zuzu-rust 0.2.0

Rust implementation of ZuzuScript
Documentation 
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from test/more import *;

requires_capability( "fs" );

from std/io import Path;

let file := Path.tempfile();
let raw := ~to_binary("ABC");
file.spew(raw);
is( typeof file.slurp(), "BinaryString", "raw slurp returns BinaryString", );
ok( file.slurp() == raw, "raw slurp roundtrip keeps non-UTF8 bytes", );
file.spew_utf8("naïve café");
is( typeof file.slurp_utf8(), "String", "utf8 slurp returns String", );
is( file.slurp_utf8(), "naïve café", "utf8 slurp preserves multibyte text", );
like( exception( function() {
	let bad := "head" _ raw;
}
), /Cannot implicitly concatenate non-ASCII BinaryString/, "migration guard: explicit conversion required",
    );
let ascii := to_binary("A");
is( "head" _ to_string(ascii), "headA", "migration path: explicit to_string unblocks concat", );
done_testing();