rs_bindings_from_cc/test/namespace/inline/test.rs

// Part of the Crubit project, under the Apache License v2.0 with LLVM
// Exceptions. See /LICENSE for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception

#[cfg(test)]
mod tests {
    use inline::*;

    #[test]
    fn test_inline_namespaces() {
        let s = foo::inline1::MyStruct { value: 123 };
        assert_eq!(123, foo::inline1::GetStructValue1(&s));
        assert_eq!(123, foo::inline1::GetStructValue2(&s));
        assert_eq!(123, foo::inline1::GetStructValue3(&s));
        assert_eq!(123, foo::inline1::GetStructValue4(&s));

        // Notably, the C++ standard library uses `inline` namespaces, but we
        // still want to be able to refer to `std::string`, rather than
        // `std::__u::string`. Therefore the test verifies that the
        // inner types and functions are also available in the parent
        // namespace.
        // `foo::MyStruct` should be a type alias for
        // `foo::inline1::MyStruct`.
        #[allow(unused_assignments)]
        let mut s2 = foo::MyStruct { value: 456 };
        s2 = s; // these are literally the same type.
        // The functions should be available as `foo::GetStructValue...`
        // as well.
        assert_eq!(123, foo::GetStructValue1(&s2));
        assert_eq!(123, foo::GetStructValue2(&s2));
        assert_eq!(123, foo::GetStructValue3(&s2));
        assert_eq!(123, foo::GetStructValue4(&s2));
    }
}