diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/tools/compiletest/src/runtest.rs | 15 | ||||
| -rw-r--r-- | src/tools/run-make-support/src/diff/mod.rs | 40 |
2 files changed, 31 insertions, 24 deletions
diff --git a/src/tools/compiletest/src/runtest.rs b/src/tools/compiletest/src/runtest.rs index ce6569f5537..59fce44d1c7 100644 --- a/src/tools/compiletest/src/runtest.rs +++ b/src/tools/compiletest/src/runtest.rs @@ -3735,15 +3735,14 @@ impl<'test> TestCx<'test> { } if self.config.bless { - cmd.env("RUSTC_BLESS_TEST", "--bless"); - // Assume this option is active if the environment variable is "defined", with _any_ value. - // As an example, a `Makefile` can use this option by: + // If we're running in `--bless` mode, set an environment variable to tell + // `run_make_support` to bless snapshot files instead of checking them. // - // ifdef RUSTC_BLESS_TEST - // cp "$(TMPDIR)"/actual_something.ext expected_something.ext - // else - // $(DIFF) expected_something.ext "$(TMPDIR)"/actual_something.ext - // endif + // The value is this test's source directory, because the support code + // will need that path in order to bless the _original_ snapshot files, + // not the copies in `rmake_out`. + // (See <https://github.com/rust-lang/rust/issues/129038>.) + cmd.env("RUSTC_BLESS_TEST", &self.testpaths.file); } if self.config.target.contains("msvc") && !self.config.cc.is_empty() { diff --git a/src/tools/run-make-support/src/diff/mod.rs b/src/tools/run-make-support/src/diff/mod.rs index b0ed4d5445c..ee48e373366 100644 --- a/src/tools/run-make-support/src/diff/mod.rs +++ b/src/tools/run-make-support/src/diff/mod.rs @@ -112,14 +112,8 @@ impl Diff { let (expected_name, actual_name, output, actual) = self.run_common(); if !output.is_empty() { - // If we can bless (meaning we have a file to write into and the `RUSTC_BLESS_TEST` - // environment variable set), then we write into the file and return. - if let Some(ref expected_file) = self.expected_file { - if std::env::var("RUSTC_BLESS_TEST").is_ok() { - println!("Blessing `{}`", expected_file.display()); - fs::write(expected_file, actual); - return; - } + if self.maybe_bless_expected_file(&actual) { + return; } panic!( "test failed: `{}` is different from `{}`\n\n{}", @@ -134,14 +128,8 @@ impl Diff { let (expected_name, actual_name, output, actual) = self.run_common(); if output.is_empty() { - // If we can bless (meaning we have a file to write into and the `RUSTC_BLESS_TEST` - // environment variable set), then we write into the file and return. - if let Some(ref expected_file) = self.expected_file { - if std::env::var("RUSTC_BLESS_TEST").is_ok() { - println!("Blessing `{}`", expected_file.display()); - fs::write(expected_file, actual); - return; - } + if self.maybe_bless_expected_file(&actual) { + return; } panic!( "test failed: `{}` is not different from `{}`\n\n{}", @@ -149,4 +137,24 @@ impl Diff { ) } } + + /// If we have an expected file to write into, and `RUSTC_BLESS_TEST` is + /// set, then write the actual output into the file and return `true`. + /// + /// We assume that `RUSTC_BLESS_TEST` contains the path to the original test's + /// source directory. That lets us bless the original snapshot file in the + /// source tree, not the copy in `rmake_out` that we would normally use. + fn maybe_bless_expected_file(&self, actual: &str) -> bool { + let Some(ref expected_file) = self.expected_file else { + return false; + }; + let Ok(bless_dir) = std::env::var("RUSTC_BLESS_TEST") else { + return false; + }; + + let bless_file = Path::new(&bless_dir).join(expected_file); + println!("Blessing `{}`", bless_file.display()); + fs::write(bless_file, actual); + true + } } |