79 lines
2.3 KiB
Rust
79 lines
2.3 KiB
Rust
// run-pass
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// Test StableMIR behavior when different results are given
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// ignore-stage1
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// ignore-cross-compile
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// ignore-remote
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// edition: 2021
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#![feature(rustc_private)]
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#![feature(assert_matches)]
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extern crate rustc_middle;
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extern crate rustc_smir;
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extern crate stable_mir;
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use rustc_middle::ty::TyCtxt;
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use rustc_smir::rustc_internal;
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use std::io::Write;
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use std::ops::ControlFlow;
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/// This test will generate and analyze a dummy crate using the stable mir.
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/// For that, it will first write the dummy crate into a file.
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/// Then it will create a `StableMir` using custom arguments and then
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/// it will run the compiler.
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fn main() {
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let path = "input_compilation_result_test.rs";
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generate_input(&path).unwrap();
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let args = vec!["rustc".to_string(), path.to_string()];
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test_continue(args.clone());
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test_break(args.clone());
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test_failed(args.clone());
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test_skipped(args);
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}
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fn test_continue(args: Vec<String>) {
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let continue_fn = |_: TyCtxt| ControlFlow::Continue::<(), bool>(true);
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let result = rustc_internal::StableMir::new(args, continue_fn).run();
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assert_eq!(result, Ok(true));
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}
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fn test_break(args: Vec<String>) {
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let continue_fn = |_: TyCtxt| ControlFlow::Break::<bool, i32>(false);
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let result = rustc_internal::StableMir::new(args, continue_fn).run();
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assert_eq!(result, Err(stable_mir::CompilerError::Interrupted(false)));
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}
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fn test_skipped(mut args: Vec<String>) {
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args.push("--version".to_string());
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let unreach_fn = |_: TyCtxt| -> ControlFlow<()> { unreachable!() };
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let result = rustc_internal::StableMir::new(args, unreach_fn).run();
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assert_eq!(result, Err(stable_mir::CompilerError::Skipped));
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}
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fn test_failed(mut args: Vec<String>) {
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args.push("--cfg=broken".to_string());
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let unreach_fn = |_: TyCtxt| -> ControlFlow<()> { unreachable!() };
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let result = rustc_internal::StableMir::new(args, unreach_fn).run();
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assert_eq!(result, Err(stable_mir::CompilerError::CompilationFailed));
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}
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fn generate_input(path: &str) -> std::io::Result<()> {
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let mut file = std::fs::File::create(path)?;
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write!(
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file,
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r#"
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// This should trigger a compilation failure when enabled.
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#[cfg(broken)]
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mod broken_mod {{
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fn call_invalid() {{
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invalid_fn();
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}}
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}}
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fn main() {{}}
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"#
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)?;
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Ok(())
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}
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