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# Licensed under the Apache License, Version 2.0 (the "License");
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#
#     http://www.apache.org/licenses/LICENSE-2.0
#
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# See the License for the specific language governing permissions and
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# ========= Copyright 2026 @ Strukto.AI All Rights Reserved. =========

import pytest

CASES = [
    ('X=hi; echo "${X:-fallback}"', "hi\n"),
    ('echo "${UNSET:-fallback}"', "fallback\n"),
    ('X=""; echo "${X:-fallback}"', "fallback\n"),
    ('X=""; echo "${X-fallback}"', "\n"),
    ('echo "${UNSET-fallback}"', "fallback\n"),
    ('X=hi; echo "${X:+yes}"', "yes\n"),
    ('echo "${UNSET:+yes}"', "\n"),
    ('X=""; echo "${X:+yes}"', "\n"),
    ('X=""; echo "${X+yes}"', "yes\n"),
    ('X=hello; echo "${#X}"', "5\n"),
    ('X=""; echo "${#X}"', "0\n"),
    ('X=hello; echo "${X:1:3}"', "ell\n"),
    ('X=hello; echo "${X:1}"', "ello\n"),
    ('X=hello; echo "${X: -3}"', "llo\n"),
    ('X=foobar; echo "${X#foo}"', "bar\n"),
    ('X=foobar; echo "${X%bar}"', "foo\n"),
    ('X=a/b/c/d; echo "${X##*/}"', "d\n"),
    ('X=a/b/c/d; echo "${X%%/*}"', "a\n"),
    ('X=a/b/c/d; echo "${X#*/}"', "b/c/d\n"),
    ('X=a/b/c/d; echo "${X%/*}"', "a/b/c\n"),
    ('X=foobarfoo; echo "${X/foo/baz}"', "bazbarfoo\n"),
    ('X=foobarfoo; echo "${X//foo/baz}"', "bazbarbaz\n"),
    ('X=foobar; echo "${X/foo/}"', "bar\n"),
    ('X=hello; echo "${X^^}"', "HELLO\n"),
    ('X=HELLO; echo "${X,,}"', "hello\n"),
    ('X=hello; echo "${X^}"', "Hello\n"),
    ('X=HELLO; echo "${X,}"', "hELLO\n"),
    ('X=hello; Y=X; echo "${!Y}"', "hello\n"),
]


@pytest.mark.parametrize("cmd,expected", CASES)
def test_param_expansion(shell, cmd, expected):
    assert shell.mirage(cmd) == expected