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tests/unit/fakes/fakelib.bash

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+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright (C) 2026 Bryan Joshua Pedini
+
+# tests/unit/fakes/fakelib.bash - shared by the fake package-manager commands.
+# Every fake logs its invocation ("<name> <args...>") to $FAKE_LOG and keeps its mutable
+# state (holds, purged packages, ...) under $FAKE_DIR. Replayed outputs live in
+# tests/unit/data/<backend>/ and are copied from the samples recorded in discovery/*.md.
+# shellcheck shell=bash
+
+FAKE_NAME=${FAKE_AS:-${0##*/}}
+: "${FAKE_LOG:?FAKE_LOG not set}" "${FAKE_DIR:?FAKE_DIR not set}" "${FAKE_DATA:?FAKE_DATA not set}"
+
+fake_log() { printf '%s %s\n' "$FAKE_NAME" "$*" >>"$FAKE_LOG"; }
+
+# fake_rc VAR DEFAULT: exit code override from the environment (e.g. FAKE_APT_UPGRADE_RC=100)
+fake_rc() {
+	local v=${!1:-}
+	printf '%s' "${v:-$2}"
+}
+
+# fake_purged NAME: was NAME removed by an earlier fake purge in this test?
+fake_purged() { [[ -f $FAKE_DIR/purged ]] && grep -qxF -- "$1" "$FAKE_DIR/purged"; }
+fake_mark_purged() { printf '%s\n' "$@" >>"$FAKE_DIR/purged"; }