#!/usr/bin/env python3

# This differs from matrix-check in the following ways:
#   - it only tests one combination of features, as specified on the command line
#   - it doesn't have crate-specific hacks (or any knowledge of our workspace contents)
#     (but it does read some ad-hoc parseable comments from Cargo.toml's).
#   - it runs `cargo test`

import subprocess
import sys
import list_crates

def test_crate(c):
    for l in open(c.subdir + '/Cargo.toml'):

        # TODO do something more formal here
        #
        # We need this because some crates don't compile without a runtime selected.
        #
        # Ideally, if the crate doesn't compile without any features selected,
        # the manifest should have a `minimal` feature we can use, or something.
        if l.startswith('# @@ test-all-crates ignore'):
            print('''(
(((((((((( skipping %s ))))))))))
)''' % c.name, file=sys.stderr)
            return

    command_sh = 'p=$1; shift; set -x; $CARGO test -p $p "$@"';

    print(''':
:::::::::: %s ::::::::::
:''' % c.name, file=sys.stderr)

    # We run a separate build command for each one, to defeat cargo feature unification.

    command_l = [
        'sh', '-ec', ': "${CARGO:=cargo --locked}"; ' + command_sh, 'x', c.name,
    ] + sys.argv[1:];

    child = subprocess.run(command_l)

    if child.returncode != 0:
        print('''failed command %s
"return code" %s
failed to test crate %s''' % (repr(command_l), child.returncode, c.name),
              file=sys.stderr);
        sys.exit(1)

def main():
    for crate in list_crates.list_crates():
        test_crate(crate)


main()