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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
commit | 698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch) | |
tree | 173a775858bd501c378080a10dca74132f05bc50 /vendor/thiserror/tests/test_expr.rs | |
parent | Initial commit. (diff) | |
download | rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip |
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'vendor/thiserror/tests/test_expr.rs')
-rw-r--r-- | vendor/thiserror/tests/test_expr.rs | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/vendor/thiserror/tests/test_expr.rs b/vendor/thiserror/tests/test_expr.rs new file mode 100644 index 000000000..87a56cf58 --- /dev/null +++ b/vendor/thiserror/tests/test_expr.rs @@ -0,0 +1,89 @@ +#![deny(clippy::all, clippy::pedantic)] +#![allow(clippy::option_if_let_else)] + +use std::fmt::Display; +use thiserror::Error; + +// Some of the elaborate cases from the rcc codebase, which is a C compiler in +// Rust. https://github.com/jyn514/rcc/blob/0.8.0/src/data/error.rs +#[derive(Error, Debug)] +pub enum CompilerError { + #[error("cannot shift {} by {maximum} or more bits (got {current})", if *.is_left { "left" } else { "right" })] + TooManyShiftBits { + is_left: bool, + maximum: u64, + current: u64, + }, + + #[error("#error {}", (.0).iter().copied().collect::<Vec<_>>().join(" "))] + User(Vec<&'static str>), + + #[error("overflow while parsing {}integer literal", + if let Some(signed) = .is_signed { + if *signed { "signed "} else { "unsigned "} + } else { + "" + } + )] + IntegerOverflow { is_signed: Option<bool> }, + + #[error("overflow while parsing {}integer literal", match .is_signed { + Some(true) => "signed ", + Some(false) => "unsigned ", + None => "", + })] + IntegerOverflow2 { is_signed: Option<bool> }, +} + +// Examples drawn from Rustup. +#[derive(Error, Debug)] +pub enum RustupError { + #[error( + "toolchain '{name}' does not contain component {component}{}", + .suggestion + .as_ref() + .map_or_else(String::new, |s| format!("; did you mean '{}'?", s)), + )] + UnknownComponent { + name: String, + component: String, + suggestion: Option<String>, + }, +} + +fn assert<T: Display>(expected: &str, value: T) { + assert_eq!(expected, value.to_string()); +} + +#[test] +fn test_rcc() { + assert( + "cannot shift left by 32 or more bits (got 50)", + CompilerError::TooManyShiftBits { + is_left: true, + maximum: 32, + current: 50, + }, + ); + + assert("#error A B C", CompilerError::User(vec!["A", "B", "C"])); + + assert( + "overflow while parsing signed integer literal", + CompilerError::IntegerOverflow { + is_signed: Some(true), + }, + ); +} + +#[test] +fn test_rustup() { + assert( + "toolchain 'nightly' does not contain component clipy; did you mean 'clippy'?", + RustupError::UnknownComponent { + name: "nightly".to_owned(), + component: "clipy".to_owned(), + suggestion: Some("clippy".to_owned()), + }, + ); +} |