fn-error-context 0.2.1

An attribute macro to add context to errors from a function.
Documentation 
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#[test]
fn tests() {
    let tests = trybuild::TestCases::new();

    tests.pass("tests/simple.rs");
    tests.pass("tests/arg.rs");
    tests.pass("tests/arg_pattern.rs");
    tests.pass("tests/inherent.rs");
    tests.compile_fail("tests/missing_fmt.rs");
    tests.pass("tests/fmt_args.rs");
    tests.pass("tests/failure.rs");
    tests.pass("tests/non_copy_arg.rs");
    tests.pass("tests/non_copy_fmt_arg.rs");
    tests.pass("tests/as_ref.rs");
    tests.pass("tests/async_as_ref.rs");
    tests.compile_fail("tests/fmt_missing_arg.rs");
    tests.compile_fail("tests/fmt_unused_arg.rs");
    tests.pass("tests/fmt_named_arg.rs");
    tests.compile_fail("tests/async_without_return.rs");
    tests.compile_fail("tests/preserve_lint.rs");
    tests.pass("tests/async_borrowing.rs");
    tests.pass("tests/no_move.rs");
    tests.pass("tests/async_no_move.rs");
    tests.pass("tests/move.rs");
    tests.pass("tests/async_move.rs");
}