Vendor things

third-party/vendor/zerocopy/tests/trybuild.rs

@@ -0,0 +1,41 @@
+// Copyright 2019 The Fuchsia Authors
+//
+// Licensed under a BSD-style license <LICENSE-BSD>, Apache License, Version 2.0
+// <LICENSE-APACHE or https://www.apache.org/licenses/LICENSE-2.0>, or the MIT
+// license <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your option.
+// This file may not be copied, modified, or distributed except according to
+// those terms.
+
+use testutil::ToolchainVersion;
+
+#[test]
+#[cfg_attr(miri, ignore)]
+fn ui() {
+    let version = ToolchainVersion::extract_from_pwd().unwrap();
+    // See the doc comment on this method for an explanation of what this does
+    // and why we store source files in different directories.
+    let source_files_dirname = version.get_ui_source_files_dirname_and_maybe_print_warning();
+
+    let t = trybuild::TestCases::new();
+    t.compile_fail(format!("tests/{source_files_dirname}/*.rs"));
+}
+
+// The file `invalid-impls.rs` directly includes `src/macros.rs` in order to
+// test the `impl_or_verify!` macro which is defined in that file. Specifically,
+// it tests the verification portion of that macro, which is enabled when
+// `cfg(any(feature = "derive", test))`. While `--cfg test` is of course passed
+// to the code in the file you're reading right now, `trybuild` does not pass
+// `--cfg test` when it invokes Cargo. As a result, this `trybuild` test only
+// tests the correct behavior when the "derive" feature is enabled.
+#[cfg(feature = "derive")]
+#[test]
+#[cfg_attr(miri, ignore)]
+fn ui_invalid_impls() {
+    let version = ToolchainVersion::extract_from_pwd().unwrap();
+    // See the doc comment on this method for an explanation of what this does
+    // and why we store source files in different directories.
+    let source_files_dirname = version.get_ui_source_files_dirname_and_maybe_print_warning();
+
+    let t = trybuild::TestCases::new();
+    t.compile_fail(format!("tests/{source_files_dirname}/invalid-impls/*.rs"));
+}