause: ForeignErrorCause {}
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}
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),
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format!("{}", chained_error)
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);
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}
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#[test]
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#[cfg(not(has_error_source))]
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fn finds_cause() {
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let chained_error = try_foreign_error().err().unwrap();
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assert_eq!(
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format!("{}", ForeignErrorCause {}),
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format!("{}", ::std::error::Error::cause(&chained_error).unwrap())
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);
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}
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#[test]
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#[cfg(has_error_source)]
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fn finds_source() {
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let chained_error = try_foreign_error().err().unwrap();
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assert_eq!(
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format!("{}", ForeignErrorCause {}),
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format!("{}", ::std::error::Error::source(&chained_error).unwrap())
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);
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}
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#[test]
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#[allow(unknown_lints, bare_trait_objects)]
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fn iterates() {
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let chained_error = try_foreign_error().err().unwrap();
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let mut error_iter = chained_error.iter();
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assert!(!format!("{:?}", error_iter).is_empty());
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assert_eq!(
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format!(
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"{}",
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ForeignError {
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cause: ForeignErrorCause {}
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}
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),
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format!("{}", error_iter.next().unwrap())
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||
);
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assert_eq!(
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format!("{}", ForeignErrorCause {}),
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format!("{}", error_iter.next().unwrap())
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);
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assert_eq!(
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format!("{:?}", None as Option<&::std::error::Error>),
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format!("{:?}", error_iter.next())
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);
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}
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fn try_foreign_error() -> Result<()> {
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Err(ForeignError {
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cause: ForeignErrorCause {},
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||
})?;
|
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Ok(())
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||
}
|
||
}
|
||
|
||
#[cfg(test)]
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||
mod attributes_test {
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||
#[allow(unused_imports)]
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||
use std::io;
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||
|
||
#[cfg(not(test))]
|
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mod inner {
|
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error_chain! {}
|
||
}
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||
|
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error_chain! {
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||
types {
|
||
Error, ErrorKind, ResultExt, Result;
|
||
}
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||
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links {
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Inner(inner::Error, inner::ErrorKind) #[cfg(not(test))];
|
||
}
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||
|
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foreign_links {
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Io(io::Error) #[cfg(not(test))];
|
||
}
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||
|
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errors {
|
||
#[cfg(not(test))]
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AnError {
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||
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}
|
||
}
|
||
}
|
||
}
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||
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#[test]
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fn with_result() {
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error_chain! {
|
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types {
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||
Error, ErrorKind, ResultExt, Result;
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||
}
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||
}
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let _: Result<()> = Ok(());
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||
}
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#[test]
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||
fn without_result() {
|
||
error_chain! {
|
||
types {
|
||
Error, ErrorKind, ResultExt;
|
||
}
|
||
}
|
||
let _: Result<(), ()> = Ok(());
|
||
}
|
||
|
||
#[test]
|
||
fn documentation() {
|
||
mod inner {
|
||
error_chain! {}
|
||
}
|
||
|
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error_chain! {
|
||
links {
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Inner(inner::Error, inner::ErrorKind) #[doc = "Doc"];
|
||
}
|
||
foreign_links {
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Io(::std::io::Error) #[doc = "Doc"];
|
||
}
|
||
errors {
|
||
/// Doc
|
||
Variant
|
||
}
|
||
}
|
||
}
|
||
|
||
#[cfg(test)]
|
||
mod multiple_error_same_mod {
|
||
error_chain! {
|
||
types {
|
||
MyError, MyErrorKind, MyResultExt, MyResult;
|
||
}
|
||
}
|
||
error_chain! {}
|
||
}
|
||
|
||
#[doc(test)]
|
||
#[deny(dead_code)]
|
||
mod allow_dead_code {
|
||
error_chain! {}
|
||
}
|
||
|
||
// Make sure links actually work!
