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# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
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#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
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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. =========


def test_pipefail_off_default(shell):
    assert shell.mirage("false | true; echo $?") == "0\n"


def test_pipefail_on_propagates_failure(shell):
    assert shell.mirage("set -o pipefail; false | true; echo $?") == "1\n"


def test_pipefail_zero_when_all_pass(shell):
    assert shell.mirage("set -o pipefail; true | true; echo $?") == "0\n"


def test_pipefail_disabled_via_plus_o(shell):
    assert shell.mirage("set -o pipefail; set +o pipefail; false | true; "
                        "echo $?") == "0\n"


def test_pipefail_rightmost_failure(shell):
    assert shell.mirage(
        "set -o pipefail; false | false | true; echo $?") == "1\n"