io.rs str_reader shenanigans

io.rs

...

// GIVEN THIS CHANGE IN libcore/io.rs

fn str_reader(+ss: ~str) -> Reader {
    bytes_reader(str::bytes(ss))
}

...

// THE FOLLOWING TESTS FAIL AND I DON'T YET KNOW WHY

    #[test]
    fn test_readchars_wide() {
        let wide_test = ~"生锈的汤匙切肉汤hello生锈的汤匙切肉汤";
        let ivals : ~[int] = ~[
            29983, 38152, 30340, 27748,
            21273, 20999, 32905, 27748,
            104, 101, 108, 108, 111,
            29983, 38152, 30340, 27748,
            21273, 20999, 32905, 27748];
        fn check_read_ln(len : uint, +ss: ~str, ivals: ~[int]) {
            let inp : io::Reader = io::str_reader(ss);
            let res : ~[char] = inp.read_chars(len);
            if (len <= vec::len(ivals)) {
                assert(vec::len(res) == len);
            }
            assert(vec::slice(ivals, 0u, vec::len(res)) ==
                   vec::map(res, |x| x as int));
        }
        let mut i = 0u;
        while i < 8u {
            check_read_ln(i, wide_test, ivals);
            i += 1u;
        }
        // check a long read for good measure
        check_read_ln(128u, wide_test, ivals);
    }

    #[test]
    fn test_readchar() {
        let inp : io::Reader = io::str_reader(~"生");
        let res : char = inp.read_char();
        assert(res as int == 29983);
    }
...

log

kunix:rust $ CFG_DISABLE_VALGRIND=1 make check TESTNAME=io::tests::test_readchar
cfg: shell host triple x86_64-unknown-linux-gnu
cfg: host for x86_64-unknown-linux-gnu is x86_64
cfg: unix-y environment
cfg: using gcc
cfg: disabling valgrind (CFG_DISABLE_VALGRIND)
cfg: no llnextgen found, omitting grammar-verification
cfg: including dist rules
cfg: including test rules
check: formatting
compile_and_link: x86_64-unknown-linux-gnu/stage0/lib/rustc/x86_64-unknown-linux-gnu/lib/libcore.so
compile_and_link: x86_64-unknown-linux-gnu/stage0/lib/rustc/x86_64-unknown-linux-gnu/lib/libstd.so
compile_and_link: x86_64-unknown-linux-gnu/stage0/lib/rustc/x86_64-unknown-linux-gnu/lib/libsyntax.so
compile_and_link: x86_64-unknown-linux-gnu/stage0/lib/rustc/x86_64-unknown-linux-gnu/lib/librustc.so
compile_and_link: x86_64-unknown-linux-gnu/stage0/lib/rustc/x86_64-unknown-linux-gnu/bin/rustc
cp: x86_64-unknown-linux-gnu/stage1/lib/libcore.so
cp: x86_64-unknown-linux-gnu/stage1/lib/libstd.so
cp: x86_64-unknown-linux-gnu/stage1/lib/libsyntax.so
cp: x86_64-unknown-linux-gnu/stage1/lib/librustc.so
cp: x86_64-unknown-linux-gnu/stage1/bin/rustc
compile_and_link: x86_64-unknown-linux-gnu/stage1/lib/rustc/x86_64-unknown-linux-gnu/lib/libcore.so
compile_and_link: x86_64-unknown-linux-gnu/stage1/lib/rustc/x86_64-unknown-linux-gnu/lib/libstd.so
compile_and_link: x86_64-unknown-linux-gnu/stage1/lib/rustc/x86_64-unknown-linux-gnu/lib/libsyntax.so
compile_and_link: x86_64-unknown-linux-gnu/stage1/lib/rustc/x86_64-unknown-linux-gnu/lib/librustc.so
compile_and_link: x86_64-unknown-linux-gnu/stage1/lib/rustc/x86_64-unknown-linux-gnu/bin/rustc
cp: x86_64-unknown-linux-gnu/stage2/lib/libcore.so
cp: x86_64-unknown-linux-gnu/stage2/lib/libstd.so
cp: x86_64-unknown-linux-gnu/stage2/lib/libsyntax.so
cp: x86_64-unknown-linux-gnu/stage2/lib/librustc.so
cp: x86_64-unknown-linux-gnu/stage2/bin/rustc
compile_and_link: x86_64-unknown-linux-gnu/stage2/lib/rustc/x86_64-unknown-linux-gnu/lib/libcore.so
compile_and_link: x86_64-unknown-linux-gnu/stage2/lib/rustc/x86_64-unknown-linux-gnu/lib/libstd.so
compile_and_link: x86_64-unknown-linux-gnu/stage2/lib/rustc/x86_64-unknown-linux-gnu/lib/libsyntax.so
compile_and_link: x86_64-unknown-linux-gnu/stage2/lib/rustc/x86_64-unknown-linux-gnu/lib/librustc.so
compile_and_link: x86_64-unknown-linux-gnu/stage1/lib/rustc/x86_64-unknown-linux-gnu/bin/rustdoc
cp: x86_64-unknown-linux-gnu/stage2/bin/rustdoc
rustdoc: doc/core/index.html
rustdoc: doc/std/index.html
compile_and_link: x86_64-unknown-linux-gnu/stage1/lib/rustc/x86_64-unknown-linux-gnu/bin/fuzzer
cp: x86_64-unknown-linux-gnu/stage2/bin/fuzzer
compile_and_link: x86_64-unknown-linux-gnu/stage1/lib/rustc/x86_64-unknown-linux-gnu/bin/cargo
cp: x86_64-unknown-linux-gnu/stage2/bin/cargo
compile_and_link: x86_64-unknown-linux-gnu/test/rustctest.stage2-x86_64-unknown-linux-gnu
run: x86_64-unknown-linux-gnu/test/rustctest.stage2-x86_64-unknown-linux-gnu

running 0 tests

result: ok. 0 passed; 0 failed; 0 ignored

compile_and_link: x86_64-unknown-linux-gnu/test/coretest.stage2-x86_64-unknown-linux-gnu
run: x86_64-unknown-linux-gnu/test/coretest.stage2-x86_64-unknown-linux-gnu

running 4 tests
rust: task failed at 'Assertion vec::len(res) == len failed', /code/rust/src/libcore/io.rs:874
rust: task failed at 'Assertion res as int == 29983 failed', /code/rust/src/libcore/io.rs:892
test io::tests::test_readchar_empty ... ok
test io::tests::test_readchars_empty ... ok
test io::tests::test_readchars_wide ... FAILED
test io::tests::test_readchar ... FAILED

failures:
    io::tests::test_readchar
    io::tests::test_readchars_wide

result: FAILED. 2 passed; 2 failed; 0 ignored

rust: task failed at 'Some tests failed', /code/rust/src/libstd/test.rs:60
rust: domain main @0x192fb80 root task failed
rust: task failed at 'killed', /code/rust/src/libcore/task.rs:549
make: *** [check-stage2-T-x86_64-unknown-linux-gnu-H-x86_64-unknown-linux-gnu-core-dummy] Error 101
kunix:rust $