|
||
#[test]
|
||
fn rustup_regression() {
|
||
error_chain! {
|
||
links {
|
||
Download(error_chain::mock::Error, error_chain::mock::ErrorKind);
|
||
}
|
||
|
||
foreign_links { }
|
||
|
||
errors {
|
||
LocatingWorkingDir {
|
||
description("could not locate working directory")
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
#[test]
|
||
fn error_patterns() {
|
||
error_chain! {
|
||
links { }
|
||
|
||
foreign_links { }
|
||
|
||
errors { }
|
||
}
|
||
|
||
// Tuples look nice when matching errors
|
||
match Error::from("Test") {
|
||
Error(ErrorKind::Msg(_), _) => {}
|
||
_ => {}
|
||
}
|
||
}
|
||
|
||
#[test]
|
||
fn result_match() {
|
||
error_chain! {}
|
||
|
||
fn ok() -> Result<()> {
|
||
Ok(())
|
||
}
|
||
|
||
match ok() {
|
||
Ok(()) => {}
|
||
Err(Error(ErrorKind::Msg(_), _)) => {}
|
||
Err(..) => {}
|
||
}
|
||
}
|
||
|
||
#[test]
|
||
fn error_first() {
|
||
error_chain! {
|
||
errors {
|
||
LocatingWorkingDir {
|
||
description("could not locate working directory")
|
||
}
|
||
}
|
||
|
||
links {
|
||
Download(error_chain::mock::Error, error_chain::mock::ErrorKind);
|
||
}
|
||
|
||
foreign_links { }
|
||
}
|
||
}
|
||
|
||
#[test]
|
||
fn bail() {
|
||
error_chain! {
|
||
errors { Foo }
|
||
}
|
||
|
||
fn foo() -> Result<()> {
|
||
bail!(ErrorKind::Foo)
|
||
}
|
||
|
||
fn bar() -> Result<()> {
|
||
bail!("bar")
|
||
}
|
||
|
||
fn baz() -> Result<()> {
|
||
bail!("{}", "baz")
|
||
}
|
||
}
|
||
|
||
#[test]
|
||
fn ensure() {
|
||
error_chain! {
|
||
errors { Bar }
|
||
}
|
||
|
||
fn foo(x: u8) -> Result<()> {
|
||
ensure!(x == 42, ErrorKind::Bar);
|
||
Ok(())
|
||
}
|
||
|
||
assert!(foo(42).is_ok());
|
||
assert!(foo(0).is_err());
|
||
}
|
||
|
||
/// Since the `types` declaration is a list of symbols, check if we
|
||
/// don't change their meaning or order.
|
||
#[test]
|
||
fn types_declarations() {
|
||
error_chain! {
|
||
types {
|
||
MyError, MyErrorKind, MyResultExt, MyResult;
|
||
}
|
||
}
|
||
|
||
MyError::from_kind(MyErrorKind::Msg("".into()));
|
||
|
||
let err: Result<(), ::std::io::Error> = Ok(());
|
||
MyResultExt::chain_err(err, || "").unwrap();
|
||
|
||
let _: MyResult<()> = Ok(());
|
||
}
|
||
|
||
#[test]
|
||
/// Calling chain_err over a `Result` containing an error to get a chained error
|
||
/// and constructing a MyError directly, passing it an error should be equivalent.
|
||
fn rewrapping() {
|
||
use std::env::VarError::{self, NotPresent, NotUnicode};
|
||
|
||
error_chain! {
|
||
foreign_links {
|
||
VarErr(VarError);
|
||
}
|
||
|
||
types {
|
||
MyError, MyErrorKind, MyResultExt, MyResult;
|
||
}
|
||
}
|
||
|
||
let result_a_from_func: Result<String, _> = Err(VarError::NotPresent);
|
||
let result_b_from_func: Result<String, _> = Err(VarError::NotPresent);
|
||
|
||
let our_error_a = result_a_from_func.map_err(|e| match e {
|
||
NotPresent => MyError::with_chain(e, "env var wasn't provided"),
|
||
NotUnicode(_) => MyError::with_chain(e, "env var was borkæ–‡å—化ã"),
|
||
});
|
||
|
||
let our_error_b = result_b_from_func.or_else(|e| match e {
|
||
NotPresent => Err(e).chain_err(|| "env var wasn't provided"),
|
||
NotUnicode(_) => Err(e).chain_err(|| "env var was borkæ–‡å—化ã"),
|
||
});
|
||
|
||
assert_eq!(
|
||
format!("{}", our_error_a.unwrap_err()),
|
||
format!("{}", our_error_b.unwrap_err())
|
||
);
|
||
}
|
||
|
||
#[test]
|
||
fn comma_in_errors_impl() {
|
||
error_chain! {
|
||
links { }
|
||
|
||
foreign_links { }
|
||
|
||
errors {
|
||
HttpStatus(e: u32) {
|
||
description("http request returned an unsuccessful status code"),
|
||
display("http request returned an unsuccessful status code: {}", e)
|
||
}
|
||
}
|
||
};
|
||
}
|
||
|
||
#[test]
|
||
fn trailing_comma_in_errors_impl() {
|
||
error_chain! {
|
||
links { }
|
||
|
||
foreign_links { }
|
||
|
||
errors {
|
||
HttpStatus(e: u32) {
|
||
description("http request returned an unsuccessful status code"),
|
||
display("http request returned an unsuccessful status code: {}", e),
|
||
}
|
||
}
|
||
};
|
||
}
|
||
|
||
#[test]
|
||
fn skipping_msg_variant() {
|
||
error_chain! {
|
||
skip_msg_variant
|
||
|
||
errors {
|
||
MyMsg(s: String) {
|
||
description(&s)
|
||
display("{}", s)
|
||
}
|
||
}
|
||
}
|
||
|
||
let x = Error::from_kind(ErrorKind::MyMsg("some string".into()));
|
||
// This would fail to compile if we generate a `Msg` variant
|
||
match *x.kind() {
|
||
ErrorKind::MyMsg(_) => {}
|
||
ErrorKind::__Nonexhaustive {} => {}
|
||
}
|
||
}
|